TBM-IC-XRAY Ion Chamber

  • Model: TBM-IC-XRAY


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The Model TBM-IC-XRAY provides accurate compliance testing of a wide variety of X-Ray equipment. The unit is now more compact and lightweight, featuring the latest, most stable, drift-free electrometer technology. This Ion Chamber consists of an air-equivalent ion chamber coupled to a stable solid state MOSFET input electrometer with a built-in A to D converter to read out directly in mR/h or mR. Rate Range is 0.01 mR/h to 100.00 mR/h in one range. Dose range is 0.01 mR to 10 R.


One-hand operation
Digital Display: 6 digit-rate, 6 digits integrate
Lightweight design weighs only 2.4 lbs
Detects axially below 15 KeV Gamma / X-RAY
Flat rate response and air equivalent
Air Ion Chamber

Detector: Air equivalent ion chamber.
Window: Light-tight 0.9 mg/cm2 Mylar laminate. 10 sq cm area. 36 mm (1.4") dia.
Readout: LCD 8 digits
Indicator Light: Green LED 10 pulses/min per mR/h.
Red LED Over-range Indicator.
Rate 6 digits 0.01 mR/h to 100 mR/h in one range.
Integrate 6 digits 0.01 mR to 9.9R.
Photon Energy Range: 15 KeV - 500 KeV ± 20%
High Voltage: Fully user adjustable (internal pot).
X-Ray Rep Rate: Use either rate or integrate mode for pulses with repetition rate of less than 1.0 Sec.
Use Integrate Mode for repetition rate less than 1.50 Sec.
Electrometer: Solid State MOSFET input.
Electronics: Adj H. V. Supply, Pulse Shaper. A-D converter LCD drivers. Test and display functions.
Pulse Duration and Content: With sufficient repetitions, TBM-XR and TBM-EXR can accurately integrate pulses of less than a microsecond duration and longer and including continuous emission. Pulse content of 0.5 nanoR are measurable with sufficient repetition rate to give at least .01 mR/hr for at least 5 to 10 seconds.
Temperature of Operation from -20° to 50° C
Relative Humidity 0 - 95%
Radio-frequency 10 mW/cm2 up to 4 GHz affects meter viewing < ± 10%
Magnetic 200 Gauss ± 5% effect
Geotropism < ± 2% effect
Response Time: 2-3 seconds for rate and for integrate.
Time to Zero: If count-rate goes to zero, the digital display will hold the old count for 12 seconds before displaying "0.0."
Batteries: Front panel battery test is provided.
6 ea. (AA) NEDA 15A - over 100 hrs of operation.
5.5" x 3.5" (including handle)
Weight: TBM-IC-XRAY complete with batteries and internal detector: 2.4 lbs.

Readout in Si units nGy and nGy/h.
Ra-UBG - Check source.
Other entrance window material or thickness.
High voltage test button.
5 cm nylon positioning bumpers.

This product was added to our catalog on Tuesday 11 July, 2017.


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