Calibration Procedure - Honeywell HART STT700 Safety Manual

Calibration procedure

The transmitter should be taken out of service. The source for the input Temperature must be very
precise, and certified for correct operation.
Step
1 Connect the HART host and establish the communications.
2 Go to Online > Device Setup > Advanced Configuration > Calibration > Calibration Methods menu.
Go to "D/A trim"
3
Message "Warn loop should be removed from automatic control" will appear. Press "Ok".
4
Message "Connect reference meter" will appear. Connect the reference meter and press "Ok".
5
Message "Setting fld device output to 4mA" will appear. Press "Ok". Message "Enter meter value
6
(4,000mA)" will appear with a textbox to enter actual value observed on meter. Enter the actual
value and press "Enter".
Message "Fld dev output 4,000mA equal to reference meter?" will appear with Yes/No selection.
7
Select "Yes" and "Enter".
Message "Setting field device output to 20mA" will appear. Press "Ok".
8
Message "Fld dev output 20,000mA equal to reference meter?" will appear with Yes/No selection.
9
Select "Yes" and "Enter".
Message "Returning fld dev to original output" will appear. Press "Ok".
10
Now Double click "URV Correct" method
11
Message "WARN-Loop should be removed from automatic control" will appear. Press "Ok".
12
Message "Please enter calibration date" will appear. Enter the current date and press "Ok".
13
1.
Message "Please enter current calibration time in 24 hr clock format (hour field)" will appear.
14
Enter the current time hour and press "Ok".
Message "please enter current calibration time (min field)" will appear. Enter the current time
15
minutes and press "Ok".
Message "Apply URV Temperature" will appear.
16
Adjust the PV input to the required URV value. Press "Ok".
17
Message "Press ok when Temperature is stable" will appear. Press "Ok"
18
19 The correct URV operation will happen.
Message "Loop may be returned to automatic control" will appear. Press "Ok".
20
Follow the same procedure for "Correct LRV" (replace URV in above procedure by LRV) and
21
"Correct LRV" operation will get executed.
6
Action
STT700 Safety Manual June 2017