Emerson 3051S Specifikace stáhnout pdf (Strana 109)

Reference Manual

00809-0100-4803, Rev DA

Section 4: Operation and Maintenance

April 2013

Operation and Maintenance

Analog output loop test

Under the Analog Output Verify heading, a loop test can be performed by clicking the Loop Test

button. The loop test command verifies the output of the transmitter, the integrity of the loop,

and the operations of any recorders or similar devices installed in the loop.

Analog output diagnostic alerts

Two diagnostic alerts are shown under the Diagnostics heading.

The first is mA Ouput Fixed. This alerts the user that the 4-20 mA analog output signal is fixed at a

constant value and is not representative of the HART Primary Variable. This diagnostic alert may

also be triggered if “Loop Current Mode” is disabled, the device is in alarm, or if “Test

Calculation” is running.

The second diagnostic is mA Output Saturated. This alerts the user that the measured Primary

Variable has exceeded the range points defined for the 4-20 mA analog output signal. The

analog output is fixed at the user-defined high or low saturation point and is not representative

of the current HART Primary Variable.

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Emerson 3051S Specifikace Strana 109