FLUID COMPONENTS INTL
CHAPTER 5 - TROUBLESHOOTING
Model ST98 Flow Meter
5 - 8
Doc. No. 06EN003291 Rev. A
Instrument Output Check
Alert:
If the mA output is being used on the flow transmitter, the receiver must have a resistance range
of 0 to 700 ohms, including the cable resistance.
To vary the output, follow the procedure below:
1.
Press [I] then [ENTER] on the FC88. "Enter #(0 01000)" will be displayed on the FC88. Press [0] for
minimum output or [500] for an output that is in the center of the range or [1000] for a maximum output.
2.
Check the receiver and verify that it agrees with what is being sent.
3.
When the above step is verified press [ENTER].
If the receiver is not responding to the signal being sent, remove the power from the instrument. Disconnect the
output cable (TS3) and connect a current meter to "mA OUT". Apply power to the instrument and go through the
[I] routine to check the output locally. If the mA output responds correctly then there is a problem with the cable
or receiver. If there is no response form the mA output, there may be a configuration error or the output circuit is
inoperative.
The voltage output option can also be checked with the [I] menu and can help solve problems with the 4-20 mA
output
Alert:
When finished with troubleshooting be sure that environmental seals are intact and properly
installed when securing enclosure lids. Damage resulting from moisture penetration of the Local
or Remote Enclosure is NOT covered by product warranty.
Spares
FCI recommends one of each of the following should be kept as a spare: One identically set up ST98 Flow meter.
Contact FCI for specific recommendations.
Figure 5-4. Decade Box Connections
