Instruction Manual

HMP230 SERIES
User's Guide M210225en-B
60
7.2. Temperature calibration
The temperature channel has been calibrated at the factory and since it is very
stable, calibration should be performed only when there is strong reason to
believe that the adjustments have changed.
Temperature calibration should be done against some accurate temperature
reference. It can be done either using the press switches inside the housing,
through the serial bus or the menus on the local display. Either a one point
offset correction or a two point calibration is possible.
7.2.1. One point offset correction
7.2.1.1. With serial commands
• Leave the reference instrument and the transmitter for at least 4 hours
in the same space so that their temperatures have time to equalize.
Remove the filter cap prior to calibration.
Disconnect the security lock jumper!
• Check the transmitter against the reference.
• Give command CT <cr>, enter the first point value and press <cr>:
>CT <cr>
T : xx.x Ref1 ? yy.y <cr>
Press any key when ready