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Installation and Use Manual 39

Initial Transmitter Startup Procedures

ProLink II Setup Transmitter StartupUsing ProLink IIBefore You Begin ProLink II Setup Transmitter StartupUsing ProLink IIBefore You Begin ProLink II Setup Transmitter StartupUsing ProLink IIBefore You Begin ProLink II Setup Transmitter StartupUsing ProLink IIBefore You Begin

Note the following:

• If you have two mA outputs, you should trim both.

• You must trim the output at both the 4 mA and 20 mA points to ensure appropriate

compensation across the entire output range.

• If you are trimming the primary mA output, and you are connected to the transmitter via the

primary mA output (HART/Bell 202), the communication signal to ProLink II will affect the

reading. Disconnect ProLink II before reading the output, then reconnect and resume the trim,

after taking the reading. If you are using any other protocol, this is not required.

• Any trimming performed on the output should not exceed ±200 microamps. If more trimming

is required, contact Micro Motion customer support.

To trim mA outputs, choose

ProLink > Calibration > Milliamp 1 Trim or ProLink > Calibration >

Milliamp 1 Trim

. You can also initiate mA trim from the Commissioning Wizard:

1. Choose

Tools > Commissioning Wizard.

2. Click

Task 6: Trim mA outputs.

3. Click

Next.

Figure 4-2 Milliamp trim wizard – Screen 1

This screen allows you to compare the transmitter output (the

Present Output value) to the

output level being received at an external device.

4. Read the mA output level at the receiving device.

5. Type the value that you read at the receiving device in the

Enter Meas box.

6. Click

Next. At this point, the transmitter trims the milliamp output and displays the adjusted

output in the following screen:

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 95 96

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