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Triton tritium gas monitor model 111


The Triton Model 111 detects, monitors, and measures tritium in air. Many other radioactive gases may also be monitored and measured. A calibration scale factor must be used for each new gas, since the instrument is only calibrated for tritium.
The option of open and closed-loop operation enables monitoring and analysis of controlled environments, such as glove boxes and environmental chambers. The monitor alarm contains an adjustable threshold for visual and audible alarm signals as well as a separate reset or acknowledge switch for the audible alarm indicator.
The Triton 111 is gamma compensated. The unit contains four ion chambers. The sample air is drawn through two ion chambers to measure the tritium. Two additional ion chambers measure the external gamma radiation. Other types of tritium monitor are often referred to as gamma compensated, when in fact the instrument has only been re-zeroed to subtract out the gamma contribution. The gamma background is then assumed not to change over time.
The Triton 111 is the only model discussed which is truly gamma compensated, and should not be confused with the Triton 110 which looks similar but is not gamma compensated.
Radiation measured: HT and HTO (low energy beta)
Background: the Triton 111 is gamma compensated for external gamma
radiation. Internal alphas, betas and gammas from radioactive gases are
Detectors: gamma compensated ion chambers
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Triton tritium gas monitor model 111 Triton tritium gas monitor model 111 Triton tritium gas monitor model 111 Triton tritium gas monitor model 111 Triton tritium gas monitor model 111