Model 2180A
18
To apply gas using Breaker Bottles and Ampoules
1. Remove cap and flush breaker bottle with fresh air.
2. Insert one ampoule into the ampoule holder. Replace the cap.
3. Place cap over the sensor and rotate bottle for a tight fit.
4. Turn knob clockwise until ampoule breaks.
5. Allow the sensor to see the gas for 1 to 2 minutes.
3.5.1.2 Portable Purge Calibrator
An alternate method for introducing calibration or test gas to the Model 2180A is
available. The H
2
S Portable Purge Calibrator is a compact, practical, accurate, and safe
system for field calibration of H
2
S sensors. The bottle is filled with a hydrogen sulfide
(H
2
S) in air mixture and is available in 7 concentrations. The temperature limitation for
operation and storage is 0°F to +130°F (-18°C to +54°C). Make sure the Model 2180A
has had power applied for at least 24 hours to ensure that the metal oxide film of the
sensor has stabilized. Make sure the sensor is seeing clean air.
Figure 7: Portable Purge Calibrator
To use the Portable Purge Calibrator
1. Place the calibration cup over the sensor.
2. Apply the gas by opening the ON/OFF valve on the cylinder.
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