Cameron NUFLO MC-III EXP User manual

NUFLOTM
MC-III™ EXP
Flow Analyzer
User Manual
Manual No. 9A-50165003, Rev. 06
Valves & Measurement

Important Safety Information
Symbols and Terms Used in this Manual
!WARNING: This symbol identies information about practices or circumstances that can lead to per-
sonal injury or death, property damage, or economic loss.
CAUTION: Indicates actions or procedures which if not performed correctly may lead to personal
injury or incorrect function of the instrument or connected equipment.
Important: Indicates actions or procedures which may affect instrument operation or may lead to an
instrument response which is not planned.
Symbols Marked on Equipment
Attention! Refer to manual Protective (earth) ground
Technical Support Contact Information
TEL: [phone]
EMAIL: [email protected]
WEB: https://sensiaglobal.com/Measurement
Other company, product, and service names are the properties of their respective owners.
Copyright © 2020 Sensia LLC. All rights reserved.
Manual No. 9A-50165003, Rev. 06
August 2020

iii
MC-III™ EXP Flow Analyzer Table of Contents
Contents
Important Safety Information ...............................................................................................................................ii
Section 1—Introduction................................................................................................................................... 1
Operation ............................................................................................................................................................ 1
Product Identication .......................................................................................................................................... 2
Key Product Features ........................................................................................................................................ 5
LCD Display ................................................................................................................................................. 5
Keypad ......................................................................................................................................................... 6
Interface Software ........................................................................................................................................ 6
Power Supply—CSA-Approved Units .......................................................................................................... 7
Power Supply—ATEX-Approved Units ........................................................................................................ 7
Multipoint Linearization ................................................................................................................................ 8
Gas Volume Correction ................................................................................................................................ 8
Input Options ................................................................................................................................................ 8
Output Options ............................................................................................................................................. 8
Flow Log Archival ........................................................................................................................................ 8
Event Log Archival ...................................................................................................................................... 8
Password-Protected Security ....................................................................................................................... 8
Optional Features ............................................................................................................................................... 9
Explosion-Proof Reset/Control Switch ......................................................................................................... 9
RS-485 Communications Adapter ................................................................................................................ 9
USB Communications Adapter (CSA-Approved Units Only) ....................................................................... 9
RS-485 IS Barrier (CSA-Approved Units Only) .......................................................................................... 10
Commonly Used Functions .............................................................................................................................. 10
Reading Totals ........................................................................................................................................... 10
Saving Totals to Memory ............................................................................................................................ 10
Resetting the Total ..................................................................................................................................... 10
Viewing Daily and Hourly Logs ...................................................................................................................11
Saving and Uploading Conguration Files ..................................................................................................11
Exporting Log Data .....................................................................................................................................11
Saving Log Data in a Report .......................................................................................................................11
Section 2—Installation................................................................................................................................... 13
Hazardous Area Installations (ATEX) ............................................................................................................... 13
Conditions for Safe Use (ATEX)................................................................................................................. 14
Mounting Options (ATEX) .......................................................................................................................... 15
Hazardous Area Installations (CSA) ................................................................................................................. 17
Conditions for Safe Use (CSA) .................................................................................................................. 17
Mounting Options (CSA) ............................................................................................................................ 17
Installing the MC-III EXP .................................................................................................................................. 19
Field Wiring....................................................................................................................................................... 20
Internal Power Supply ................................................................................................................................ 21
External Power Supply ............................................................................................................................... 21
Turbine Flowmeter (TFM) Input ................................................................................................................. 22
Pulse Input ................................................................................................................................................. 22
Remote Reset Input ................................................................................................................................... 23
Pulse Output ............................................................................................................................................. 24
Analog (4-20 mA) Rate Output ................................................................................................................. 25
Flowmeter Frequency Output .................................................................................................................... 26
RS-485 Output ........................................................................................................................................... 27

iv
Table of Contents MC-III™ EXP Flow Analyzer
Section 3—Conguration and Operation via Keypad................................................................................. 29
Entering a Calibration Factor ........................................................................................................................... 30
Entering a Calculated Divisor ........................................................................................................................... 31
Setting Input Type and Sensitivity .................................................................................................................... 32
Conguring the Total Display ............................................................................................................................ 33
Conguring the Rate Display ............................................................................................................................ 34
Conguring the 4-20 mA Rate Output .............................................................................................................. 35
Conguring the Pulse Output ........................................................................................................................... 37
Entering the Slave Address .............................................................................................................................. 38
Entering the Baud Rate .................................................................................................................................... 38
Section 4—Conguration and Operation via Software............................................................................... 39
Installing the Software ...................................................................................................................................... 39
User Documentation .................................................................................................................................. 39
Connecting the MC-III to a Computer ............................................................................................................... 40
Running the Software ....................................................................................................................................... 40
Automating Functions on Software Startup ............................................................................................... 41
Changing Autorun Settings ........................................................................................................................ 42
Express Connect Option ............................................................................................................................ 42
Changing the Communications Port .......................................................................................................... 43
Software Connection in Multi-Device Network ........................................................................................... 43
Setting Log Download Preferences .................................................................................................................. 45
Conguring the MC-III EXP .............................................................................................................................. 46
Conguration Wizard ................................................................................................................................. 48
MC-III Main Screen .................................................................................................................................... 50
Buttons and Tools....................................................................................................................................... 51
System Setup ................................................................................................................................................... 54
Time/Date Synchronization ....................................................................................................................... 54
Contract Hour ............................................................................................................................................. 54
LCD Contrast Adjustment .......................................................................................................................... 54
Security Setup ............................................................................................................................................ 55
Firmware Version Number ......................................................................................................................... 55
Serial Number ............................................................................................................................................ 55
Communications Port ....................................................................................................................................... 55
Slave Address ............................................................................................................................................ 55
Baud Rate ................................................................................................................................................. 56
Bus Delay ................................................................................................................................................... 57
Bus Timeout ............................................................................................................................................... 57
Software Communication Options ............................................................................................................. 57
Wellsite Information .......................................................................................................................................... 57
Turbine Input .................................................................................................................................................... 58
Volume Display .......................................................................................................................................... 58
Rate Display ............................................................................................................................................... 59
Input Type and Sensitivity Conguration .................................................................................................... 59
Cut-Off Thresholds ..................................................................................................................................... 59
Calculation Period ...................................................................................................................................... 59
K-Factor Entry .................................................................................................................................................. 60
K-Factor Units ............................................................................................................................................ 60
K-Factor Type............................................................................................................................................. 60
K-Factor Backup ........................................................................................................................................ 61
Gas Volume Correction (Supercompressibility Calculation) ...................................................................... 62
4-20 mA Output ................................................................................................................................................ 64
Enabling 4-20 mA Output .......................................................................................................................... 65
4-20 mA Output Testing.............................................................................................................................. 65

v
MC-III™ EXP Flow Analyzer Table of Contents
Pulse Output ..................................................................................................................................................... 67
Conguring Pulse Output ........................................................................................................................... 67
Pulse Output Testing .................................................................................................................................. 68
Saving and Uploading Conguration Files ....................................................................................................... 69
Saving a Conguration File ........................................................................................................................ 69
Uploading a Conguration File ................................................................................................................... 70
Advanced Access ............................................................................................................................................ 72
Section 5—Flow Logs and Event Logs ........................................................................................................ 73
Auto-Save Log Formats.................................................................................................................................... 73
Log Directory and Filenames............................................................................................................................ 74
Flow Archive ..................................................................................................................................................... 74
Downloading Flow Logs ............................................................................................................................. 75
Viewing Trend Charts ................................................................................................................................. 76
Printing/Saving a Report ............................................................................................................................ 77
Viewing a Saved Report............................................................................................................................. 79
Exporting Flow Logs ................................................................................................................................. 80
Event Archive.................................................................................................................................................... 81
Downloading Event Logs ........................................................................................................................... 82
Printing/Saving a Report ............................................................................................................................ 83
Exporting Event Logs ................................................................................................................................ 83
Section 6 - MC-III EXP Maintenance.............................................................................................................. 85
Lithium Battery Replacement ........................................................................................................................... 85
Alkaline Battery Replacement .......................................................................................................................... 87
Circuit Assembly Replacement ......................................................................................................................... 89
Keypad Replacement ....................................................................................................................................... 91
Firmware Update .............................................................................................................................................. 92
MC-III Parts List (CSA) ..................................................................................................................................... 93
MC-III Parts List (ATEX) ................................................................................................................................... 94
Appendix A—MC-III EXP Hardware Options...............................................................................................A-1
Explosion-Proof Reset/Control Switch.............................................................................................................A-1
Installation .................................................................................................................................................A-1
Operation ..................................................................................................................................................A-2
Explosion-Proof Communications Adapter ......................................................................................................A-3
Assembly of the Plug Connector ...............................................................................................................A-3
Connecting to the Communications Adapter .............................................................................................A-4
Disconnecting the Communications Adapter ...........................................................................................A-5
Installation of Adapter (when purchased separately from an MC-III EXP) ................................................A-5
USB Communications Adapter ........................................................................................................................A-6
User-Supplied Hardware ...........................................................................................................................A-7
Using the Adapter .....................................................................................................................................A-7
Covering the Adapter ................................................................................................................................A-7
Adapter Kit Installation ..............................................................................................................................A-7
Appendix B—Software Program Options ...................................................................................................B-1
General Options ..............................................................................................................................................B-1
Autorun Options...............................................................................................................................................B-2
Communications Options ................................................................................................................................B-3
Express Connect Option ...........................................................................................................................B-4
Auto-Negotiate Option ..............................................................................................................................B-4
Enable Auto-Negotiated Baud Rate Option ..............................................................................................B-4

vi
Table of Contents MC-III™ EXP Flow Analyzer
Toggle RTS Line Option ............................................................................................................................B-4
Enable Modbus Address Support for Firmware Versions 1.06 through 1.08 ............................................B-4
Timing Parameters ....................................................................................................................................B-4
Downloading Options ......................................................................................................................................B-5
Advanced Options ...........................................................................................................................................B-6
Clear EEPROM .........................................................................................................................................B-6
Automatic Data Logging ............................................................................................................................B-6
Appendix C—Lithium Battery Information..................................................................................................C-1
Lithium Battery Disposal .................................................................................................................................C-1
Transportation Information ..............................................................................................................................C-1
Material Safety Data Sheet..............................................................................................................................C-1
Appendix D—Communications Protocol....................................................................................................D-1
Introduction ......................................................................................................................................................D-1
Supported Commands.....................................................................................................................................D-1
Data Types ......................................................................................................................................................D-1
Registers ........................................................................................................................................................D-2
System Conguration ................................................................................................................................D-3
Product Code (register 1000) ....................................................................................................................D-4
Firmware/Register Table Version Numbers (registers 1001, 1002) ..........................................................D-4
Manufacture Date/Sales Date (registers 1003, 1004) ...............................................................................D-4
Slave Address (register 1009) ...................................................................................................................D-4
Baud Rate (register 1010) .........................................................................................................................D-4
Real Time ..................................................................................................................................................D-5
Input Conguration ....................................................................................................................................D-5
Output Conguration .................................................................................................................................D-8
Holding Registers (16-bit Mode) ...............................................................................................................D-9
Holding Registers (16-bit Mode)—Least Signicant Word First ..............................................................D-11
Base Units/Congured Units ...................................................................................................................D-11
Conversion Factors .................................................................................................................................D-11
Polling Registers .....................................................................................................................................D-12
Pointer/Daily/Event Pointer (registers 17001 through 17006) .................................................................D-12
Real Date (registers 17007, 17008) ........................................................................................................D-12
Real Time (registers 17009, 17010) ........................................................................................................D-12
Totals ......................................................................................................................................................D-12
Pulse Output Pulses (register 17077) .....................................................................................................D-12
Analog Output Current (register 17079) ..................................................................................................D-12
Calculated K-Factor (register 17081) ......................................................................................................D-12
Control Register ......................................................................................................................................D-15
Wellsite Parameters ................................................................................................................................D-15
Log Data ........................................................................................................................................................D-15
Enron Registers ......................................................................................................................................D-16
Enron Hourly/Daily Record Format .........................................................................................................D-16
Enron Event Record Format ...................................................................................................................D-17
Reset Status ...........................................................................................................................................D-17
Log Capacity ...........................................................................................................................................D-17

1
MC-III™ EXP Flow Analyzer Section 1
Section 1—Introduction
The NuFlo™ MC-III™ EXP FlowAnalyzer (Figure 1.1) packs a full spectrum of gas and liquid measurement
functionality, high-speed performance, and log archive and retrieval capabilities in an easy-to-use, explosion-
proof totalizer. Commonly used operations can be accessed from the six-button keypad on the front of the
instrument or from the dynamic interface software, allowing you to calibrate and congure the unit quickly
and easily.
When the MC-III EXP is installed in accordance with the provisions in this manual (Section 2, page 13), it is
approved by CSAfor use in hazardous areas in Canada and the United States, and meets theATEX/IECEx
standards for use in hazardous areas worldwide.
Operation
The MC-III EXP calculates and displays instantaneous ow rates and accumulated totals based on a turbine
owmeter input signal. The MC-III’s microprocessor circuitry counts the pulses generated by a companion
owmeter, converts that data into volume and rate values in accordance with calibration settings, and displays
the totalized data on a two-line liquid crystal display (LCD). The eight-digit top readout indicates total ow
volume; the six-digit bottom readout indicates ow rate.
Figure 1.1—MC-III EXP ow analyzer (shown with CSA-approved pipe reducer/union, left, and the ATEX/
IECEx-approved tube adapter, right)

2
Section 1 MC-III™ EXP Flow Analyzer
With the press of a single key, totals are saved to nonvolatile memory, minimizing the risk of data loss even if
a power outage occurs.
Up to 384 daily logs, 768 hourly logs, and 345 event logs can be archived and accessed quickly on demand.
Offering a variety of user-congurable display options, input and output options, RS-485 Modbus®
compatibility, ow logging, and turbine owmeter linearization, the MC-III EXP is one of the most versatile
totalizers on the market. For specications, see Table 1.1, page 3.
An optional explosion-proof reset switch further expands the unit’s versatility, making it possible to reset the
total and view daily ow logs without opening the enclosure.
Product Identication
Each device is labeled with a serial tag that identies the product by part number and serial number and
identies the device’s input power requirements and safety classication. The CSA-approved device is
marked as shown in Figure 1.2. TheATEX-approved device is marked as shown in Figure 1.3.Adescription
of the electrical protection afforded by SIRA certication and associated safety markings are also shown in
Figure 1.3.
PART
SERIAL 167018
Figure 1.2—Serial tag for CSA-approved device
Equipment Group II, Category 2 (hazardous conditions
are likely to occur in normal operation occasionally (>10<1000 hours/year)
Explosive Atmosphere: Gas, Dust
Flameproof for explosive gas environments other than
mines; temperature class
CE marking and number of notied
body responsible for production
Explosion-proof marking
Certication numbers
Temperature tested for dust and suitable for use in
Zone 21 area; ingress protection: dust-tight and protected against
the eects of low-pressure jets of water from all directions;
maximum surface temperature: 85°C
NUFLOTM MC-III EXP FLOW ANALYZER
PART
SERIAL
FOR INSTALLATION & OPERATION INFO,
SEE MANUAL PART NO. 9A-50165003.
WARNING: DO NOT OPEN WHEN
AN EXPLOSIVE ATMOSPHERE
MAY BE PRESENT.
II 2 GD
AAAA
Ex db IIC T6Gb (-40°C to 70°C) or
Ex tb IIIC T85°C Db (-40°C to 70°C)°
Sira 10ATEX1264X
IECEx SIR10.0127X
INPUT POWER: 6 to 30V @ 6 mA
LOCATION OF MANUFACTURER
Figure 1.3—Serial tag for ATEX-approved device

3
MC-III™ EXP Flow Analyzer Section 1
Table 1.1—MC-III EXP Specications
Electrical Safety
Classication
Approved by CSA for US and Canada
Class I, Div. 1, Groups B, C, D (explosion-proof)
Type 4 enclosure
T6 temperature class
Approved by SIRA to
ATEX 10ATEX 1264X
IECEx SIR10.0127X
E II 2 GD
Ex db IIC T6 Gb (-40°C to 70°C) or Ex tb IIIC T85°C Db (-40°C to 70°C)
System Power Internal power supply
• 3.6 VDC, D-size lithium battery (2-year typical life)
• Alkaline battery pack containing 3 C-size industrial-grade batteries (CSA
only)
External power supply (6 to 30 VDC) with internal battery backup (reverse
polarity protected)
Loop-powered (4-20 mA) with internal battery backup
(reverse polarity protected)
Loop power: 8 to 30 VDC
Load resistance: 1100 ohms @ 30 VDC; 200 ohms @ 12 VDC
Operating Temperature Lithium-Powered: -40°C to 70°C (-40°F to 158°F)
Alkaline-Powered (CSA only): -18°C to 55°C (0°F to 130°F)
LCD contrast is reduced below -20°C (-4°F)
LCD Display 8-digit Total (volume) display (7-segment characters)
6-digit Rate display (11-segment characters for easy-to-read prompts)
0.3” character height
Adjustable contrast and update period
User-selectable units of measurement (Total):
• Preprogrammed units: BBL, GAL, LIT, M3, CF, SCF, any unit x 1000
• User-dened units
User-selectable units of measurement (Rate):
• Preprogrammed units: BBL, GAL, LIT, M3, CF, SCF (per DAY, HR,
MIN, SEC), any unit x 1000 (per DAY, HR, MIN, SEC)
• User-dened units
Keypad 6-key membrane switch
Communications/
Archive Retrieval RS-485 Modbus® communications with transfer speeds up to 115.2K (allows
full download in less than 1 minute)
Logging 384 daily logs
768 hourly logs
345 event logs

4
Section 1 MC-III™ EXP Flow Analyzer
Table 1.1—MC-III EXP Specications
Inputs Turbine Meter Input
Congurable sensitivity adjustment via front panel
Sensitivity adjustment range: 20 mV P-P to 40 mV P-P
Frequency range: 0 to 3500 Hz
Remote Reset Input
Optically isolated
3.0 to 30 VDC
Pulse duration > 3 seconds to reset
Explosion-Proof Reset Switch (option)
Press and hold > 3 seconds, then release to reset total
Press and hold < 1 second, then release to view daily log data
Pulse Input
Optically isolated
3.0 to 30 VDC
Frequency range: 0 to 3500 Hz
Outputs Analog Output
4-20 mA, loop-powered (two-wire)
16-bit resolution
Accuracy: 0.1% of full scale @ 25°C, 50 PPM/°C temperature drift
Loop power: 8.0 to 30 VDC
Zero and full-scale engineering values congurable from front panel
RS-485 Communications
Baud rates: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600 and up
to 115.2K
Volumetric Pulse Output
Solid-state relay
Output rating: 60 mA max. @ 30 VDC, on-state drop = 1.4 VDC @ 50 mA,
0.25 VDC @ 10 mA
Congurable pulse width (duration): 10 to 60,000 ms
Amp & Square (Flowmeter Frequency) Output
Open-drain transistor output of turbine meter input signal
Output rating: 50 mA @ 30 VDC, on-state drop = 0.3 VDC @ 50 mA,
0.1 VDC @ 10 mA
(Analog output and amp & square outputs cannot be used simultaneously.)
Modbus®RTU mode Modbus® supports 16-bit and 32-bit holding registers. For more
information, see Appendix D, page D-1.
Enron Modbus®Flow log parameters (time stamp, period total, period run time, and supply
voltage) and download method are Enron-compatible.

5
MC-III™ EXP Flow Analyzer Section 1
Table 1.1—MC-III EXP Specications
System Requirements Operating System - Windows XP, Windows Vista®, or Windows 7
Computer/Processor - 1 GHz or faster Pentium-compatible CPU
Memory - 128 MB of RAM
Hard Disk Space - 21 MB for program les, 30 MB for Adobe Reader,
adequate space for data les
Drive - CD-ROM for install
Display - 800 x 600 (SVGA), 16-bit (thousands of colors) color display or
greater
Browser - Internet Explorer 6 or later
Internet Connection - for web links, tech support
Communications Port - physical or virtual RS-232 compatible serial port
Key Product Features
This section presents an overview of key features of the MC-III EXP. Many of these features are discussed in
moredetailinSection3, page30,and Section4, page41(conguration procedures) and Section5,page 76 (ow
log archival).
Key features discussed here include:
• LCD display
• keypad
• interface software
• power supply
• calibration options
• input options
• output options
• ow log archival
• password-protected security
LCD Display
The liquid crystal display (Figure 1.4, page 6) provides a simultaneous indication of accumulated total (top
readout) and ow rate (bottom readout). The eight-digit total display uses 7-segment characters to form
numbers and letters, which results in a combination of uppercase and lowercase letters. The six-digit ow rate
display uses 11-segment characters to form numbers and letters for improved readability. When the keypad
is used to calibrate the MC-III EXP, the name of the menu option selected appears in the lower (rate) display,
and settings are entered in the top (total) display.
Flow volume can be measured in barrels, gallons, liters, cubic meters, cubic feet, standard cubic feet or other
user-dened units. A multiplication factor is also available for indicating ow volume in terms of 1,000 units.
The unit of measure for the Total readout and the decimal point position are selected by the operator during
calibration. If a user-dened unit is used, none of the preprogrammed volume units will be visible on the
display during operation.
Flow rate can be measured in a wide variety of preprogrammed units, or other user-dened units. The ow
rate unit of measure is selected in two steps: (1) a volume unit is chosen and (2) a time-base unit (per day, per
hour, per minute, or per second) is chosen. Users can choose any combination of preprogrammed volume and
time units in establishing the ow rate engineering unit (for example, gallons per hour, gallons per day, or

6
Section 1 MC-III™ EXP Flow Analyzer
gallons per minute). Also, the volume unit used for the ow rate can be different from the volume unit used to
read Total volume. The unit of measure for the Rate readout and the decimal point position are selected by the
operator during calibration.
The daily index (Day) display is a two-digit number for selecting a daily archive log for viewing. The
number shown here represents the number of days that have passed since the log was saved. For example, an
entry of 01 would yield yesterday’s log. An entry of 05 would yield the log generated 5 days prior. Up to 99
consecutive daily logs can be viewed using the keypad. In addition, up to 384 daily logs, 768 hourly logs, and
345 event logs can be viewed through the interface software.
The LCD contrast can be adjusted with the interface software (see Section 4, page 41).
00000000
000000
M3
BBL
GAL
LIT
M3
BBL
GAL
LIT
/SEC
/MIN
/HR
/DAY
CF
CF
X1000
X1000
00
Day
Total
Rate
Figure 1.4—LCD display showing location of the Total, Rate, and daily index (Day) displays. Only the units of
measurement selected for displaying total and rate will be visible during normal operation.
Keypad
The six-button keypad allows users to perform a basic conguration of the instrument. Figure 1.5, page
7, summarizes the functions that can be accessed with each button. Most parameters can be congured in
seconds by selecting one of the three menu keys (K-Factor, Output, or Display), navigating settings with the
arrow buttons, and saving the selections with the Enter key.
Section 3, page 30,contains procedures for conguring the MC-III EXP using the keypad. Icons of the six
buttons provide a pictorial reference to help guide users through each step of conguration.
Important: Some conguration parameters are accessible only through the interface software. See
Section 4, page 41, for instructions on conguring the instrument using the software.
Interface Software
Developed within the familiar Windows environment, the MC-III interface software is an intuitive and
easy-to-use application that provides access to all controls for setting up and operating the instrument. The
interface tailors the controls to the user’s needs, providing three options for conguring the instrument:
• a “Conguration Wizard,” which steps through the most common conguration tasks
• individual conguration menus for accessing specic settings
• an advanced menu that gives host programmers access to Modbus®registers
For instructions on installing the interface software and entering conguration parameters via the interface
software, see Section 4, page 41.

7
MC-III™ EXP Flow Analyzer Section 1
LOG TEST SAVE
ENTER
K-FACTOR
MENU
OUTPUT
MENU
DISPLAY
MENU
DISPLAY
MENU
K-FACTOR
MENU
OUTPUT
MENU
RESET TOTAL
LOG TEST SAVE
ENTER
Day
Total
Rate
Calibrate instrument
Set flowmeter input sensitivity
Select pulse input
Enable/disable/set up 4-20 mAoutput
pulse output
Enter slave address
Enter baud rate
Enable/disable/set up
Set engineering units for Total readout
Set engineering units for Rate readout
Set decimal placement for both readouts
During calibration, navigates
between submenus and scrolls
through menu selections
During operation, accesses
daily volume archive During calibration, incrementally
changes digits and decimal point
position, on/off settings
During operation, tests temperature
and system voltage
During calibration, saves
calibration settings
During operation, saves
Total to nonvolatile memory
Note: To zero the Total
readout, press the LOG (left
arrow) and SAVE (ENTER)
keys simultaneously.
Figure 1.5—MC-III EXP keypad functions
Power Supply—CSA-Approved Units
The CSA-approved MC-III EXP is shipped with either a lithium battery or an alkaline battery pack.Alter-
nately, the MC-III EXP may be powered by an external power source; in this case, the lithium battery or alka-
line battery pack provides a backup power supply, signicantly extending battery service life. A low-power
microprocessor enables the MC-III EXP to operate approximately 2 years on a single lithium battery.
Wiring diagrams for connecting an external power supply are provided in Section 2, page 13.
Power Supply—ATEX-Approved Units
TheATEX-approved MC-III EXP is shipped with a lithium battery.Alternately, the MC-III EXP may be
powered by an external power source; in this case, the lithium battery provides a backup power supply,
signicantly extending battery service life. A low-power microprocessor enables the MC-III EXP to operate
approximately 2 years on a single lithium battery.
Wiring diagrams for connecting an external power supply are provided in Section 2, page 13.

8
Section 1 MC-III™ EXP Flow Analyzer
Multipoint Linearization
The MC-III interface software supports up to 12 calibration points in addition to single-point calibration based
on the K-factor provided with the turbine owmeter. See K-Factor Type, page 62, for more information.
Gas Volume Correction
Gas turbine meters are calibrated in actual cubic feet (ACF), and measure gas in actual cubic feet. In some
applications, a user may benet from referencing gas measurements back to standard conditions by measuring
in terms of standard cubic feet (SCF). The MC-III EXP makes this process quick and easy, by using xed
average values for the owing gas temperature and owing gas pressure. See Gas Volume Correction, page 64,
for more information.
Input Options
The owmeter signal can be obtained from a magnetic pickup or a pre-amplier device. The sensitivity of the
owmeter input may be adjusted with the instrument keypad or the interface software. See Section 2, page 13,
for wiring diagrams. See Section 3, page 30, and Section 4, page 41, for conguration procedures.
Output Options
The MC-III EXP standard circuitry provides:
• a scaled pulse output representing an increment in volume for each pulse
• a loop-powered 4-20 mA output representing the ow rate
• a owmeter frequency output for use with remote equipment to derive ow rate and volume
• an RS-485 output for communication with interface software or other telemetry equipment
When the 4-20 mA rate output feature is used, the MC-III EXP is powered by the current loop, and the lithium
battery or alkaline battery pack is used as a backup supply.
The pulse output and 4-20 mA output features should be turned off when not required for reduced current
consumption. See Section 2, page 13,for wiring diagrams. See Section 3, page 30, and Section 4, page 41, for
conguration procedures.
Flow Log Archival
The MC-III EXP saves up to 384 daily logs and 768 hourly logs in nonvolatile memory. By connecting with
the interface software, users can download the logs for viewing and/or printing in tabular format or in a trend
chart.
Users can also export daily and hourly logs to a spreadsheet. For more information, see Section 5, page 76.
Event Log Archival
The MC-III EXP saves up to 345 user event logs. Event logs are generated to track user changes such as K-
Factor changes, input setting changes, power-on reset and “watch-dog” reset, ow cut-off and frequency cut-
off.
By connecting with the interface software, users can download the logs for viewing and/or printing in tabular
format. In addition to showing old and new values, each event log is time-stamped, and includes the register
associated with the change. For more information, see Section 5, page 76.
Password-Protected Security
Akeypad security access code prevents unauthorized personnel from altering the calibration or accumulated
volume data in the instrument. The security feature may be disabled if this protection is not required.

9
MC-III™ EXP Flow Analyzer Section 1
Password-protected security access is enabled using the interface software. When this feature is enabled,
the user will be prompted for a password when attempting to enter any menu from the keypad. For more
information, see Security Setup, page 57.
Optional Features
Explosion-Proof Reset/Control Switch
An optional external reset/control switch allows the user to zero the total and view daily logs instantaneously
without opening the enclosure or accessing the interface software. The switch can be mounted in either of
the conduit openings near the top of the MC-III EXPenclosure. For installation and wiring instructions, see
Explosion-Proof Reset/Control Switch, page A-1.
Important: The switch is approved by CSA and SIRA (ATEX) for use in hazardous areas. The CSA-
approved model is Part No. 9A-30054001. The ATEX-approved model is Part No. 9A-
30054002.
Zeroing the Total. To reset the total with an explosion-proof switch, press and hold the switch for 3 seconds,
then release it.
Important: When resetting the total with the explosion-proof reset switch, do not release the switch
prematurely. Releasing the switch too quickly (before 3 seconds have passed) will
activate the daily log view function and WILL NOT reset the volume to zero.
Viewing Daily Logs. To view daily logs with the explosion-proof switch, press the switch for 1 second
and release it. Subsequent press-and-release actions increment the daily index, allowing the user to select
a specic daily total. Additionally, when the log viewing function times out, the accumulated total is
automatically saved to memory.
Saving the Total. When the daily log display times out, the MC-III EXPwill automatically save the
accumulated total.
RS-485 Communications Adapter
An explosion-proof communications adapter provides an RS-485 connection for connecting a laptop or PC
to the instrument without removing the instrument cover. When the adapter is ordered with an MC-III EXP,
it is factory installed. It may be relocated to either conduit opening in the instrument housing. When ordered
separately, the adapter is easily installed using the instructions provided in this manual. For installation and
wiring instructions, see Explosion-Proof Communications Adapter, page A-3.
Important: The RS-485 communications adapter is approved by CSA and SIRA (ATEX) for use in
hazardous areas. The CSA-approved model is Part No. 9A-90017004. The ATEX-approved
model is Part No. 9A-90017008.
USB Communications Adapter (CSA-Approved Units Only)
The USB communications adapter allows an MC-III EXPto be connected directly to a USB port of a laptop
or PC.A user-supplied universal USB cable is required. The adapter is factory-installed when purchased with
an MC-III EXP. It is also available as a kit with an installation CD for upgrading communications in a eld
unit. See USB Communications Adapter, page A-6.

10
Section 1 MC-III™ EXP Flow Analyzer
Important: The USB communications adapter is approved by CSA for use in hazardous areas. The
CSA-approved model is Part No. 2295524-01. The adapter kit, which includes an installa-
tion CD, is Part No. 2295634-01.
RS-485 IS Barrier (CSA-Approved Units Only)
The RS-485 output of a CSA-approved MC-III is approved for intrinsically safe installations. An intrinsically
safe barrier assembly with a conduit seal enables the RS-485 output to be used as an intrinsically safe output.
In such installations, only the turbine owmeter input may be used. See Figure 2.18, page 28, for an IS barrier
assembly wiring diagram.
Commonly Used Functions
While the functions of the MC-III EXPare too numerous to mention, some of the most commonly used
functions are detailed in this section. They include:
• reading the rate and accumulated total
• saving totals to memory
• resetting the total
• viewing daily and hourly logs
• saving and uploading conguration les
• exporting log data to spreadsheet
• saving log data in a report
Reading Totals
Current totals can be viewed from the LCD on the front of the MC-III EXPor from the interface software
(MC-III Main screen). The software calculates the ow total and updates the LCD display every 4 seconds, by
default. The user can adjust the calculation period with the interface software. See Calculation Period, page 61,
for more information.
Saving Totals to Memory
Hourly and daily totals are automatically saved to nonvolatile memory.Auser may save an accumulated total
at any time by opening the enclosure and pressing ENTER (SAVE) on the keypad. In the event of a power
failure, the last saved total will be displayed on the LCD when power is restored. See also Explosion-Proof
Reset/Control Switch, page 9.
Note: Always save the accumulated total before replacing batteries.
Resetting the Total
Totals can be reset to zero using the keypad, the interface software, an explosion-proof switch mounted in the
top of the enclosure (if equipped), or a pulse from an external device.
• To reset the total with the keypad, press LEFT ARROW (LOG) and ENTER (SAVE) keys simultaneously.
• To reset the total with the interface software, double-click the NuFlo MC-III icon on the computer desk-
top and wait for the software to connect to the instrument; then select MC-III Main from the Device
Autorun Options screen, and click on the “Reset Flow Total” button in the lower right corner of the Main
screen.

11
MC-III™ EXP Flow Analyzer Section 1
• To reset the total with an explosion-proof switch, press and hold the switch for 3 seconds, then release it.
See also Explosion-Proof Reset/Control Switch, page 9.
• To reset the total with an external pulse generator located in safe area, congure the pulse to be active for
3 seconds. See also Remote Reset Input, page 23.
Viewing Daily and Hourly Logs
Each day, as the user-dened contract hour passes, a daily ow total is saved to nonvolatile memory. Hourly
logs are also automatically saved.Atotal of 384 daily logs and 768 hourly logs are accessible for viewing and
exporting using the interface software. See Section 5, page 76, for details.
Up to 99 daily ow log totals can be viewed from the LCD. Hourly ow log totals are accessible only through
the interface software.
To view daily ow totals from the LCD, perform the following steps:
1. Press the LEFT ARROW (LOG) key on the keypad. The words “Daily Volume Archive” will scroll across
the bottom of the LCD and the day index will display “01.” The daily ow total recorded at the last con-
tract hour will appear at the top of the LCD.
The index number represents the number of days previous to the current date. For example, yesterday’s
totals are read by entering an index of “01”; totals from two days previous are read by entering “02.”
2. Press UP ARROW (TEST) to increment the index (01, 02, 03...); press LEFT ARROW (LOG) to decre-
ment the index (01, 99, 98...).
3. Press ENTER (SAVE) to exit the Daily Volume Archive menu. (After 2 minutes of inactivity, the Daily
Volume Archive menu will timeout and the total readout will be restored automatically.)
The optional explosion-proof reset switch also allows users to view daily log totals. For more information, see
Explosion-Proof Reset/Control Switch, page 9.
Saving and Uploading Conguration Files
The MC-III interface software allows users to save an unlimited number of conguration les to their
computer. In the event that a conguration setting gets changed unintentionally or a user simply wants to
restore the settings he used previously, the user can upload the conguration le and resume operation within
minutes. The upload function also allows a conguration le to be loaded quickly into multiple devices. The
default directory for saving conguration les is C:\NuFlo log data\MC-III. However, the user can specify a
different location, if desired.
For complete information, see Saving and Uploading Conguration Files, page 71.
Exporting Log Data
Flow logs and event logs can be directly exported to an .xls or .csv le. For complete information, see
Exporting Flow Logs, page 83,and Exporting Event Logs, page 86. The default directory for exported logs is C:\
NuFlo log data\MC-III. However, the user can specify a different location, if desired.
Saving Log Data in a Report
Flow logs can be saved in a report format that can be loaded back into the software for viewing or printing
at a later time. For complete information, see Printing/Saving a Report, page 86. The default directory for log
reports is C:\NuFlo log data\MC-III\<WELL NAME>. However, the user can specify a different location.

12
Section 1 MC-III™ EXP Flow Analyzer

13
MC-III™ EXP Flow Analyzer Section 2
Section 2—Installation
The MC-III™ EXP is fully assembled at the time of shipment and ready for mounting to a owmeter. Field
wiring enters the MC-III EXP enclosure through either of two threaded conduit openings in the top of the
enclosure. When not in use, the openings are sealed with pipe plugs (Figure 2.1). Ground screws are provided
both inside and outside the enclosure.
The device is shipped with ¾” recessed pipe plugs installed facing right and left, and the pipe union facing
downward. If the device is equipped with an explosion-proof reset switch or a communications adapter, only
one plug is required. The switch may be installed in the right or left conduit opening.
Pipe plugs
Ground
screws
Figure 2.1—Enclosure entry and ground screw locations
Installation requirements and meter mounts vary with certication regulations and meter types. For ATEX
installation requirements, see HazardousArea Installations (ATEX) below. For CSAinstallation requirements,
see Hazardous Area Installations (CSA), page 17.
Cameron recommends that operators congure the device prior to mounting if the instrument is to be installed
in a hazardous area. The enclosure must be opened to congure the device, either via keypad controls or via
software.
!WARNING: Once the instrument is mounted in a hazardous area, the cover should not be re-
moved unless the area is void of combustible gas and vapors.
Hazardous Area Installations (ATEX)
The ATEX-certied MC-III EXP is fully compliant with European ATEX Directive 94/9/EC, Annex II,1.0.6.
The following instructions apply to equipment covered by certicate numbers 10ATEX1264X and IECEx
SIR10.0127X :
• The device may be used in the presence of ammable gases and vapours with apparatus groups IIA, lIB
and IIC and with temperature classes T1, T2, T3, T4, T5, and T6.
• The device is certied for use in ambient temperatures in the range -40°C to 70°C and should not be used
outside this range.

14
Section 2 MC-III™ EXP Flow Analyzer
• The device has not been assessed as a safety-related device (as referred to by Directive 94/9/EC Annex II,
clause 1.5).
• Installation shall be carried out by suitably trained personnel in accordance with the applicable code of
practice (EN 60079-14 within Europe).
• Repair of this equipment shall be carried out by Cameron or in accordance with the instructions in this
manual.
• If the instrument is likely to come into contact with aggressive substances, the user is responsible for tak-
ing suitable precautions to prevent it from being adversely affected, thus ensuring that the type of protec-
tion is not compromised.
– Aggressive substances may include, but are not limited to, acidic liquids or gases that may attack met-
als, or solvents that may affect polymeric materials.
– Suitable precautions may include, but are not limited to, regular checks as part of routine inspections
or establishing from the material’s data sheet that it is resistant to specic chemicals.
Conditions for Safe Use (ATEX)
• Under rated conditions, the branching point at the entry point may reach 80°C, therefore, when choosing
cables and cable glands this shall be taken into account.
• When removing the conduit plug to t the data transfer socket to the communication adaptor and during
data transfer, the user/installer shall ensure that no explosive atmosphere is present.After data transfer has
nished, the conduit plug shall be re-tted in accordance with the relevant Code of Practice.
• When the standoff tube is tted, it shall be used with turbine meter pick off coil bosses in accordance to
those listed in certicate Sira 03ATEX1474U.
• The product may be tted with a communication adaptor. When removing the conduit plug to t the data
transfer socket to the communication adaptor and during data transfer, the user/installer shall ensure that
no explosive atmosphere is present. After data transfer has nished, the conduit plug shall be re-tted in
accordance with the relevant Code of Practice.
• Some external parts of products that have aluminium housing are non-conducting and may generate an
ignition-capable level of electrostatic charges under certain extreme conditions.The user should ensure
that the equipment is not installed in a location where it may be subjected to external conditions (such as
high-pressure steam) which might cause a build-up of electrostatic charges on nonconducting surfaces.
Additionally, cleaning of the equipment should be done with a damp cloth.
• An ATEX-approved standoff tube shall be used with a Barton 7000 Series turbine pickup coil boss or a
NuFlo turbine pickup coil boss in accordance with certicate SIRA 03ATEX1474U. See the MC-III Parts
List (ATEX), page 98, for part numbers.
• Replace the lithium battery only with the ATEX-approved battery supplied by Cameron (Part No. 9A-
90099000).
• The lithium battery that powers the MC-III EXPis a sealed unit; however, should a lithium battery
develop a leak, toxic fumes could escape upon opening the enclosure. Ensure that the instrument is in a
well-ventilated area before opening the enclosure to avoid breathing fumes trapped inside the enclosure.
Exercise caution in handling and disposing of spent or damaged batteries.