FCI ST100A Series, Installation, Operation And Maintenance Manual

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TROUBLESHOOTING ST100A Series Flow Meter
100 Fluid Components International LLC
6. Verify the transmitter is in the calibration group matching the Delta R data sheet.
7. On the FES-200, dial in a Delta R value with the thumbwheel from the column marked Delta R (ohms) on the Delta R data sheet. Compare to
the output value column (VDC Across 250 Ohms or mA Output as applicable) or the Indicated Display column or both. Verify that the meter
reading is within the stated tolerance of the flow transmitter. See examples 1, 2 and 3 at the end of this section, as applicable.
8. Repeat for each point on the Delta R table, except for the step value and zero value.
9. Turn power OFF and disconnect the FES-200 and DMM. Reconnect the sensor element connector.
10. Close the enclosure, making sure none of the wires are strained. Ensure any seals and gaskets are properly installed.
11. Restore power to the meter.
If you are troubleshooting the flow meter and the readings are good, the flow transmitter is good and the problem may involve the flow
element or interconnecting cable. If the readings are off, a flow element calibration may be required or the flow transmitter needs to be
setup. Contact FCI Customer Service.
Figure 72 – Connecting FES-200 to ST100A Series Transmitter
REMOTE ELECTRONICS
FES-200 CABLE
FOR ST100A
TP1 HEATER
CURRENT
THUMBWHEEL
SWITCHES
FES-200
FLOW ELEMENT
SIMULATOR
Figure 73 – ST100A Series Decade Box Wiring
Reference Sensor
Active Sensor
1 HTR EXC #1
2 HTR RTN
3 ACT EXC
4 ACT SEN
5 GND SEN
6 GND/SHIELD
7 REF EXC
8 REF SEN
9 SHIELD
TB1 (& TB2 For Dual Point Models)
10 W
C01426-1-1