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Inspector EXP Geiger Counter

3.00 LBS
  • Product Description

    The SEI Inspector EXP-USB was designed for the requirements of emergency response personnel.  It has the same valuable features, small size, and quality of the Inspector USB Pocket Model, but instead of the built-in detector, it offers the added versatility of an external probe.

    The cable connecting the meter to the probe is a full 36" long, while the probe handle itself is 10" long, allowing for detection at a distance, thus reducing the chance of contamination of hands or gloves while scanning and frisking.expbelt.jpg

    The carrying case has a clear window panel providing full view of the readout, count light and access to the switches. Convenient hand straps and a belt loop are provided for carrying the instrument. A small pocket is provided for a check source.

    expread.jpgThe unique design of attaching the probe to the carrying case allows one handed operation if desired and the protective probe cover folds easily out of the way during one-handed operation.

    When not in use, the Inspector EXP can be stored in its original box, and/or configured as above and ready for immediate use in an emergency.  A red plastic protective cover comes with the unit and can be placed over the sensitive Geiger-Mueller tube for further protection.

    This item is in stock, and will typically ship out within 1 business day.

    Specifications for the Inspector EXP (same as for Inspector USB, except for Probe):


    Halogen-quenched, uncompensated Geiger-Mueller tube with thin mica  window

    Window Size

    1.4 to 2.0 mg/cm² thick; diameter is 45 mm (1.75”)

    Radiation Detected Alpha, Beta, Gamma, X-ray
    Sensitivity Detects alpha down to 2.5 MeV; efficiency at 3.6 MeV > 80%
    Detects beta at 50 keV w/35% efficiency, at 150 keV w/75%


    Detects gamma and X rays down to 10 keV thru window, 40 keV minimum through case; gamma sensitivity is 3,340 CPM/mR/hr


    15% of full scale, referenced to Cs-137

    Operating Ranges

    .001 to 100 mR/hr, .01 to 1000 µSv/hr, and 0 to 350,000 CPM, 0 to 5,000 CPS, Total Counts from 1 to 9,999,000

    Built-in Efficiencies

    Sulfur 35, Strontium 90, Cesium Cs137,Phosphorus 32, Carbon 14, Iodine 131,Cobalt 60, and Alpha

    Display 4-digit liquid crystal display with mode indicators; updates every 3     seconds
    Alert User-adjustable alert level for mR/hr and CPM is set using three buttons - default is 100 CPM
    Data Log Intervals Every Minute, every 10 Minutes, or every Hour
    Data Log Capacity Total is 1356. At 1 minute intervals, equals 22.6 hours. At 10 minute intervals, equals 226 hours (9 days). At 1 hour intervals, equals 1356 hours (56 days).
    Logging Output Text delimited file, with Time Stamp and CPM Data


    Electronic calibration at factory to NBS standard Cesium 137 gamma source


    Holds full scale in fields as high as 100X max. reading

    Power Required

    One 9-volt alkaline battery (included in price of unit)

    Battery Life

    Up to 2,160 hours use at normal background levels, or 625 hours at 1 mR/hr with beeper off

    Temperature Range

    -10° to + 50° C (14° to + 122° F)


    340 grams (12 oz.) with battery


    150 x 80 x 30 mm (5.9 x 3.2 x 1.2 in.)


    LED indicator, internally mounted audible beeper for count rate, can be switched off for silent operation

    Input Port Calibrate port on side for electronic calibration w/pulse generator
    Output Port Dual miniature jack on side to drive a CMOS or TTL interface to record counts on computer, data logger, or accumulating counter
    USB Port Mini-USB jack and included USB cable for use with Observer software
    Audio Port The Data Port can alternatively be used as an Audio Port, using an earphone with a 3.5mm stereo plug
    Probe and Cable Probe handle is 10" long, Cable w/BNC connections is 36" long
    Options (available) Xtreme Boot,
    Warranty 1 year on instrument, includes CE mark

    Country of Make


    Click on this link for the:

    Inspector USB and Inspector EXP Operating Manual

  • Product Reviews


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    1. An advisable purchase

      A practical device, very useful and reliable in any environment. It is attractive especially if coupled with Xtreme boot to protect it. A recommended purchase for those who need to make reliable measurements quickly and safely. on Oct 30th 2016

    2. Excellent Detector

      As accurate as some $2500 counters! Service from this company is fantastic!!! on Sep 29th 2016

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