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Firmware
Protocol
Model Key
4.2.7 Selecting a new setting from a list of choices
Use the procedure described below to select a new setting for parameters that present a list of choices
(e.g., PV Display, Pressure Units, etc.)
1. Press
to begin the edit process. The Basic Display will show the current setting of the item
on the lower line, left justified.
2. Press the or buttons to scroll through the list of choices.
3. Press
to make your selection. The new selection will be stored in the transmitter and
displayed on the lower line, right justified.
4.3 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 Transmitter. Caution should be taken to insure these adjustments are only made when the correct
input pressures are applied.
4.3.1 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 Figure 16 to monitor the PV output of the
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.
4.3.2 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 Figure 16 to monitor the PV output of the
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 20 mA.
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Display
Electronics
Meterbody
HART
DE
FF
↓
) and Zero ( ) buttons together to set the Zero.
↓
) and Span ( ) buttons together to set the span.
ST 800 SmartLine Pressure Transmitters User's Manual
Menu item shows the current
Firmware versions of the Display,
Electronics Module and the
Meterbody
Menu item shows the
communications protocol
Identifies the type and range of the
transmitter
Read Only
Parameter
Read Only
Parameter
Revision 10
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