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Detector Tubes
  • Disadvantages - Accuracy of ± 25% under ideal conditions. Must use hand pump (or electronic pump - RAE) and wait for reaction to take place. Can’t do continuous monitoring or sampling. TPT* dependence.
  • Examples of Tubes Vendors: Dräger Safety, Kitegawa (Matheson), Sensidyne


* TPT - Temperature Pressure Time - Detector tubes are dependent on the temperature of the sample, the air pressure (barometric) of the surrounding environment and the sample, and the sampling times. Consideration or corrections must be given to these variables to assure accurate results.

 
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