Biocare PM-900, User Manual

Page: 99 / 182

Chapter 6 Parameter Monitoring
User Manual of Veterinary Monitor --87--
Warning

Incorrect zero calibration may cause inaccurate measured data.
6.8.6 Calibrate
Explanation

Despite being unnecessary for regular calibrations, the side-stream module needs calibrating once
a year or when the measured values have obviously deviated.

The main-stream module doesn
’t need calibrating.
The calibrator includes:
Standard CO
2
gas having a concentration of 6±0.5%, a T-joint and an airway.
Calibration Procedures:
1. Make sure that the side-stream CO
2
module has been started and warmed up.
2. Conduct airway check and leakage detection to make sure that airway is not leaking.
3. Set [Maintenance]-[User Maintain>>]-[CO
2
Maintenance>>].
4. Select [Zero] in the menu [CO
2
Maintenance].
5. Connect as shown in Figure 6.32 when zero calibration is successful.
Figure 6.32 Calibration Diagram
6. Open and regulate throttle valve switch until the flow indicated by the flowmeter is 10ml/min-50ml/min
and maintains stable.
7. Select a concentration equal to that of the introduced gases in the menu [CO
2
Maintenance].
8. The currently measured CO
2
concentration will be displayed in the menu [CO
2
Maintenance].Select
[Calibrate] to calibrate CO
2
module until the measured CO
2
concentration is stable.
9. The message ‗Calibrate Successfully‘ is displayed on the menu [CO
2
Maintenance] when the calibration
is successful, and ‗Calibrate Failure‘ is displayed when the calibration is not successful in which case
re-calibration is needed.