User Documentation

16
• Calibration
General
The LPD450F is factory calibrated. You should not have to recalibrate the
unit before installation.
Allow the instrument 15 minutes of powered operation (to reach a
stable temperature) before calibration. During calibration allow a few
seconds for signals to stabilise before accepting the value.
Equipment requirements
• A suitable 4-20 mA current source
Input calibration procedure
When the display shows Action/Description
Connect the current source to the inputs and set to 4.00 mA.
Put the run/calibrate switch in calibrate position, select setup mode.
CALb
Press P
CALn
Press Å
CALy
Press P three times
InH=
Set the current source to 20.00 mA
Press P three times
UPCn
Press Å
UPCy
Press P
QS61001054_LPD450F_Buch.indb 16 25.01.2008 15:57:35 Uhr