Meriam M2110F SMART FLOW GAUGE - Manual (Page 16)

16
8 ENGINEERING UNITS
The Engineering units are modified as part of the P9: B-Coefficient/Flow Constant editing process. The purpose of
this dependency is to require the user to enter the required unit scaling prior to selecting the engineering units. Note
that the P10: C-Coefficient value may also need to be entered to provide proper scaling to the units selected.
The following engineering units are available on the M2110F Flow Gauge:
1. Gallons /Minute or /Hour
2. Pounds /Minute or /Hour
3. Cubic Feet /Minute or /Hour
4. Liters
/Minute or /Hour
5. Percent /Minute or /Hour
6. Kilograms /Minute or /Hour
7. Cubic Meters/Minute or /Hour
8. InH
2
O Units 1 –Sensor differential pressure
9. User Units 2 –User Defined Units
Notes:
[1] When InH
2
O units are selected the P9: B-Coefficient/Flow Constant and P10: C-Coefficients are not applicable
to the display scaling. The InH
2
O display data is a direct read of the pressure sensor with the applied P3 related
temperature compensation.
[2] The menu selection indicated by all units flashing and is considered the USER UNITS selection. In measure
mode, indication that the USER UNITS are selected is shown by the absence of all unit indictors.
8.1 CHANGING ENGINEERING UNITS
The user should only change the engineering units at the time of setup and calibration. The engineering unit display
value is a direct function of the measurement model P3, and the scaling coefficients that are entered into the P9 and
P10 register values.
GAUGE IN MEASURE MODE
1. Press PRGM/ENTER to access P0 prompt
• If lockout is in-active prompt will be P0
• Increment P# using UP or DOWN ARROW until P9 is displayed
• If lockout is active prompt will be L 00 with first digit flashing
• Enter Lockout Code
• Increment P# using UP or DOWN ARROW until P9 is displayed
2. When P9 is displayed press PRGM/ENTER to access P9 value
• Modify the P9 decimal value used for the mantissa of the scaler
• Press PRGM/ENTER when finished modifying value
• Modify the P9 decimal value used for the exponent of the scaler
• Press PRGM/ENTER when finished modifying value
• The current engineering units will now be flashing
• Use the UP/DOWN ARROWS to select the new engineering units
• Press PRGM/ENTER after selecting the new units
• Press ON/OFF to return to MEASURE MODE