73
TN4FCXA2
j
-EDF-
E
Calibration procedure
(1) Perform the connections according to the diagram below.
(2) Calibration of the digital converter D/A:
(Refer to pages 32 and 33)
This menu must be used to modify the corresponding pressure values at zero and at 100%
of the output signal. It does not require a pressure generator.
(3) Calibration and modification of the zero and the range of measurement:
(Refer to pages 30, 31 and 34)
(4) Verification of the accuracy:
Apply the pressure in the following order: 0%, 25%, 50%, 75%, 100%, 75%, 50%, 25% and
0%, and read the output signal for each point.
Check that the read values (%) lie well within the accuracy specified below:
Type of
Values
Precision (depending on model)
measurement
Accuracy: 0.1%
Accuracy: 0.2%
Indication in %
0, 25, 50, 75, 100
±0.1
±0.2
Measure in current 4, 8, 12, 16, 20
±0.016
±0.032
(mA)
Voltage
measurement (V)
1, 2, 3, 4, 5
±0.004
±0.008
on resistance
of 250
Ω
To establish a circuit in conformity with a correct communication during the
use of the FXW, a load resistance of 250
Ω
minimum is necessary.
FXW
Digital
voltmeter
Power supply Load resistance
Standard resistance
INDICATION
