3
Calibration
The output of the Differential Voltage sensor is linear with respect to the input
voltage. To collect data you can:
1.
Use the calibration supplied by the sensor EEPROM memory.
2.
Use the calibration supplied in the standard sensor library of the Coach program.
3.
Calibrate the sensor using known voltages (a standard, simple 2-point calibration
can be done). User calibration can be performed in the Coach software.
The name of the Differential Voltage sensor in the sensor library of the Coach
program is
Voltage sensor (differential) (0210i) (CMA) (-10 ..10 V)
.
Figure 2.
Default calibration graph of the
Differential Voltage Sensor (used in the
Coach sensor library and in the sensor
memory).
V
in
(V)= 1.616 * V
out
(V) - 0.0081
where V
in
= V
+
- V
-
Default linear calibration coefficients:
a=1.616; b=-0.0081
