Rosemount Electronic Remote Sensor 3051S2

Warning: This procedure requires trained personnel!

Is the pressure sensor within three percent of the true zero?

If not, perform a lower sensor trim instead of a zero trim.

Vent the PHI/PLO sensor to atmosphere.

Wait for the PHI/PLO pressure measurement to stabilize.

Using AMS Device Manager or a communication device, perform the zero trim function on the PHI/PLO sensor.

Sign off on the zero trim adjustment

Sensor trim is a two-point sensor calibration where lower and upper end-point pressures are applied and all readings are linearized between the two points.

Always perform a lower sensor trim first to establish the correct offset. The upper sensor trim provides a slope correction to the sensor characterization curve based on the lower sensor trim value.

Note: Use a pressure reference source that is at least three times more accurate than the actual transmitter sensor and allow the input pressure to stabilize for a minimum of 10 seconds prior to entering any values.

To perform a two-point sensor trim on the PHI or PLO sensor:

1. Launch the Lower Sensor Trim function using AMS Device Manager or a communication device.

2. Physically apply the desired low pressure value to the PHI/PLO sensor using a reference pressure device such as a high-accuracy dead-weight tester.

3. Wait for the PHI/PLO pressure measurement to stabilize.

4. When prompted by AMS Device Manager or the communication device, define the amount of pressure that was applied to the PHI/PLO sensor.

This section contains information on commissioning and operating a 3051S Electronic Remote Sensor (ERS) System.

Instructions for performing operation and maintenance functions are given for a communication device. For convenience, communication device Fast Key sequences are labeled “Fast Keys” for each software function below the appropriate headings.

Calibrating a Rosemount ERS System involves the following tasks:

1. Configure process variables.

See Basic setup for additional details on configuring the following:

NOTICE: To prevent damage to the SuperModule cable, remove the feature board or terminal block assembly with the connector before separating the SuperModule from the housing assembly.

Loosen the housing rotation set screw by one full turn with a 3/32-in. hex wrench.

Unscrew the housing from the SuperModule.

Sign off on the SuperModule removal

Warning: Ensure the power is off before starting the procedure

Rosemount 3051S ERS primary screws loosened

Rosemount 3051S ERS primary terminal block removed

3051S ERS secondary screws loosened

3051S ERS secondary terminal block removed

Sign off on the terminal block removal