Fluid Components International GF03 - Manual (Page 50)

FLUID COMPONENTS INTERNATIONAL LLC http://www.fluidcomponents.com
Model GF03 Flow Meter 4 6 Doc. No. 06EN003352 Rev. B
Figure 27 - Decade Box Connections
4. Set the reference decade box to 1000 ohms, depending on type of nominal flow element
resistance.
5. Set the active decade to the same reading as step 3, plus the
∆
R value from the
∆
R table
(i.e. 1000 ohms + 25 ohms = 1025 ohms).
6. For current loop outputs, connect the milliamp meter between the +I OUT (positive lead)
and OUT COM (negative lead) on connector terminal JP6 and select a range appropriate
for your output current. For the voltage output signals, connect a DMM across the
+E OUT and OUT COM on connector terminal JP6.
7. Turn power ON and allow the instrument 10 minutes to stabilize.
8. Be sure the flow transmitter is in the correct group.
9. Increase the decade resistance connected to the active terminal by the value shown in the
∆
R column for the low-limit signal. Set the active decade for a resistance of 1000 ohm
+ the
∆
R value. The meter reading should equal the recorded value within
±
1% of the
full signal range.
Example: 4-20 milliampere Output Signal = 1% of 16 milliampere = 0.16 milliampere =
Tolerance.
10. Repeat step 7 for the other flow rates in the Delta R Table for this flowmeter.
11. Compare results of the verification measurements with the output signal values recorded
on the Delta R Data Sheet to determine if the transmitter is functioning properly. Also
verify the display reading matches.
12. Turn power OFF and disconnect the decade resistors. Connect the proper wires from the
flow element to terminal block.
13. Disconnect the milliamp meter. Connect the output load to the appropriate OUT+ and
OUT COM terminals on the lower (I/O/P) board.
14. Close the enclosure, making sure that none of the wires are caught. Ensure that all seals
and gaskets are properly installed. If a custom enclosure exists, be sure it is placed back
into safe operating condition.
If the readings are good, the flow transmitter is good and problem may involve the flow
element. If readings are off, a flow element calibration may be required or the flow transmitter
needs to be setup.