When you want to know if your sensor is responding a bump test is a great option. This is simply a test that exposes the sensor to the specific gas it is intended to measure and ensure that the sensor does indeed respond. While not a precise process, this does ensure that the sensor is indeed responding and can respond in a critical situation where human safety is critical.
ATI offers an Auto-Test generator for many of the sensors used on the D12 and F12 monitors. This auto-test generator will produce a gas that cause the proper sensor to react. A test is run on a pre-set schedule, if the gas sensor does not respond as expected an alarm will come on indicating the sensor has failed. This is a great option for gas sensing is critical applications.
Note: A bump-test is not an acceptable replacement for sensor calibration
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