ONICON System-40-BAC BTU - Manual (Page 20)

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System-40-BAC BTU Meter Manual 03/15 - 1045-2 Page 20
4.3 SEALING THE METER
Once commissioning is complete install the two security seals provided with the meter
as shown below.
5.0: DIAGNOSTIC FUNCTIONS
The ONICON System-40 has self diagnostic functions that continually monitor key
operating parameters. A list of the alarm messages is shown below.
Displayed Message Description
System Fault System Fault is displayed with an error code. This message
indicates a hardware malfunction. The meter will not
calculate energy in this state.
Reverse Flow Flow is reversed through the meter. The meter will not
calculate energy in this state.
Signal Fault This is a warning message that the flow signal is weak. It may
indicate entrained air in the flow stream.
Dt< Minimum This is a warning message that the delta temperature is low.
Empty Pipe The pipe is empty.
Flow RTD Open The temperature sensor in the flow body is reading open.
The meter will not calculate energy in this state.
Flow RTD Short The temperature sensor in the flow body is reading as a short
circuit. The meter will not calculate energy in this state.
Remote RTD Open The remote temperature sensor is reading open. The meter
will not calculate energy in this state.
Remote RTD Short The remote temperature sensor is reading as a short circuit.
The meter will not calculate energy in this state.
Low Flow The flow reading is below the minimum flow threshold of
the meter (e.g. 0.03 gpm for ½” meter). The meter will not
calculate energy in this state.
High Flow This is a warning message that the flow reading is above the
maximum flow rate of the meter (e.g. 15 gpm for ½” meter).
Security Seals