CTX 300
ANALOGIC GAS DETECTOR
USER MANUAL
14
NP300GB
Revision O.0
Figure 15: sensor calibration assembly.
Zero adjustment should be performed in a gas and vapor free area. If this is not possible, synthetic
bottled air can be injected at a rate of 60 l/h.
Use a bottle of test gas to adjust sensor sensitivity (concentration close to the alarm threshold or
corresponding to 30% of the measurement range at a minimum). The recommended rate is 60
l/h.
Note: when dealing with dangerous gases, you MUST consult a specialized
TELEDYNE
OLDHAM SIMTRONICS technician or use another sensor pack recently pre-calibrated at a
factory.
The detector should be calibrated using the intended flow-rate. The actual
concentration of gas may be underestimated if the detector was calibrated with too
high of a flow rate.
5.1.2
CTX 300 calibration
5.1.2.1
1st case: CTX 300 with display (excluding O2)
•
The sensor is operating: the green light (ref. 1) is lit and
the display screen shows the measurement level.
Figure 16
•
Verify that the sensor is located in a clean-air
environment. If not, inject synthetic air at a flow rate of
30 l/h.
Figure 17
•
Wait for the measurement to stabilize (displayed on
screen) and adjust the zero by using the ZERO
potentiometer located on the sensor pack (ref. 2).
•
Inject the recommended calibration gas at a flow rate
of 30 l/h.
•
Wait for the measurement to stabilize.
Summary of Contents for CTX 300
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