TBM-IC-MV Ion Chamber Survey Meter

Measures Gamma, and X-ray Radiation - Detects Alpha and Beta Radiation

The flat response TBM-IC-MV is a fast, sensitive ion chamber survey meter which detects alpha, beta, gamma, and x-ray radiation. This ion chamber survey meter is smaller and lighter than previous models. The system is based on stable, and essentially drift-free electrometer technology. The survey meter consists of a 2.5 inch diameter x 3.5 inch length air ion chamber coupled to a stable solid state Mosfet input electrometer. The internal A to D converter displays directly in mR/h or mR. Rate range is 0.1 mR/h to 9.999 R/h in a single range. Dose range is 0.01mR - 99.9R in a single range. 180 mg/cm² graphite lined methacrylate walls yield accurate air equivalence. The thin (0.5 mg/cm²) Mylar window allows high sensitivity readings for alpha and for low energy beta such as C¹⁴. The ion chamber is sensitive to higher energy betas, gammas and X-rays as well.

• Dose Rate and Total Dose
• Compact, light weight design, only 26 oz.
• Flat Response, Air Ion Chamber (see energy response curve below)
• Detects axially below 5 KEV gamma or x-ray
• Detects Alpha, Beta, Gamma and X-ray
• Fast Response
• Wide Range: 0.1 mR/hr to 9.999 R/hr

TBM-IC-MV User Manual

TBM-IC-MV Ion Chamber Specifications

Detector: Free Air ion chamber 2.5' inch diameter x 3.5 inch length. Internal volume 260 cc

Wall and Cap: Methacrylate, graphite lined 180 mg/cm² walls and 540 mg/cm² cap. Optional 1g/cm² walls.

Window: 2.0'' dia. x 0.5 mg/cm² Mylar.

Readout: LCD 8 digits.

Indicator Lamp: Green LED 10 pulses/sec per mR/h, Red Over-range Indicator

Range:
Rate 8 digit 0.1 mR/h to 9.999 R/h in a single range.
Integrate 8 digits 0.01 mR to 99.9R in a single range.

Electrometer: Solid State Mosfet input.

Electronics: A-D converter LCD drivers.

Batteries: 10 ea. (Button) NEDA CR-1220 - shelf life 7 years.
6 ea. (AA) NEDA 15A - 1000hr.

Dimensions: 5-1/2'' x 3-1/2'' x 8'' including handle.

Weight: 26 oz. complete with batteries.

Options: Readout in Si units: Sv and Sv/h.

X-Ray-SLV is optional X-Ray compliance sleeve with 10cm² aperture.