Emerson Model 1700 Manual De Usuario

•

Connect to the transmitter with the Field Communicator and read the value for Mass
Flow Rate

 in the Process Variables menu (On-Line Menu > Overview > Primary Purpose

Variables

).

If the reported mass flow rate is not accurate:

•

Check the characterization parameters.

•

Review the troubleshooting suggestions for flow measurement issues. See 

.

Verifying the zero helps you determine if the stored zero value is appropriate to your
installation, or if a field zero can improve measurement accuracy.

The zero verification procedure analyzes the Live Zero value under conditions of zero flow,
and compares it to the Zero Stability range for the sensor. If the average Live Zero value is
within a reasonable range, the zero value stored in the transmitter is valid. Performing a
field calibration will not improve measurement accuracy.

2.6.1

Verify the zero using ProLink II

Verifying the zero helps you determine if the stored zero value is appropriate to your
installation, or if a field zero can improve measurement accuracy.

In most cases, the factory zero is more accurate than the field zero. Do not zero the flowmeter unless
one of the following is true:

•

The zero is required by site procedures.

•

The stored zero value fails the zero verification procedure.

ProLink II v2.94 or later

Do not verify the zero or zero the flowmeter if a high-severity alarm is active. Correct the problem,
then verify the zero or zero the flowmeter. You may verify the zero or zero the flowmeter if a low-
severity alarm is active.

1.

Prepare the flowmeter:

a. Allow the flowmeter to warm up for at least 20 minutes after applying power.

Quick start

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