Temperature Indicator: 409-4IN
REF NO: m47/om/201
Issue NO: 04
Page 24 of 34
Calibration for Retransmission
The calibration in the instrument is using front panel keys only. Instrument can be
calibrated even during installed condition.
Calibration is carried out using following steps.
1) Enter in to calibration mode usin
g front panel keys. Display indicates “CAl” in 4-
segment display.
2)
Press ‘MENU’ key to enter in to calibration for “RETZ” and “RETS”
3)
Display indicates “RETZ “for zero calibration; “RETS” for span calibration User can
enter in to zero/span calibration using UP, DOWN keys (applicable for both
voltage/current output).
4)
To perform zero calibration press DOWN key when display shows “RETZ“.
Retransmission output will be nearly equal to 0 V/0mA depending up on type of
selection. If output differs from 0V/0mA vary counts to get desire output.
5) Irrespective of value of count try to obtain 0V/0mA at the output and press ENTER
key to store calibrated value in memory.
Repeat the above same steps for span calibration here, desired voltage output is
10V and current output is 20mA.
Note
: calibration for voltage output is required to do in 0-10V range and for current
output its 0-20mA range, which incorporates other ranges also. In case of current
output specially to calibrate for zero side vary count in display such that output is
greater than zero mA and then bring it down by varying counts it to zero mA.
