
IM-P505-02-US
Issue 1
56
UTM20 Series Ultrasonic Transit-time Flowmeters
10.9.2 Field Calibration Procedure
To calibrate the UTM20 flow meter, use a master meter or gravimetric test stand
1
Verify that FACTOR MODE is set to FIELD and the transducer sensor factor is entered into the
SENSOR FACTOR setting
2
Set SCALE FACTOR set to 1
3
Run calibration test
4
Calculate the SCALE FACTOR
SCALE FACTOR = (actual flow)/(meter flow rate) or (actual total)/(meter total)
5
Enter the SCALE FACTOR
10.10 Setup > Input/Output > Current #1 (or Current #2)
Requires service level passcode or higher if security is enabled The current output, reset input and
frequency/pulse/status output can be set up through the SETUP > INPUT/OUTPUT menus
An asterisk (*) indicates the parameter default
Current #1 Submenus
Options/Descriptions
OUTPUT SOURCE
*FLOW RATE
TEMPERATURE #1
TEMPERATURE #2
ENERGY FLOW
VELOCITY
SIGNAL STRENGTH
TEST MODE
DISABLED
Select the reading to be assigned to the 4 to 20 mA
output Temperature and energy options only available
with energy meter
RANGE
*4-20 mA
4-20 mA NAMUR
0-20 mA
Current range is NAMUR 43 compliant with lower
measuring limit at 3 8 mA and upper limit at 20 5 mA and
minimum alarm 3 5 mA and maximum alarm 22 6 mA
MIN VALUE
Enter the value of the reading at 4 mA Can also be the setting for the 0 mA setpoint
when 4-20 mA RANGE is selected Units and decimal places based on parameter
selected Negative numbers accepted
MAX VALUE
Enter the value of the reading at 20 mA Units and decimal places based on
parameter selected Negative numbers accepted
FAILURE MODE
*MIN CURRENT
MAX CURRENT
LAST VALUE TEST
CURRENT
When an Fxx error occurs, such as low signal strength,
the transmitter will set the current output the selected
value
FIXED VALUE
Enter the value for the current output when there is a failure mode This parameter
is only displayed with FAILURE MODE is set to FIXED VALUE
TEST CURRENT
Available only when OUTPUT SOURCE is in TEST MODE Default 12 00 mA To
check the wiring to the control system or gauge, you can override the current
output with a fixed current Numeric entry mA 0 to 22 mA
TRIM 4 mA
Available only when OUTPUT SOURCE is in TEST MODE Set the test current to
4 mA or 0 mA, depending on the current range selected Adjusts output until PLC/
DCS/BAS reads the desired value
TRIM 20 mA
Available only when OUTPUT SOURCE is in TEST MODE Set the test current to 20
mA Adjusts output until PLC/DCS/BAS reads 20 mA