FCI ST80 Series - Table 31 - Instrument Power Supply Voltages

TROUBLESHOOTING ST80/ST80L Flow Meter
84 Fluid Components International LLC
Transmitter Power Supply
Use the ST80/ST80L configuration software to check the power supply voltages. Refer to ST80/ST80L Configuration Software manual
06EN003491 for details. Select the Factory branch from the menu tree on the window's left side. Select the SIL Adj tab. The screen shows
power supply voltage readings for +24 VDC and +5 VDC. Check that the displayed values are within range as listed in Table 31 below.
Table 31 – Instrument Power Supply Voltages
Power Supply Voltage
Acceptable Voltage Range
Digital 5 VDC
+4.75 V to +5.25 V
Analog 24 VDC
+23.75 V to +24.25 V
If the voltage measurements are within the range shown in the table, the power supply is functioning properly.