Cameron NuFlo MC-II User manual

NUFLO™
MC-II™ FlowAnalyzer
User Manual
Manual No. 100079666, Rev. OE

Important Safety Information
Symbols and Terms Used in this Manual
WARNING: This symbol identifies 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 per-
sonal 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.
NuFlo and MC-II are trademarks of Cameron International Corporation (“Cameron”).
© 2006 Cameron International Corporation (“Cameron”). All information contained in this publication is
confidential and proprietary property of Cameron. Any reproduction or use of these instructions, drawings, or
photographs without the express written permission of an officer of Cameron is forbidden.
All Rights Reserved.
Printed in the United States of America.
Manual No. 100079666, Rev. OE
December 2006
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MC-II Flow Analyzer
Table of Contents
Introduction ........................................................................................................................................................1
Specifications – Standard Unit Without Options............................................................................................4
Installation ..........................................................................................................................................................5
General ..........................................................................................................................................................5
Direct Mounting..............................................................................................................................................5
Remote Mounting ..........................................................................................................................................5
Attaching Switchplate Labels.........................................................................................................................7
Wiring the MC-II Circuit Board.......................................................................................................................8
Operating Your MC-II..........................................................................................................................................9
RUN Mode Keypad Functions...........................................................................................................................9
Save/Store Data ............................................................................................................................................9
Change Decimal Point Position .....................................................................................................................9
View Calibration Factor................................................................................................................................10
Adjust LCD Contrast .................................................................................................................................... 11
Zero the Total.....................................................................................................................................................................11
Timing Out ................................................................................................................................................... 11
Correct Overrun Error .................................................................................................................................. 11
Enable Password Security Option ............................................................................................................... 11
Data Entry Tips...................................................................................................................................................12
Bypass Security Password
..........................................................................................................................12
Recalibrating Your MC-II..................................................................................................................................13
Example: Liquid Measurement with Preprogrammed Units of Measure ....................................................17
Example: Liquid Measurement with User-Defined Units of Measure ..........................................................20
Example: Gas Measurement Using a Calculated Divisor............................................................................24
Maintenance .....................................................................................................................................................25
Recalibration................................................................................................................................................25
Battery Replacement ...................................................................................................................................25
Appendix A—Pulse Output Option, Non-Intrinsically Safe..........................................................................29
MC-II Pulse Output Circuit Assembly (Part No. 100005121; nonhazardous use) ......................................29
Pulse Input...................................................................................................................................................29
Pulse Output ................................................................................................................................................29
Electrical Specifications ...............................................................................................................................29
Data Entry Tip............................................................................................................................................................30
Installing the Pulse Output Circuit Assembly
...............................................................................................30
Selecting a Scale Factor..............................................................................................................................30
Configuring the Pulse Output Option...........................................................................................................30
Appendix B—Pulse Output Option, Intrinsically Safe..................................................................................35
MC-II Pulse Output Circuit Assembly (Part No. 100005163; Intrinsically Safe) .........................................35
Pulse Input - Intrinsically Safe .....................................................................................................................35
Pulse Output - Intrinsically Safe ..................................................................................................................35
Electrical Specifications - Intrinsically Safe .................................................................................................35
Data Entry Tip............................................................................................................................................................36
Installing the Pulse Output Circuit Assembly...............................................................................................36
Choosing a Scale Factor .............................................................................................................................36
Configuring the Pulse Output Option .......................................................................................................... 36

MC-II Flow Analyzer
Appendix C—Lithium Battery Information.................................................................................................... 39
Lithium Battery Disposal ................................................................................................................................ 39
Transportation Information ............................................................................................................................ 39

MC-II Flow Analyzer
1
Introduction
The NuFlo MC-II Flow Analyzer combines with a turbine flowmeter to provide an accurate display of accu-
mulated flow volume and flow rate of liquids and gases in a simple-to-use, battery-powered instrument. The
MC-II’s microprocessor circuitry counts the pulses generated by a companion flowmeter, converts that data
into volume and rate values in accordance with calibration settings, and displays the totalized data on two
six-digit liquid crystal displays (LCD’s). The top LCD indicates total flow volume; the bottom LCD indicates
flow rate.
The flow rate decimal point position is determined auto-
matically by the MC-II, as dictated by flow conditions. As
the flow rate changes, the flow rate decimal point will shift
position to provide maximum resolution.
The MC-II has no internal potentiometers, jumpers, or dip
switches to adjust. For applications that rely on standard
engineering units, the MC-II automatically calculates the
divisor when you supply the calibration factor of the com-
panion flowmeter.
With the simplistic MC-II design, you can save totals in
nonvolatile memory with the press of a button on the key-
pad, or reset the total display (to zero or to a predetermined
value).
A password-protection security feature deters unauthor-
ized personnel from altering the calibration or accumulated
volume data in the instrument. The security function may
be enabled or disabled, using the keypad.
The low current draw of the MC-II’s CMOS circuitry enables the MC-II to run for 3 to 5 years on a single
3.6V lithium battery. This durable power supply and the MC-II’s noncorrosive weatherproof enclosure make
it ideal for use in remote locations.
In addition, the MC-II can be purchased with a pulse-output option that provides a scaled pulse output rep-
resenting an increment in volume for each pulse. The pulse output function can be disabled when not in use,
reducing current consumption. Installation and operation instructions for the pulse output option are provided
in Appendices A and B.

MC-II Flow Analyzer
2
Figure 1—Nomenclature (exterior)

MC-II Flow Analyzer
3
Figure 2—Nomenclature (interior)

MC-II Flow Analyzer
4
Specifications – Standard Unit Without Options
Size: 7.3 in. wide x 8.3 in. high x 3.4 in. deep
Shipping weight: 6 lb including shipping container
Power supply: One lithium battery (supplied with instrument), Part No. 100005111
Average battery life: 3 to 5 years
Temperature range: -40 to +140°F (-40 to +60°C)
Totalizer: Six digits, 0.5 in. character height, registering barrels (1/10, 1/100 available)*
Divisor or calibration factor range: 0.001 to 999,999
Flow rate: Six digits, registering barrels per day*
Updates once per second
Accuracy: ±1 count (totalizer)
Input frequency: 0 to 3500 Hz
Input amplitude: 30 to 3000 mV peak to peak
Signal cable: 1-ft length
Mounting: MC-II enclosure mounts directly on a weatherproof pickup adapter (provided) which
threads onto the turbine meter. The pickup adapter tilts and swivels for ease in
optimizing visibility of the displays.
Compliances: CSA certified intrinsically safe in hazardous locations
Class I, Division 1, Groups A,B,C,D
Type 4 enclosure
* Default settings are barrels (volume) and barrels per day (rate) unless otherwise specified at the time of
order.

MC-II Flow Analyzer
5
Installation
General
The MC-II Flow Analyzer is most commonly mounted directly on top of its companion flowmeter. However,
if the flowmeter is in a line that has vibration or if the meter’s location makes a direct mount difficult, the MC-
II can be mounted on vertical or horizontal 2-in. pipe (additional hardware is required).
With either installation method, the mounting location should be free of vibration, and the MC-II should be
oriented so that the liquid crystal displays (LCDs) are not exposed to direct sunlight.
Direct Mounting
In preparation for the installation of the MC-II, install the companion flowmeter in the flow line and install
the magnetic pickup according to the flowmeter instruction manual. Grease the pickup threads that mate with
the flowmeter body and the pickup threads that mate with the MC-II signal cable connector to facilitate easy
removal in the future.
If the remote mounting option was ordered with the MC-II, see “Remote Mounting” for installation instruc-
tions.
The MC-II is fully assembled at the time of shipment. To install the MC-II, perform the following steps:
1 Plug the MC-II cable connector into the pickup and turn the swivel nut clockwise until the connector is
fully inserted into the pickup and the swivel nut is hand-tight.
2. Loosen the locking screws that secure the base MC-II mount (Figure 1, page 2).
3. Position the MC-II on the flowmeter, carefully pulling excess signal cable through the strain relief cord
connector on the side of the upper mount (see Figure 2, page 3).
4. Thread the base of the mount onto the conduit adapter of the turbine meter and tighten two extra rounds
after it is hand-tight. It is important that the upper mount and MC-II readout be kept from turning while
the base is being tightened in order to prevent the signal cable from being damaged by twisting.
5. Tighten the outside nut of the strain relief cord connector on the upper mount with a 15-mm open-end
wrench to prevent cord slippage.
6. Adjust the MC-II readout for best viewing position and tighten the locking screws in the upper mount.
The viewing angle may be adjusted by loosening the nut on the bolt which holds the MC-II readout on the
upper mount, tilting the unit to the desired angle and retightening the nut.
Remote Mounting
In most applications, the MC-II Flow Analyzer is installed directly on top of the flowmeter. However, if the
flowmeter is in a line that has vibration or if the meter’s location makes a direct mount difficult, a remote
mount may be preferred. Remote mounting hardware allows the MC-II to be mounted on a 2-in. pipe.
The remote mounting option kit consists of a mounting bracket, “U” bolts, nuts and lock washers, weather-
proof adapter, and 10-ft signal cable assembly. Additional signal cable length is available if required.

MC-II Flow Analyzer
6
Figure 3—Direct mount dimensions (inches and millimeters)
Figure 4—Remote mount dimensions (inches and millimeters)

MC-II Flow Analyzer
7
To install the MC-II with the remote mount option, perform the following steps:
1. Place the “U” bolts around the pipe the MC-II is to be mounted on, then through the mounting bracket.
Note that the holes in the mounting bracket are arranged such that it may be used with horizontal or verti-
cal pipe. (Note: Disregard the center hole in the mounting bracket.)
2. Fasten the bracket with the lock washers and nuts.
3. Use the bolts, lock washers and nuts provided to attach the MC-II to the bracket. Position the MC-II to
the viewing angle desired before tightening the nut.
CAUTION: Before performing the next step, make sure the enclosure is in a well-ventilated area
and avoid breathing fumes that could be trapped inside. Under normal operating conditions,
the lithium battery that powers the MC-II is a sealed unit and poses no hazard when the enclo-
sure is opened. However, a leak in a lithium battery could expel toxic fumes into the enclosure.
If the battery appears to be damaged, adhere to the safety precautions and follow the disposal
instructions provided in Appendix C.
4. Open the enclosure and install the signal cable as follows:
a. Feed cable through the rubber grommet and make a knot or install a cable tie inside housing, allowing
enough free length to connect wires to the terminal connector.
b. Feed the black lead and shield into terminal connector number 2 and screw retainer down tight.
c. Feed red or white lead into terminal connector number 1 and screw retainer down tight.
d. Close the enclosure and retighten all eight screws.
Attaching Switchplate Labels
Each MC-II is shipped with a label set containing commonly used volume and flow rate units of measure
labels. Unless otherwise specified, the MC-II default units are barrels (volume), and barrels per day (rate). If a
different unit of measure will be used, place the appropriate label on the front panel below the respective LCD
viewing window. Make sure that the labels match the configuration (see “Recalibrating Your MC-II”).
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MC-II Flow Analyzer
8
Vmax = 6.0 VDC or peak
Voc = 5.88 VDC
Isc = 2.94 F mA
Ca = 15 μF max
La = 2H max
Wiring the MC-II Circuit Board
The MC-II’s simplistic design makes wiring easy. See the wiring diagram below for reference in properly wir-
ing the MC-II to the battery and the flowmeter.
Figure 5—Wiring of the MC-II circuit board (MC-II Flow Analyzer is CSA-approved for use in HAZARDOUS
areas when installed in accordance with drawing 101231210 shown above)

MC-II Flow Analyzer
9
Operating Your MC-II
If you purchased a companion NuFlo flowmeter with your MC-II Flow
Analyzer, the MC-II has been calibrated for use with that flowmeter at the
factory, and your MC-II is ready for operation as soon as the installation
is completed.
If you did not purchase a NuFlo flowmeter with the MC-II, or if the
MC-II is being used with a different flowmeter, you must recalibrate the
MC-II before placing it into service. See “Recalibrating Your MC-II,”
page 13, for instructions.
When fluid begins to pass through the flowmeter, the MC-II will register
total accumulated flow volume in the top LCD and instantaneous flow
rate in the bottom LCD. Decimal points will appear in their proper posi-
tion in the displays when the unit is properly calibrated.
The MC-II has two modes of operation, Run Mode and Calibrate Mode.
The Run Mode is the standard operating mode during which the instru-
ment displays flow rate and volume. The Calibrate Mode of the MC-II
allows entry of calibration data into the instrument using the six red keys
aligned on the switchplate. Abbreviated menu names will appear in the
upper display, and calibration data will be entered in the lower display.
As indicated on the switchplate, the first four keys are primarily used for
calibrating the MC-II. The VIEW DIV and RESET keys are usedprimar-
ily in the Run mode. See Table 1 (page 10) for a description of all keypad
functions.
Due to the limitations of a 7-segment character, some of the letters in the
menu names will be uppercase and some will be lowercase. All available
unit abbreviations for volume totals and flow rate are listed in the outside
column of this page.
RUN Mode Keypad Functions
Save/Store Data
Loss of battery power can result in the loss of unsaved data. To store the
total accumulated flow volume to nonvolatile memory, press ENTER/
STEP each time you check the flow. The saved total accumulated volume
value will be available when battery power is restored.
Total accumulated volumes are also automatically saved each time you
exit the Calibrate menu.
Change Decimal Point Position
Volume readouts can be displayed in values as small as 0.001 of a unit by
changing the decimal point position. In Run mode, press DEC. POINT
until the desired decimal position is achieved. The decimal point position
in flow rate readouts adjusts automatically and cannot be changed.
Volume Units
= barrels*
RATE
= gallons
RATE
= cubic meters
RATE
= liters
RATE
= user-defined
RATE
Flow Rate Units
= bbls/day*
RATE
= gal/min
= cubic m/day
= liters/min
= per day**
= per hour**
= per minute**
= per second**

MC-II Flow Analyzer
10
Table 1—MC-II Keypad Functions
RUN MODE FUNCTIONS
ENTER/STEP Saves current volume total in nonvolatile memory.
RESET
Allows user to zero the volume.
VIEW DIV
Displays the current calibration factor.
DEC. POINT
Changes the position of the decimal point in the TOTAL (top) display.
INCREMENT
Adjusts the LCD contrast.
CALIBRATE MODE FUNCTIONS
ACCESS
Places the MC-II in the Calibrate Mode and permits you to perform the following tasks:
Set units of measure for the TOTAL (top) display.
Set the calibration factor.
Set the units of measure for the RATE (bottom) display.
Select or deselect the pulse output option.
Select or deselect the password-protected security option.
Preset a total. (If an MC-II must be replaced, the user can enter the volume from the previous analyzer and
prevent the loss of this data when the volume count resumes. See Step 7 of the calibration procedure on
page 16.)
SHORTCUT: Press and hold ACCESS for 3 seconds, then release to accept an existing NUMERICAL
calibration setting and advance to the next menu option. This shortcut is applicable to NUMERICAL data fields
only.
DEC. POINT
Moves the position of the decimal point when entering numerical data such as a calibration factor.
INCREMENT
Scrolls/toggles through available settings for each menu option, and allows the user to change the flashing
digit when inputting numerical settings. A single press advances digits/text entries to the next available setting.
Depressing and holding the INCREMENT key scrolls through all digits.
ENTER/STEP
Accepts the calibration setting shown on the display and advances to the next data entry position (flashing digit
field) or menu option.
RESET
Allows the user to re-enter a numerical value in the bottom display (if the value has not been accepted by
pushing the ENTER/STEP button. To re-enter the value, press and hold RESET for 3 seconds, then release.
The right-most digit will begin flashing, allowing the user to re-enter the value, right to left.
View Calibration Factor
Press VIEW DIV key at any time during the Run mode to view the current calibration
factor. If the MC-II is programmed to display a preprogrammed unit, the calibration fac-
tor will be displayed in pulses per gallon, and the abbreviation PuP.gAL will appear in
the top LCD window.
If the MC-II is programmed to display a user-defined unit, “uSEr” will appear in the top
LCD window, and a calculated divisor will be displayed in the bottom window. See “Ex-
ample: Liquid Measurement with User-Defined Units of Measure” on page 20 for more
information.

MC-II Flow Analyzer
11
Adjust LCD Contrast
Dramatic changes in temperature may cause changes in the LCD contrast.
To adjust this contrast in Run mode, press INCREMENT repeatedly or
press it and hold to scroll through the various contrast levels.
Zero the Total
At times, a user may wish to reset the volume total to zero. To reset the
volume total, perform the following steps:
1. Verify that the instrument is in Run mode.
2. Press and hold RESET for 3 seconds and release.
a. If the security option is disabled, the total display will automati-
cally revert to all zeros.
b. If the security option is enabled, you will be prompted for a
password. See “Enable Password Security Option” below. If the
correct password is entered, the total will reset to zero.
Timing Out
If the MC-II is left in the Calibrate mode for longer than 1 minute, it will
time-out and return to the Run mode. Data stored with the ENTER/STEP
key will be saved. Data that was selected but not entered will be lost.
Correct Overrun Error
If the calculated flow rate contains more than six digits, the MC-II will gen-
erate an overrun error. A prompt, oU run, will appear in the lower LCD.
To correct this error, enter the Calibrate Mode and change the flow rate unit.
Enable Password Security Option
Your MC-II is designed with a password-protected security option to help
deter unauthorized personnel from adjusting calibration settings. When
the security function is enabled, the user will be prompted for a password
each time he presses ACCESS to enter Calibrate mode (immediately fol-
lowing the diagnostic test).
The security option is disabled before the MC-II is shipped from the fac-
tory. To enable the security function, perform the following steps:
1. Press and hold ACCESS for 3 seconds, then release, to enter Cali-
brate mode. Following a quick diagnostic test, the CodE prompt will
appear in the top display. The bottom display should read no.
2. Press INCREMENT to toggle the bottom display setting to YES.
3. Enter a password containing up to six digits, entering the digits from
left to right. If the password contains less than six digits, enter zeros
for the remaining digits.
4. Press ENTER/STEP to accept this selection.
To disable the security function, repeat Step 1, and press INCREMENT
to toggle the bottom display setting to no. Press ENTER/STEP to save
the selection.
Select or deselect the
Password Security
option.

MC-II Flow Analyzer
12
Bypass Security Password
Forget your password? With the MC-II, you can have your access restored
quickly and easily with a one-time bypass code.
Press ACCESS + RESET
simultaneously to display
the bYPASS menu.
TOTAL
RATE
Call 1-800-654-3760 to
request a one-time
security bypass code.
To obtain this bypass code, perform the following steps:
1. Press and hold ACCESS and RESET simultaneously for 3 seconds,
then release. The word “bYPASS” will appear in the upper display,
and a number will appear in the lower display.
2. Record this number (it will remain on the display panel only for a few
seconds).
3. Call a Cameron (Measurement Systems Division) representative, and
give him/her the number and the serial number of the MC-II. After
verifying your identity, he/she will provide you with a one-time by-
pass code.
4. Enter the bypass code in place of your password at the CodE
prompt.
Important—Prior to exiting the Calibration menu, the CodE menu is
displayed again, and zeroes will appear in the bottom display. Select a
password using the INCREMENT key, and press ENTER/STEP to save
your password.
To re-enter a numerical calibration setting before you have selected
and saved the last digit, press and hold RESET for 3 seconds, then
release. The right-most digit will resume blinking, allowing you to
enter the entire number again.
To retain a numerical calibration setting and advance to the next
menu without pressing ENTER/STEP repeatedly, press and hold
ACCESS for 3 seconds, then release. This shortcut applies only to
numerical fields. You must press ENTER/STEP to select all other
entries.
If the MC-II is left in the Calibrate mode for longer than 1 minute, it
will time-out and return to the Run mode. Data that has been saved
with the ENTER/STEP key will be saved. However, data that was
selected but not entered will be lost.
Data Entry Tips
000000

MC-II Flow Analyzer
13
barrels
gallons
Recalibrating Your MC-II
If your MC-II was purchased as a system, it was calibrated at the factory
with its companion NuFlo turbine flowmeter. Verify the calibration set-
tings to ensure that no further calibration is required prior to use.
If you purchased a stand-alone MC-II without a flowmeter, the MC-II
must be calibrated before being operated.
The following information is needed to calibrate the MC-II:
•unit of measure for volume
•flowmeter calibration factor (in pulses per gallon)
•unit of measure for flow rate
The calibration procedure is explained in detail below.
1. Press and hold ACCESS for 3 seconds, then release, to enter Cali-
brate mode. Following a quick diagnostic test, Prog.no will appear
in the top display and the version number of the firmware will appear
in the bottom display for 1 to 2 seconds.
The tot.Eng menu will then appear in the top display. The factory
default volume unit - bbL - will appear in the bottom display.
IMPORTANT: If the pulse output option is in use, you must select
uSEr as the unit of measure for volume. Any other selection will
cause the pulse output to yield an incorrect number of pulses.
2. To select a unit of measure for volume: bbl, gal, m3, liter, or user-
defined, press INCREMENT repeatedly until the appropriate unit
of measure appears in the bottom display. Press ENTER/STEP to
accept the selection.
• If you select a preprogrammed unit, the Pu.P.gAL menu will ap-
pear in the top display, allowing you to enter the calibration factor
of your companion flowmeter. The MC-II will automatically
calculate the divisor. Proceed to Step 3 for further instruction.
• If uSEr is selected, Ent.diV will appear in the top display,
prompting you to enter a calculated divisor in terms of the unit
specifications. Enter the divisor, from right to left, using the IN-
CREMENT key to select each digit, and the ENTER/STEP key
to accept each digit selection. Then proceed to Step 4 for further
instruction. An example of MC-II calibration with user-defined
units is provided on page 20.
Press ACCESS to enter
Calibration mode.
TOTAL
RATE
Set unit of measure for
VOLUME.
Factory default setting is bbl.
cubic
meters
liters
user-defined
TOTAL
RATE
Enter the calculated divi-
sor for the user-defined
volume unit.
(Applicable only when
user-defined unit is se-
lected for volume.)

MC-II Flow Analyzer
14
Enter the Calibration
factor from your turbine
flowmeter.
(Applicable only when
preprogrammed unit is
selected for volume.)
Set unit of measure for
RATE.
Factory default setting is bpd.
3. Locate the calibration factor (pulses per gallon) of the turbine flow-
meter. This factor is typically recorded on a plastic tag attached to the
meter. Enter the number into the MC-II as follows:
a. Press DEC. POINT repeatedly to position your decimal point in
the proper position for your calibration factor.
b. Enter digits from right to left. The right-most digit willflash,
indicating the digit being changed.
c. Press INCREMENT repeatedly to advance the digits from 0 to
9, or press and hold INCREMENT to scroll through the digits to
make the appropriate selection. Then, press ENTER/STEP to
save it and advance to the next digit. Repeat this step to enter all
six digits.
d. If your calibration factor is less than six digits in length, enter 0
for each of the unused digits at the left.
When you have entered the last of the six digits and pressed ENTER/
STEP, the calibration factor will be saved in the MC-II’s memory
and the rAt.Eng menu will appear in the top display.
4. At the rAt.Eng prompt, select a unit of measure for rate:
•barrels per day (b.P.d)
•gallons per minute (g.P.nn)
•cubic meters per day (nn3.P.d)
•liters per minute (Lit.P.nn)
•<preselected volume unit> per day (PEr.dAY)
•<preselected volume unit> per hour (PEr.Hr)
•<preselected volume unit> per minute (Prnn in)
•<preselected volume unit> per second (PEr.SEC)
To select a unit of measure, press INCREMENT repeatedly until
the appropriate unit of measure appears in the bottom display. Press
ENTER/STEP.
If you selected a user-defined unit of measure for volume in Step 2,
your rate unit options will be per day, per hour, per minute, or per
second.
The PULSE menu will appear in the top display.

MC-II Flow Analyzer
15
5. Select or deselect the Pulse Output option. The default setting is OFF.
If your MC-II is not configured with the pulse output option, press
ENTER/STEP to accept the default setting, OFF, and proceed to
Step 6.
If your MC-II is configured with the pulse output option, you have the
option of leaving the option disabled (OFF), or entering a scale fac-
tor.
To enter a scale factor, press INCREMENT repeatedly to select
the volume increment that will cause a pulse output to occur. Press
ENTER/STEP to accept the selection. For instruction on choosing an
appropriate scale factor, see Appendices A and B.
The CodE menu will appear in the top display.
6. Enable/disable the password-protected security feature by accepting
the default no setting on the CodE menu, or by pressing
INCREMENT to toggle the setting to YES. Press ENTER/STEP to
save the setting. The bottom screen will change to a numerical data
entry field, prompting you to enter a numeric password of up to six
digits.
Note—Choose a number that is easily remembered. Record the pass-
word for future reference if necessary. You will be asked for it each
time you press ACCESS (to enter the Calibration mode) or RESET
(to reset the total). For more information on the password protection
security feature, see “Enable Password Security Option,” page 11.
Select or deselect the
Pulse Output option.
RATE
RATE
RATE
RATE
RATE
Select or deselect the
Password Security
option.

MC-II Flow Analyzer
16
Enable or disable the
Preset Total option.
7. The prompt SEt.tot will appear in the top display, and no (default
setting) will appear in the lower display.
a. If you do not need to preset a total, press ENTER/STEP to by-
pass this menu selection.
The prompt SAVing will appear in the lower display while the
calibration settings are saved to nonvolatile memory. The MC-II
will automatically return to the Run mode.
b. To preset a total, press INCREMENT to toggle the bottom
display from no to YES. Press ENTER/STEP to accept the
selection. A series of zeros will appear in the bottom display, and
the right-most digit will begin flashing, allowing you to enter a
total. Enter the digits for the preset value, right to left, by press-
ing INCREMENT repeatedly to select the appropriate digit,
then pressing ENTER/STEP to accept the selection. Repeat this
process for all digits. When the last digit has been entered and
ENTER/STEP is pressed, the calibration is complete.
The prompt SAVing will appear in the lower display while the
calibration settings are saved to nonvolatile memory. The MC-II
will automatically return to the Run mode and begin totalizing
volume beginning with the new preset total.
Important—If the unit of measure selected for the flow rate results in a
rate that contains too many digits to be displayed in the LCD window,
the MC-II will generate an overrun error. A prompt, oU run, will appear
in the bottom display. To correct this error, press and hold ACCESS for 3
seconds, then release, to reenter the Calibrate mode; then select a larger
unit of measure for the flow rate.
Example calibration procedures are provided on the following pages for
these basic applications:
•liquid measurement with preprogrammed units of measure (page 17)
•liquid measurement with user-defined units of measure (page 20)
•gas measurement (page 24)