Three Button Operation With No Display Installed; Zero Adjustment; Span Adjustment - Honeywell ST 700 User Manual

5.5

Three Button Operation with no Display Installed

When there is no Display installed, the buttons can be used to perform a Zero or Span adjustment of
the ST 700 Standard Transmitter. Caution should be taken to insure these adjustments are only made
when the correct input pressures are applied.

5.5.1 Zero Adjustment

This adjustment is the same as performing a Set LRV using the Display.
1. Connect a current meter or voltmeter as shown in
Transmitter.
2. Using an accurate pressure source, apply pressure equivalent to the Transmitter LRV.
3. Press the Down (
4. Verify that the output is now 4 mA.

5.5.2 Span Adjustment

This adjustment is the same as performing a Set URV using the Display.
1. Connect a current meter or voltmeter as shown in
Transmitter.
2. Using an accurate pressure source, apply pressure equivalent to the desired Upper Range
Value of the transmitter.
3. Press the Down (
4. Verify that the PV output is now 20mA.
You can also use the MCT 202 Toolkit to make any adjustments to an ST 700 SmartLine
Pressure Transmitter. Alternately, certain adjustments are possible through an Experion
Station or Universal Station, if the ST 700 is digitally integrated with either of these stations.
Page 38
↓
) and Zero (  ) buttons together to set the Zero.
↓
) and Span ( ) buttons together to set the span.
ST 700 SmartLine Pressure Transmitters User's Manual
Figure 16 to monitor the PV output of the
Figure 16 to monitor the PV output of the
Revision 8.0