Technical Associates TBM-3S Heavy-Duty Surface Radiation Monitor

Representative image only.
Technical Associates Mfr # TBM-3S-MR – Item # EW-81920-00
Detect alpha, beta, and gamma radiation in mR/hr and cpm

$1,035.00USD / Each


Specifications & Description

  • Range0 to 0.15/1.5/15 mR/hr; 0 to 500/5000/50,000 cpm
  • DetectorGeiger-Müller (GM) tube, 2" dia "pancake"
  • FunctionAdjustable alarm, low-battery indication
  • Sensitivity3000 cpm/µR/hr (referenced to Cs-137)
  • DisplayAnalog bar graph
  • Window1-3/4" (4.4 cm) dia
  • Window Density1.5 mg/cm²
  • Background (cpm)50
  • BatteryOne 9 V
  • Depth (in)2 1/4
  • Width (in)3
  • Height (in)5 1/4
  • DescriptionHeavy-Duty Surface Radiation Monitor


one 9 V battery and a certificate of conformance to factory specifications

More About this Item

Heavy-duty construction ensures that this monitor will stand the rigors of daily use. Thin, recessed end window permits easy penetration of ions and is protected by a sturdy aluminum grill. The speaker and Geiger-Müller (GM) tube are housed in a rugged case. Replaceable neoprene feet on bottom of monitor let you place unit on bench or desktop—bottom face of instrument will not be contaminated.
Excellent for Fire Department, Ambulance, Police, First Responsers, and U.S. Custom Personnel use for surveying people, cars, luggage, and other surfaces.




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