Emerson Process Management 1500 manual 1 ProLink II – Loop test procedure, Before You Begin

Flowmeter Startup

Figure 3-1ProLink II – Loop test procedure

ProLink Menu

Test

Before You Begin

Fix Milliamp 1

Enter mA value

Fix mA

Read output at receiving device

Correct?

Fix Discrete Out 1 Fix Discrete Out 2

ON or OFF

Verify state at

receiving device

Correct?

Read Discrete Input

Toggle remote input

device

Verify Present State LED

at transmitter

Correct?

Using ProLink II

YesNo

Loop test successful	Check output wiring
UnFix	Troubleshoot receiving device

	Yes	No
Loop test successful		Check input wiring
		Troubleshoot input device

3.4Trimming the milliamp output

Trimming the mA output creates a common measurement range between the transmitter and the device that receives the mA output. For example, a transmitter might send a 4 mA signal that the receiving device reports incorrectly as 3.8 mA. If the transmitter output is trimmed correctly, it will send a signal appropriately compensated to ensure that the receiving device actually indicates a 4 mA signal.

You must trim the mA output at both the 4 mA and 20 mA points to ensure appropriate compensation across the entire output range.

ProLink II is used to trim the mA output. See Figure 3-2for the mA output trim procedure. Note the following:

•Any trimming performed on the output should not exceed ± 200 microamps. If more trimming is required, contact Micro Motion customer support.

Flowmeter Startup

Required Configuration

Configuration and Use Manual 11