PT395 Series Detector
Table 2. Recommended Calibration Gas for Target Sensor
A zero air cylinder (20.9 % Vol oxygen) should be used to perform the zero calibration
if the ambient air is contaminated with target gas in the area where the
detector is located.
In case of Oxygen sensor if the oxygen level around the sensor is not 20.9%
then zero air must be applied to set zero calibration of the sensor.
Target Gas Recommended Calibration gas
50 ppm H2S Balanced in Air
Carbon Monoxide 50 ppm CO balanced in Air
Sulfur Dioxide 25 ppm SO2 Balanced in Air
Ammonia 25 ppm Ammonia balanced in Air
Oxygen Deficiency Pure Nitrogen
Hydrogen 100 ppm Hydrogen balanced in Air
Hydrogen Chloride 50 ppm HCL balanced in air
Nitric Oxide 50 ppm NO balanced in air
Nitrogen Dioxide 10 ppm NO2 balanced in air
Chlorine 5 ppm CL2 air balanced
0.5 to 1.5 LPM
Flow
Regulator
7. . Sensor Calibration using Flow regulator and adapter
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