Calibrating Pressure - Honeywell ERX350 User Manual

5 User Access
5.2 Working with HMI
LIVE TEMP
Here, 75.20 is the value that ERX350 reads and F stands for the unit of temperature that is
Fahrenheit.
6. Press OK. The following appears on the display.
75.20
F
INPUT REFT
Here, REFT stands for reference temperature.
7. Enter the reference temperature (the temperature that ERX350 must read) by using the keypad and
then press OK.
The percentage difference between the temperature that ERX350 reads and the reference
temperature appears on the display. For example, the following appears.
0.04
% ERROR LIVE
TEMP
8. Press OK, the control returns back to the following: CALIB P/T
CALIB TEMP

5.2.6.2 Calibrating Pressure

To calibrate pressure:
1. Unlock the keypad and type the PASSCODE to enter level 3 mode. Refer to the section "Accessing
level 3 mode" for accessing level 3 mode.
2. By default, the following appears on the display.
MAIN MENU
ALARMS
3. Using the UP arrow and DOWN arrow scroll through the options in level 3 mode until CALIB P/T
appears.
4. Press OK. The following appears on the display.
CALIB P/T
Honeywell
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