15
Reference Manual
00809-0100-4108, Rev CA
Configuration
March 2017
Configuration
Figure 2-10. Rerange with Applied Pressure Using LOI
Rerange with an applied pressure source using local zero and span
buttons
If ordered, local zero and span buttons (option code D4) can be used to rerange the
transmitter with an applied pressure. Refer to Figure 2-11 on page 16 for analog zero and
span button location.
To rerange the transmitter using the span and zero buttons, perform the following
procedure:
1. Loosen the screw holding the top tag of the transmitter housing. Rotate the label to
expose the zero and span buttons.
2. Confirm device has local zero and span buttons by verifying blue retainer under the tag.
3. Apply transmitter pressure.
4. Rerange the transmitter.
a. To change the zero (4 mA/1 V point) while maintaining the span: press and hold zero
button for at least two seconds then release.
b. To change the span (20 mA/5 V point) while maintaining the zero point: press and
hold the span button for at least two seconds and then release.
Note
4 mA and 20 mA points must maintain the minimum span defined in Appendix A:
Specifications and reference data.
RERANGE
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