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K400 Issue No. 1 49
Using a decade resistance box, generate the required value (to the Ref. Probe
connection on the electrical panel) and press ent. The microprocessor combines
the two values automatically. The nominal value is the value recommended for the
test.
• Calibration of the external Reference Probe (DBC-TS and DBC-TC)
By selecting the REF RTD from the calibration menu and pressing ent, a new
display opens to set all the parameters needed for the connected Reference RTD
(Tag number, R0 values, coefficients).
Move the cursor with the keys and set the value with the numeric key-pad. In
this way, a characterisation of the specific Reference Probe can be made. Press
ent to return to the calibration menu.
• Calibration of the internal dry well Sensor (DBC-TS and DBC-TC)
Note: Starting this procedure after at least 1 hour of warm-up, achieves a better
accuracy.
REF. RTD INPUT
Nominal value:
300
True value: 300.00
Reading: 298.50
Press ENT or CE ...
Ω
REF RTD
Tag:
R0: 100.00
A: 3.9080e-03
B: -5.8020e-07
C: -4.1830e-12
Ω
CALIBRATION
SET 1: 50.00
REF 1: 50.00
SET 2: 300.00
REF 2: 300.00
SET 3: 400.00