FRISKER

Model # TBM-15

FEATURES: LIGHT WEIGHT. ONE HAND OPERATION. DETACHABLE PANCAKE PROBE. BUILT-IN SONALERT WITH VOLUME CONTROL. ANTI-SATURATION CIRCUIT.

P-15 (Included)

DESCRIPTION: Small three range Ratemeter with separable 2'' diameter pancake probe. Reads out in counts per minute ( and mR/hr). Thin probe window is recessed and protected by sturdy stainless steel grill. Instrument will see alpha, beta and gamma radiation. Anti-saturation circuit will not fall below full scale in high fields. Tested to 100 R/hr. Sonalert with volume control gives audible rate indication.

APPLICATION: Its small size, light weight, separable probe and large detector area make this a very useful monitor for surveying bench tops or checking hands, clothes and fingertips for almost any radioactive contamination.

See ``Beta Pancake Response'' specification (BETA PANCAKE RESPONSE) contamination.

See ``Beta Pancake Response'' specification (BETA PANCAKE RESPONSE)

SPECIFICATIONS:

• Meter: Ruggedized 2 1/2'' meter.
• Ranges: 3 ranges, linear - 0-500; 0-5,000; 0-50,000; cpm (0-.15, 1.5, 15 mR/hr).
• Switch Position: Off, Battery Test, X100, X10, X1.
• Audio: Sonalert with volume control.
• Detector:
      T-1190 2'' diameter (5cm) ``pancake GM'' tube.
      Window Diameter: 1 3/4''; 4.5 cm.
      Window Thickness: 1.5 mg/cm<sup>2</sup>
      Quench Gas: Halogen for long life.
      Background: Typical 50 cpm. Thin profile of tube (13mm)gives low background.
      Efficiency: 100% for all betas and alphas that have sufficient energy to penetrate the thin window.
• Physical Dimensions: 3''; 7.6 cm wide x 5 1/4'' W; 13.3 cm long x 2 1/4''; 6 cm thick (excluding probe, meter, and handle).
• Calibration:Single master calibration pot as well as individual cal pots for each scale.
• Power: 9 volt nominal ``transistor'' battery; Eveready 1222.
• Weight:
      Electronics only: 22 oz.; 625 gm.
      Total: including separable pancake probe 34oz.; 0.97 kg.
• Battery Life: 100 hours in normal operation.

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