NuFlo MC-II Plus Weatherproof User manual

Manual N
o
. 101235341, Rev.
E
NuFloTM
Flow Analyzers:
MC-II Plus Weatherproof
and MC-II Plus Panel Mount
User Manual

© 2005 NuFlo Technologies, Inc. All information contained in this publication is confidential and
proprietary property of NuFlo Technologies, Inc. Any reproduction or use of these instructions,
drawings, or photographs without the express written permission of an officer of NuFlo
Technologies, Inc. is forbidden.
All Rights Reserved.
Printed in the United States of America.
Manual No. 101235341, Rev. E
May 2005

MC-II Plus WP-PM Flow Analyzer
May 2005 T-1
TABLE OF CONTENTS
Introduction...........................................................................................................1
Specifications........................................................................................................2
Installation.............................................................................................................3
Operation..............................................................................................................3
Error Detection......................................................................................................4
Calibration.............................................................................................................6
Liquid Measurement Using Preprogrammed Units of Measure..................6
Gas Measurement Using Preprogrammed Units of Measure...................10
Liquid Measurement Using a Calculated Divisor and Rate Multiplier.......14
Gas Measurement Using a Calculated Divisor and Rate Multiplier..........18
Time Out Feature................................................................................................22
Presetting Volume...............................................................................................22
Setting Flow Rate Filtering..................................................................................23
Setting Input Sensitivity.......................................................................................23
Configuring Pulse Output....................................................................................24
Configuring the 4-20 mA Rate Output.................................................................26
Setting a Security Code......................................................................................28
Accessing an MC-II Plus with a Security Code...................................................28
Appendix A1 – Installation – Panel Mount MC-II Plus..................................... A1-1
General ................................................................................................ A1-1
Input / Output Features ........................................................................ A1-1
Pulse Output ............................................................................. A1-1

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External Power Supply.............................................................. A1-2
4-20 mA Rate Output................................................................. A1-2
Flow Meter Frequency Output................................................... A1-3
Remote Reset Input................................................................... A1-3
MC-II Plus DIN Panel Mount Nomenclature......................................... A1-4
MC-II Plus Double Wide Single Readout Nomenclature ...................... A1-5
MC-II Plus Double Wide Two Readout Nomenclature ......................... A1-6
MC-II Plus DIN Panel Mount Dimensional............................................ A1-7
MC-II Plus Double Wide Single Readout Dimensional......................... A1-8
MC-II Plus Double Wide Two Readout Dimensional............................ A1-9
Wiring Diagrams................................................................................. A1-10
Flow Meter Input...................................................................... A1-10
Pulse Output............................................................................ A1-11
External Power Supply............................................................ A1-12
4-20 mA Rate Output............................................................... A1-13
Flow Meter Frequency Output................................................. A1-14
Reset Input with Power Supply and Reset Switch.............................. A1-15
Reset Using MC-II Plus Battery and Reset Switch............................ A1-16
Panel Mount MC-II Plus Part Numbers .............................................. A1-17
Appendix A2 – Installation - Weatherproof MC-II Plus.................................... A2-1
General ................................................................................................ A2-1
Mounting on the Flow Meter................................................................. A2-1
Remote Mounting................................................................................. A2-1

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Input / Output Features ........................................................................ A2-2
Pulse Output ............................................................................. A2-2
External Power Supply.............................................................. A2-3
4-20 mA Rate Output................................................................. A2-3
Flow Meter Frequency Output................................................... A2-4
Remote Reset Input................................................................... A2-4
MC-II Plus Nomenclature..................................................................... A2-5
Direct Mount Mounting Dimensions ..................................................... A2-6
Remote Mount Mounting Dimensions - Vertical Pole Mount................ A2-7
Remote Mount Mounting Dimensions – Horizontal Pole Mount...........A2-8
Weatherproof MC-II Plus Part Numbers............................................... A2-9
Appendix B - Maintenance................................................................................ B-1
Battery Replacement.............................................................................. B-1
Circuit Assembly Replacement .............................................................. B-2
Spare Parts List...................................................................................... B-3
Appendix C - Configuration Menu Flowchart ....................................................C-1
Appendix D - User Interface Prompt Glossary..................................................D-1
Appendix E - Data Tables................................................................................. E-1
Table 1 - Determining Atmospheric Pressure from Elevation................. E-1
Table 2 - Table of Conversions of Temperatures................................... E-2
Table 3 - Table of Conversions of Liquid Volumes................................. E-2
Table 4- Table of Conversions of Gas Volumes..................................... E-2
Appendix F - Calibration Data Sheet..................................................................F-1

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Appendix G - Lithium Battery Information.........................................................G-1
Lithium Battery Disposal.........................................................................G-1
Transportation Information.....................................................................G-3
Appendix H – Relay Pulse Output Board Option ..............................................H-1
Installation..............................................................................................H-1
Specifications.........................................................................................H-2
Relay Pulse Output Wiring.....................................................................H-3
Relay Pulse Output Board with Optoisolator Wiring...............................H-3
Relay Pulse Output Wiring Providing External Power
to Main Board.........................................................................................H-4
Relay Installation....................................................................................H-5
Optoisolator Installation..........................................................................H-6

MC-II Plus WP-PM Flow Analyzer
May 2005 1
Introduction
The NuFlow Measurement Systems MC-II Plus Flow Analyzer provides a continuous
display of flow rate and accumulated volume of liquids and gases. When combined
with a NuFlo turbine meter, the MC-II Plus Flow Analyzer becomes an accurate
system for the measurement and display of instantaneous flow rate and volume. In
addition, the MC-II Plus Flow Analyzer provides a scaled pulse output representing
an increment in volume for each pulse and a 4-20 mA output representing the flow
rate. The pulse out and 4-20 mA output sections can be disabled, therefore
reducing current consumption if they are not required. Additional features are a flow
meter frequency output, which may be used by remote equipment to derive flow rate
and volume, and a reset feature that allows resetting of the volume to zero from a
remote location. An optional dual contact closure relay pulse output board is also
available.
A security access code prevents unauthorized personnel from altering the calibration
or accumulated volume data in the instrument. The security code may be disabled if
this feature is not required. A preprogrammed volume may be entered into the MC-II
Plus Flow Analyzer. This is a valuable feature in instances where the MC-II Plus
Flow Analyzer is replacing other equipment and it is necessary to resume counting
volume from the previous measurements. Also, the input sensitivity of the flow
meter input may be adjusted from the front panel, eliminating the necessity to
connect test equipment for this adjustment.
The one-piece LCD simultaneously displays a seven-digit volume, a six-digit rate, as
well as a selection of commonly used rate and volume engineering units. The
seven-digit volume is displayed on the upper line of the LCD, with the volume
decimal point position selected by the operator during calibration. The six-digit rate
is displayed on the lower line of the LCD. The rate decimal point position is
determined internally by the MC-II Plus Flow Analyzer. The rate decimal point will
shift positions as the rate changes to provide maximum resolution.
Low power microprocessor technology enables the MC-II Plus Flow Analyzer to
operate approximately two years on a single lithium battery. The MC-II Plus Flow
Analyzer may be powered by an external power source using the lithium battery only
as a backup supply, therefore extending the service life of the battery. When the 4-
20 mA output feature is used, the MC-II Plus Flow Analyzer is powered by the
current loop and the lithium battery again is used only as a backup supply.
The MC-II Plus Flow Analyzer is available in panel mount and weatherproof
versions.
Three panel mount versions are available. The first version fits the ¼ DIN square
panel opening. The second version fits the standard rack opening containing
one Panel Mount MC-II Plus Flow Analyzer. The third version also fits the standard
rack opening except it contains two Panel Mount MC-II Plus Flow Analyzers.

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The Weatherproof MC-II Plus Flow Analyzer allows for use in outdoor locations,
provides excellent protection from the elements, and offers a convenient means of
mounting directly to the turbine meter. A remote mount version is also available.
Specifications
Enclosure Panel Mount
¼ Square DIN mounting MC-II Plus Flow Analyzer
or
Rack mounting front panel 8.75” H x 5.79” W
with one MC-II Plus Flow Analyzer
or
Rack mounting front panel 8.75” H x 5.79” W
with two MC-II Plus Flow Analyzers
Weatherproof
Direct mount – fiberglass, mounts directly on meter
Or
Remote mount – fiberglass, mounts on pole or bulkhead
System Power Internal Power Supply - 3.6 VDC, D-size lithium battery
External power supply (8 to 30 VDC) with internal battery backup
(reverse polarity protected)
Loop powered (4-20 mA) with internal battery backup
(reverse polarity protected)
Loop Burden: 8 VDC
Maximum voltage: 30 VDC
Load resistance: 1100 ohms @ 30 VDC
250 ohms @ 13 VDC
Operating Temperature -40°C to 75°C (-40°F to 167°F)
LCD: -30°C to 75°C (-22°F to 167°F)
LCD Display Simultaneous display of 7-digit volume, 6-digit rate, 0.3” character
height
Displays units of measurement
BBL, GAL, MCF and M³for volume
BPD, GPM, MCF/D and M³/D for flow rate
Updates every 2 seconds
Keypad 4-key membrane switch
Inputs Pulse input from flow meter, 15 to 3500 Hz, 20 mV to 10 V, input
sensitivity keypad configurable from 20 mVP-P to 120 mVP-P
Remote volume reset, optically isolated (bi-directional) input, 3–30
VDC supply range, contact duration 25 mS

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Specifications (cont’d)
Outputs Flow Meter Frequency, open collector output, 5 to 30 VDC,
Maximum current = 50 mA
Leakage current = 1 uA
On-state drop = 0.25 VDC at 50 mA, 0.1 VDC at 10 mA
Pulse output with a pulse representing volume increments from
0.001, 0.01, 0.1, 1, 10, and 100 and a pulse duration of 65, 130,
195, 260, 520, and 1040 mS, optically isolated open collector
output, 5 to 30 VDC power supply, 40 mA maximum @ 30 VDC
On-state drop = 1.8 VDC at 50 mA, 1.6 VDC at 10 mA
Dual Contact Closure Pulse Output – OPTIONAL
Reference Appendix H for complete specifications.
4-20 mA, 2 wire loop powered, representing flow rate
16 bit resolution, .05% of full scale @ 25°C
50 PPM/°C temperature drift
Updates once per second
DAC calibration via keypad
Installation
Panel Mount
The Panel Mount MC-II Plus Flow Analyzer is shipped completely assembled. After
the flow meter and magnetic pickup are installed in the flow line in accordance with
the furnished instructions, follow the installation instructions outlined in Appendix A1.
Weatherproof
The Weatherproof MC-II Plus Flow Analyzer is shipped completely assembled. After
the flow meter and magnetic pickup are installed in the flow line in accordance with
the furnished instructions, follow the installation instructions outlined in Appendix A2.
Operation
The MC-II Plus Flow Analyzer has two modes of operation, Run Mode and Calibrate
Mode.
The Run Mode is the operational function of the MC-II Plus Flow Analyzer where it is
placed in service to display rate and volume. If the MC-II Plus Flow Analyzer has
not been calibrated, it will have to be calibrated before being placed in service. The
Calibration section provides a step-by-step procedure for configuring the MC-II Plus
Flow Analyzer.
The Calibrate Mode of the MC-II Plus Flow Analyzer allows entry of calibration data
into the instrument. While in the Calibrate Mode, the upper line of the display will
have prompts consisting of abbreviated words with each letter formed with a 7-

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4 May 2005
segment character. Due to the limitations of a 7-segment character, some of the
letters will be upper case and some will be lower case. On the lower line of the
display, the calibration data is entered. While in Calibrate Mode, each digit is
changed one at a time. The digit selected to be changed will be blinking on and off.
In the following operation and calibration examples, display prompts and keypad
names will be shown in BOLD type. The prompts will be shown in upper and lower
case letters to illustrate approximately the way that they will appear on the display.
The keypad operation is described as follows:
ACCESS: If the ACCESS key is pressed while in the Run Mode, the MC-II Plus
Flow Analyzer will be placed in the Calibrate Mode. Pressing the
ACCESS key while the MC-II Plus Flow Analyzer is in the Calibrate
Mode will return the instrument to the Run Mode. When returning to
Run Mode by pressing the ACCESS key, any data that has been input
with the ENTER key being pressed afterward will be saved to memory.
Any data that has been input without the ENTER key being pressed
afterward will not be saved, and the data entered from a previous
calibration will be retained.
STEP: The STEP key is primarily used in the Calibrate Mode. Pressing the
STEP key advances the digit to be changed to the left. If the left-most
digit is selected, pressing the STEP key again advances the digit to be
changed to the right-most digit. The STEP key is also used to toggle
settings and decimal point locations.
INCR: The INCR (increment) key is primarily used in the Calibrate Mode.
While entering numbers, the INCR key advances the value of the digit
to be changed by one from its initial value each time it is pressed. If
the INCR key is pressed when the digit is nine, the value rolls over to
zero. The INCR key is also used to toggle settings and decimal point
locations.
ENTER: The ENTER key functions only in the Calibrate Mode. Pressing the
ENTER key enters the displayed data for the current calibration
function and advances to the next calibration function.
Error Detection
The MC-II Plus Flow Analyzer will inform the operator of detected errors while in the
Run Mode. The Error message will be displayed to the operator in the form of the
word Error displayed on the rate display section (lower line of the display), every
other time that the rate is updated. There may be from one to four errors detected at
any one time.