TBM-IC-RN Radon Detector - Ion Chamber

  • Model: TBM-IC-RN


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The TBM-IC-RN Radon Detector detects 10 picoCi/l of radon in 5 seconds and detects public release level of radon in less than 10 minutes. The TBM-IC-RN ion chambers are now smaller and lighter and based on newest stable, essentially drift-free electrometer technology.

The TBM-IC-RN Radon Detector consists of an air ion chamber (2.9" D x 3.5" L) coupled to a stable solid state MOSFET input electrometer with built-in A to D converter to read out directly in nCi/liter. Range is 10 picoCi/l to 1 µCi/l. Ion Chamber walls are 180 mg/cm2 graphite lined methacrylate walls and provide accurate "air equivalence."


Digital Display:
6 Digits Rate,
8 Digits Integrate
Compact, Lightweight: 26 ounces
Flat Response, Air Ion Chamber
Detects axially below 5 KEV GAMMA OR X-RAY


Detector: Free Air ion chamber 2.9'' dia x 3.5'' long. Internal volume 300 cc.
Wall & Cap: Methacrylate, graphite lined 180 mg/cm2 walls and 540 mg/cm2 cap.
Readout: LCD: 6 Digits Rate; 8 Digits Integrate.
Indicator Lamp:
Green LED 10 pulses/sec per mR/h.
Red Over-range Indicator.
Rate 6 digit 10 picoCi/liter to 1 µCi/liter in a single range.
Integrate 8 digits 1 picoCi/liter* to 100,000 pCi/liter in a single range.
*less than 1 minute Indicator.
Note: TBM-IC-RN in Integrate Mode has no timer. User must provide clock or stopwatch.
Electrometer: Solid State MOSFET input.
Electronics: A-D converter LCD drivers.
10 ea. (Button) NEDA CR-1220 - shelf life 7 years.
6 ea. (AA) NEDA 15A - 1000hr.
Dimensions: 11" x 4" x 8" including handle and optional pump.
Air Flow: Passive Diffusion or lightweight Battery powered pump.
Weight: 26 oz. complete with batteries. Optional pump is 2 lbs.
Options: Readout in Si units: Bq/m3.
Optional Pump: Flow Rate: 4 SCFH. Batteries: 2 AA Batteries.

Working Level and Rn-222 Radon Gas vs. Radon Daughters:

Option 1: Particulate pre-filter removes much of the Radon daughters from the in-coming air stream but lets the Radon gas pass into the ion chamber for measurement.

Option 2: Activated charcoal pre-filter which stops much of the Radon gas is also available.

This product was added to our catalog on Wednesday 25 October, 2017.


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