Honeywell ST 800 - Page 50

Page 40 ST 800 SmartLine Pressure Transmitters User’s Manual Revision 10
DAC Trim
Note: Loop
must be
removed
from
Automatic
Control
<Return>
Trim Zero
This selection will calibrate the loop zero
output to 4.000 mA
Connect a current meter to the transmitter to
monitor the loop output.
When you press Enter, the transmitter will set
the loop output to 4 mA. When the prompt
“Enter reading” appears, enter the value
shown on the current meter (in milliamps) and
press Enter again. The transmitter will adjust
the DAC output to 4mA.
Press  to enter
menu selection
Scroll to Trim Zero
or Trim Span
Press  to initiate
 and  to select
number.
 to enter and shift
to next digit
Trim Span
This selection will calibrate the loop span
output to 20.000 mA
Connect a current meter to the transmitter to
monitor the loop output.
When you press Enter, the transmitter will set
the loop output to 20 mA. When the prompt
“Enter reading” appears, enter the value
shown on the current meter (in milliamps) and
press Enter again. The transmitter will adjust
the DAC output to 20 mA.
Set DAC
Normal
This selection allows the loop to be returned
to its Normal mode (Automatic Control) after
performing the Trim operation.
Press  to enter
menu selection
Scroll to Set DAC
Normal
Press  to initiate
Loop Test
Note: Loop
must be
removed
from
Automatic
Control
<Return>
Set DAC
Output
This selection allows the user to force the
DAC output to any value between 3.8 and
20.8 mA.
Note: This selection will put the DAC into
Fixed Output Mode.
Press  to enter
menu selection
Scroll to Set DAC
Output
Press  to initiate
 and  to select
number.
 to enter and shift
to next digit
Set DAC
Normal
This selection allows the loop to be returned
to its Normal mode (Automatic Control) after
performing the Set DAC Output operation
Press  to enter
menu selection
Scroll to Set DAC
Normal
Press  to initiate
Factory Cal
<Return>
Active Cal Set
Displays the calibration used by the
transmitter.
Select Cal Set
<Return>
This selection
allows the user to
choose calibration
set from drop-down
menu,
Press  to enter
menu selection
Press
 and  to select
calibration type.
 to initiate
Cal Set A
Cal Set B*
Cal Set C**
Best Fit
NOTES:
* "Cal Set B" item in menu is available only if sensor supports Dual calibration