By means of a hand pump, a defined amount of measuring gas is sucked into the test tube, which has a scale for reading the coloration or decoloration value. The measurement principle is suitable for dry and wet gases. Due to the quantization of the sucked gas amount, the standard measuring range can be made more or less sensitive by a factor of up to 10. Then, however, a limitation of the measurement accuracy has to be accepted.
+ Ambient air measurement
+ Emission measurement
+ Leak detection
Standard measuring range, type A: 0 – 1 ppm O3
Standard measuring range, type B: 0 – 300 ppm O3