Chapter 6 ___________________________________________________ Calibration and Adjustment
JUMO _________________________________________________________________________ 137
CHAPTER 6
CALIBRATION AND ADJUSTMENT
The transmitter is fully calibrated and adjusted as shipped from
factory. Typical calibration interval is one year. Depending on the
application it may be good to make more frequent checks. Calibration
must be done always when there is a reason to believe that the device
is not within the accuracy specifications.
It is recommended that calibration and adjustment should be carried
out by JUMO.
Calibration and adjustment is carried out either by using the push-keys
on the motherboard, through the serial port or with the optional
display/keypad.
Opening and Closing the Adjustment Mode
1.
Open the transmitter cover. The buttons needed in adjustment
are on the left-hand side of the motherboard.
2.
If the chemical purge option is available, it should be carried out
always before calibration. To start chemical purge press
simultaneously two
PURGE
push-keys (on the motherboard)
for a few seconds. Red indicator led flashes with short pulses
until purge is complete (up to 6 minutes).
3.
Press the
ADJ
key to open the adjustment mode.
4.
Press the
ADJ
key again to close the adjustment mode.
