25
9.2.1.2
Calibration
Press on Calibration icon
to enter in the Calibration Menu, as shown in Figure 30.
a
b
Figure 30. How to reach the Sensor Calibration Submenu (a
–
b).
Note
►
Okolab recommends the calibration of O2 Sensor every three weeks.
Note
►
Okolab recommends the calibration of CO2 Sensor every year.
9.2.1.2.1
Offset (with exthernal meter)
Press on
Offset
icon
to calibrate the instrument by an external CO2/O2 meter (NOT provided).
Figure 31. How to enter a gas offset calibration.
Please make sure that the external Gas meter used is accurate and calibrated in the range near
your desired setpoint.
To run the gas sensor calibration using an external gas meter, follow the indications below:
1.
It is necessary to attach the external gas meter to the connector “Gas Output” on the rear of the CO2
-O2 Unit-
BL [0-10; 0-1] (see Figure 30). If the TUBE-C is not suitable for the external meter you use, disconnect it from
the
“Gas Output” connector, remove it by keeping pushed the
red ring of this connector.