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Operate
November 2020
3.6
Fault conditions
The Net Safety ST3 sensor provides a number of fault conditions that the Net Safety
Millennium II transmitter translates into an analog or fault relay output. These fault
conditions are outlined in
Table 3-1: Fault Conditions
Fault condition
Sensor zero drift
Memory fault
Sensor nearing end of life
Calibrate sensor
22
Table
3-1.
Analog output
2.5 mA
2.5 mA
Alternating 2.5 mA for 10
seconds and normal level for 50
seconds
2.5 mA
Reference Manual
00809-0100-4303
Fault relay output
Fault
Fault
Alternating 2.5 mA for 10
seconds and normal level for 50
seconds
Fault
Emerson.com/FlameGasDetection
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