Calibration - JUMO 404304 Operating Instructions Manual

7 Calibration

Required
aids
Setup
Calibrating
14
Only adjust the instrument potentiometers listed in the instructions
below! The other potentiometers are factory-set and must not be
adjusted!
- pressure generator
- reference pressure measuring device
- supply for pressure /differential pressure transmitter
- voltmeter/ammeter (multimeter)
Open instrument
Connect supply voltage
Connect multimeter
Wait for instrument to warm up (approx. 1 hour).
Set zero:
With open pressure connections, set display value of multimeter to 0 V
(with current output to 0(4) mA) by using the potentiometer TP1.
Set nominal pressure:
Apply nominal pressure to instrument at the "+" pressure connection.
Using the potentiometer TP2, set display value of multimeter to 10 V
(to 20 mA with current output).
"Opening the instrument", page 11.
"Connection", page 12ff.
"Connection", page 12ff.