Commissioning
Oxymax H COS21D
22
Hauser
4.
Calculate the calibration value
C
:
C = S
.
K
.
L
Example
• Air calibration at 18°C (64 °F), altitude 500 m (1650 ft) above sea level, air pressure 1009 hPa
(405 inH
2
O)
• S = 9.45 mg/l, K = 0.943, L = 0.996
Calibration value C = 8.88 mg/l.
!
Note!
You do not need factor K from the table if your device returns the absolute air pressure L
abs
(location-dependent air pressure) as the measured value.
Thus, the formula for calculation is: C = S
.
L
abs
.
6
Commissioning
6.1
Function check
Before first commissioning, check if:
• the sensor is correctly installed
• the electrical connection is correct.
If using an assembly with automatic cleaning, check the correct water connection at the
assembly rinse connection.
#
Warning!
Danger of medium leaking off
Before applying compressed air to an assembly with cleaning facility, make sure the connections
are correctly fitted. Otherwise, the assembly may not be insert into the process.
6.2
Polarization
The sensor was tested in the factory for perfect functionality and is supplied ready for operation.
To prepare for calibration, proceed as follows:
1.
Remove the sensor protective cap.
2.
Place the externally dry sensor in atmospheric air. The air should be saturated with water
vapour. Therefore, install the sensor as close to the water surface as possible. When
calibrating the sensor membrane, make sure the membrane remains dry. Therefore, avoid
any direct contact with the water surface.
