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A simple calibration may be made with the sensor open to static Ambient air.
For optimum accuracy Maxtec recommends that the Sensor be placed in a
closed loop circuit where gas flow is moving across the sensor in a controlled
manner.
2.3 Operation with Oxyknob Adapter (refer to figure below)
1. Attach the Oxyknob adaptor to the threaded sensor of your Maxtec
Analyzer.
2. Hand tighten until sensor o-ring seals against the Oxyknob.
3. Slowly crack open the tank. Listen for a slight hissing sound.
4. Hold the Oxyknob up to the outlet of the tank.
5. Align the small hole in the bottom or side of the Oxyknob to the hole in the
outlet of the tank.
6. Hold the analyzer in place untile the reading has stabilized on the analyzer
display. (about 15 seconds or less)
7. Remove Oxyknob after reading and close valve on the tank.
WARNING:
High gas pressures may cause damage to oxygen sensor and result in incor-
rect readings. Turn down the tank valve as much as possible to avoid sensor
damage.
Do not cover the larger holes on the Oxyknob.
Cold gas exiting a pressurized tank can cause the sensor reading to drift
if exposed for an extended period of time. Allow sensor to warm between
readings if necessary.
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