TBM-IC-HLS Ion Chamber

Wide Range: 0.1 mR/hr to 1,000 R/hr

TBM-IC-HLS wide range ionization chamber, down to 1 pSv

The TBM-IC-HLS consists of a 3.7 in dia x 6 in long air ion chamber coupled to a stable solid-state MOSFET input electrometer with built-in A to D converter. The unit displays in two ranges directly in mR/hr or μSv/h, Dose Rate. Please specify units before ordering. Integrated Dose reads in total Roentgen or optional total Sieverts. The Ion Chamber features 180 mg/cm2 graphite lined methacrylate walls which yield accurate air equivalence. A thin (0.5 mg/cm2) mylar window allows high sensitivity readings for alpha and for low energy beta such as C14. X-ray sensitivity is down to 2 KeV as well as higher energy betas and gammas.


Detector: Free Air ion chamber 3.7 in dia x 6 in long. Internal volume almost one liter
Wall and Cap: Methacrylate, graphite lined 180 mg/cm2 walls and 540 mg/cm2 cap.
Window: 3.0" dia. x 0.5 mg/cm2 Mylar.
Display: LCD 8 digits
Indicator Lamp: Green LED 10 pulses/sec per mP/h. Red Over-range Indicator

Electrometer: Solid State MOSFET input.
Electronics: Solid State MOSFET input
Batteries: 1 set of CR-1220 Lithium lasts for the shelf life 7 years, 6 each AA - 1000 hr.
Dimensions: 6 in x 4 in x 12 in including handle.
Weight: 28 oz. complete with batteries. 870 (grams)

TBM-IC-HLS energy response curve