Calibration; Input Calibration - Presys T-500PIR Technical Manual

PRESYS
 Instruments

7.0 - Calibration

Warning: Enter the following options only after understanding them completely.
Otherwise, it may be necessary to return the instrument to the factory
for recalibration!
In this manual, Calibration means Adjustment.
Select CAL option from the main menu and press the ENTER key. You should
then enter the password (PASSWORD) 9875 to access the calibration menu.
The password functions as a protection to calibration ranges. After the
password is entered, the menu displays the options:
You should then choose the input range (IN) as the output range (OUT) is not
available for the user. DATE is an option which allows you to record the date on which
the calibration was performed and once it has been filled in, it will be displayed every
time the calibrator is turned on.
Options for IN calibration are:

7.1 - Input Calibration

Select the corresponding mnemonic and apply the signals presented in the
tables below.
When calibrating inputs, the display shows on the 2 nd line the value measured
by the calibrator and on the 1 st line the same value is expressed as a percentage.
Note that the applied signals just need to be close to the values shown in the
table.
Once the signal has been applied, store the values of the 1 st and 2 nd
calibration points, by pressing keys 1 (1 st point) and 2 (2 nd point).
mV Input
mA Input
Single range

IN OUT

mV mA
PROBE
1 st point
G4 0.000 mV
G3 0.000 mV
G2 0.000 mV
G1 600.000 mV
1 st point
0.0000 mA
DATE
OHM CJC
2 nd point
70.000 mV
120.000 mV
600.000 mV
2400.000 mV
2 nd point
20.0000 mA
T-500PIR
Page 17