Spectrasensors OXY5500 - OP-9 Sensor 1-Point Calibration Example

Oxygen Analyzer
4–20 4900002239 rev. G 7-11-17
1-Point Calibration of an OP-9 Sensor
Precondition: Sensor is connected and put in a low oxygen environment,
sensor constants are already set correctly (OP-9).
The goal for this example is to calibrate the oxygen sensor.
Table 4–19 Configuration for an analog output
Step Description Register(s) Value
1 Deactivate the current measure-
ment, otherwise the output may
generate false values.
5707, 5708 0 (Int32)
2 Set the Mode to “linear”. 4359, 4360 2 (Int32)
3 Set the Output to “oxygen”. 4363, 4364 1 (Int32)
4 Set the Error Level to “2mA”. 4389, 4390 2 (Int32)
5 Set the Low Level to “10.00”. 4377, 4378 10.00 (Float)
6 Set the High Level to “110.00”. 4381, 4382 110.00 (Float)
The oxygen value does not have to be set. This is done
automatically when setting the sensor type.
Table 4–20 1-Point calibration of a OP-9 sensor
Step Description Register(s) Value
1 Read the current measurement
values.
4899 to 4908 Refer to
Table 4–21.
2 Check if there are no errors, espe-
cially error bits 1, 2, 4, 5 and 6.
Refer to Table 4–10. Proceed only
when there are no errors present.
3 Set the calibration values cal0 and
T0.
5521 to 5524 1st Float: 66.32
2nd Float: 21.98