5 Calibration method
In order to ensure the measurement accuracy, the instrument should be calibrated regularly and
strictly recorded during use.
Calibration equipments:
One bottle of calibration gas with known concentration (Note: The instrument defaults to full scale. In
principle, the selected calibration gas concentration should be greater than 50% of the range and less than
the range.);
Pressure reducing valve;
flow meter 0~1000ml/min;
PTFE tube;
Calibration cap, etc.
Note:
When the instrument leaves the factory, the alarm settings of the detector and the panel are
adjusted to the factory default values, and the user can adjust it through the remote controller according to
the situation.
Zero calibration
Make sure the instrument is in clean air environmrnt (do not do this in a non-clean air environment).
Note: After the zero point calibration, the instrument reading will automatically return to zero
(oxygen 20.93% VOL, nitrogen 78.1% VOL, carbon dioxide 450ppm).
Power on when ready.
External load application (low alarm for reference)
24V DC
SSR
(AC/DC)
220V/10A
External load
M
+
-
+
-
220V
(AC/DC)
Low
Alarm
Relay
High
Alarm
Relay
J2
COM
NO
Solid state relay
*
High alarm relay (Optional) .
10
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