Probe Calibration - Presys T-500PIR Technical Manual

PRESYS
 Instruments

7.2 - Probe Calibration

The options of CAL>PROBE are:
ºC: Adjust of the internal temperature sensor (internal Probe).
RESTORE: Restores the internal temperature sensor calibration parameters to
the factory values.
To readjust the internal Probe it is necessary to compare the value indicated by
the calibrator (Probe) and the temperature value from an external probe placed in an
insert. The temperature of the external probe should have high accuracy and should be
measured by a superthermometer (ST).
The option to adjust the internal sensor has seven points of adjustment. These
points are recorded via keys 1 to 7.
Before starting the calibration (adjustment), record in these points the respective
initial storing values, according to the table below.
Go to the manual operating mode (menu EXEC) and generate all the seven
levels of temperature (set points from the table), writing down the value indicated by the
superthermometer (ST). Now, go back to the option Calibration/ Probe / ºC and record
the values indicated by the superthermometer.
Set point of the
temperature
to record (ºC)
generated (ºC)
50
125
200
275
350
425
500

ºC RESTORE
Initial value ST
indication
50.00 49.971
125.00 124.964
200.00 199.943
275.00 274.906
350.00 349.847
425.00 424.815
500.00 499.782
New
New value to
indication
record
of the ST
49.97 49.995
124.96 124.995
199.94 199.990
274.91 275.009
349.85 350.000
424.82 424.995
499.76 500.005
T-500PIR
key
key 1
key 2
key 3
key 4
key 5
key 6
key 7
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