Emerson ROSEMOUNT 5300 Installationsanleitung PDF herunterladen (Seite 23)

Quick Installation Guide

March 2013

Site acceptance

After the installation and configuration, proper operation of the transmitter

should be verified. A site acceptance test is therefore recommended. The proof

test outlined in this section can be used for this.

Operation and maintenance

The Rosemount 5300 Series Prior-Use option must be tested at regular intervals

to confirm that the overfill and empty tank protection function result in the

desired system response. The following proof test is recommended. If an error is

found in the safety functionality, the measuring system must be switched out of

service and the process held in a safe state by means of other measures.

Proof test results and corrective actions taken must be documented at

www.emersonprocess.com/rosemount/safety.

The required proof test intervals depend on the transmitter configuration and

process environment. Refer to the reference manual and the Failure Modes,

Effects, and Diagnostic Analysis (FMEDA) report for further information.

Proof test

This test detects approximately 95% of the possible Dangerous Undetected (DU)

failures of the transmitter including the sensor element, not detected by the

transmitter’s automatic diagnostics. See the Rosemount 5300 Reference Manual

(Document No. 00809-0100-4530) for additional details and instructions. Prior to

this test, the echo curve should be inspected to ensure that no disturbing echoes

affecting the measurement performance are present in the tank.

Required tools: Field Communicator and mA meter.

1. Bypass the logic solver or take other appropriate actions to avoid false trip.

2. Disable write protection if the function is enabled.

3. Using Loop Test, enter the mA value representing a high alarm current output.

Verify that the analog current reaches that value using the reference meter.

This step tests for compliance voltage problems, such as a low loop power supply

voltage or increased wiring resistance.

NOTE:

Use the Handheld HART Communicator: Fast Key Sequence [2, 4, 1, 4] to perform a Loop

Test. See the Rosemount 5300 Series Reference Manual (Document No. 00809-0100-4530)

for additional information.

4. Using Loop Test, enter the mA value representing a low alarm current output.

Verify that the analog current reaches that value using the reference meter.

This step tests for possible quiescent current related failures.

5. Perform a two-point calibration check of the transmitter by applying level to

two points on the probe within the measuring range

. Verify that the current

output corresponds to the level input values using a known reference

measurement.

This step verifies that the analog output is correct in the operating range and that

the Primary Variable is properly configured.

1) For best performance, use the 4 - 20 mA range points as calibration points.

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