THE MICRO-TBM

Model # TBM-6U

FEATURES: SENSITIVE - 1µR/division SMALL - TBM - SIZE - 29 OUNCES STATE OF THE ART BGO EXTRA SENSITIVE CRYSTAL RUGGED, SPLASH PROOF WIDE COVERAGE ADDITIONAL PROBE CAPABILITY, SWITCH SELECTABLE ONE INSTRUMENT WITH ADDED PROBES TO DO MOST JOBS

Figure 1: TBM-6U

DESCRIPTION: The TBM-6U features an internally mounted sensitive scintillation detector. The lower limit of detection (95% confidence level) is 0.7 µR/hr. and 1 µR/hr registers one division on the meter. An LED flash as well as a beep for each count makes for easier use in dark areas. Audible and LED visual counts are a sub-multiple of the actual radiations recorded to allow differentiation at high counting rates. A BNC connector is provided for addition of an external probe. Internal and external probe circuits are switch selectable and independently calibratable. Optional second probe may be any GM, scintillation, or gas flow.
 
SPECIFICATIONS:

• Meter: Rugged recessed 2-1/2'' meter.
• Ranges: 4 linear for each detector: 0-25; 50; 500; 5,000 µR/hr* internal, and 0-250; 500; 5,000; 50,000 cpm** for external. Other scales and overlays available: µR/hr, Sieverts, etc.
• Range Switch Positions: Off, Battery Test, 5K, 500, 50, 25 µR/hr. and 10,000; 1,000; 100; 50 cpm.
• Detector Switch (Toggle): Internal, External
• Time Constant Switch: Fast, Slow (approx. 2 & 11 sec.).
• Pulse Counter: Piezoelectric audio and flashing LED (red for internal scintillator, green for external probe).
• Detector: Internal: Scintillation including BGO crystal 25mm x 10mm (equiv. to 1'' x 1'' NaI(Tl). External: optional GM, scintillation, or gas flow.
• Calibration: Single master Cal Pot for each detector plus individual Cal Pot for each scale. Pots adjustable from outside case.
• High Voltage: Independent internal adjust for each detector.
• Power: 9 V transistor battery - Eveready E1222 or equivalent. Battery life: 100 hrs. norm. operation.
• Dimensions: 3'' (7.6cm) W x 5-1/4'' (13.3cm) L x 3-1/8'' (8cm) Deep.
• Total Weight: 29 ounces (including internal probe & battery).
• Shipping Weight: 4 lbs.

* 0-0.25; .5; 5; 50 µSv/hr.

** 0-5; 10; 100; 1,000 cts/s



^T_A  TECHNICAL ASSOCIATES
7051 ETON AVENUE * CANOGA PARK, CA 91303
TELEPHONE (818) 883-7043 * FAX(818) 883-6103
e-mail: tagold@nwc.net     www.tech-associates.com