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Tenmars TM-91 Radiation Monitor


The TM-91 Radiation Monitor is a survey meter measuring the beta, gamma and x-ray radiation. It is useful in monitoring the environment, home safety, nuclear, medical, mining and metal industries. It is also ideal for border control, customs and cargo inspections.


  • Built-in GM tube.
  • The values in µ Sv/h, µ Rem/h or mRemh are displayed on LCD screen
  • Quick response to the radiation strength of Beta and Gamma ray.
  • Auto ranging.
  • Alarm settings.
  • Automatic detection, easy setting.
  • Low battery indication.
  • Bright LCD display for night or day operation.
  • A beeper chirps with each radiation count.
  • Audio alarm set function.

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SKU: TENMARS TM-91 Categories: , Tags: ,
Display 3-1/2 digit LCD
Measuring Range 0.05 µSv/h – 19.9 µSv/h
5 µRem/h – 199.9 µRem/h
Resolution 0.01 µSv/h
1 µRem/h
Test Radiation ẞ – radiation and y – radiation
Energy Dependency 0.1 to 1.25 Mev
Accuracy ±15% of reading
Operating Temperature/Humidity 0°C to 50°C; below 80% R.H.
Storage Temperature/Humidity -20°C to 60°C; below 75% R.H.
Power Supply 9 volt Alkaline battery
Battery Life approx. 50 hours
Dimensions 143mm (L) x 74mm (W) x 34mm (D)
Weight 220g approx.
Ordering Information
Model Name Description
Tenmars TM-91 Radiation Monitor
Included accessories: User’s manual, and battery.
Weight .2 kg


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