Onicon System-40-BAC BTU Manual de usuario descargar pdf (Pagina 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 ow signal is weak. It may

indicate entrained air in the ow 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 ow body is reading open.

The meter will not calculate energy in this state.

Flow RTD Short The temperature sensor in the ow 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 ow reading is below the minimum ow 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 ow reading is above the

maximum ow rate of the meter (e.g. 15 gpm for ½” meter).

Security Seals

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Onicon System-40-BAC BTU Manual de usuario Pagina 20