Inspector Radiation Detector

Internal Pancake G-M Survey Meter and Scaler - order online

SE International

Discontinued - replaced by the "Ranger"Inspector USB Survey Meter

The Inspector radiation detector features an internal GM detector and is microprocessor controlled. The survey meter is a general purpose G-M counter for alpha, beta, gamma and x-rays. The digital display, red count light and audible beep, provide instant indications of the radiation level. Other features include scaler function, an adjustable timer, and external calibration controls. 

General Use includes: emergency response personnel, laboratory technician, industrial, x-ray technician, radiographer, industrial hygienist, safety manager, equipment service and maintenance technician, radiation safety officer, general public, and geologist.

Common Applications include: gross wipe counting, surveying for NORM* contamination,  contamination surveys of packages, equipment, people, etc., regulatory inspections, low energy radio nuclide detection.

* Naturally Occurring Radioactive Material


Our radiation detectors are new and up-to date. Included is a fresh calibration and warranty. Some vendors sell older versions with expired calibration and warranty. The meters are warranted for one year and the tubes are warranted for 90 days. We provide unlimited technical assistance via phone. To whatever vendor you choose, always ask about warranty, calibration, and technical assistance. Also, tell them your application to confirm that you are buying the appropriate survey meter.

Click here for external detector version of the Inspector, click here: Inspector EXP+

For software specifications, click here: Observer Software

Inspector Survey Meter and Accessories

Online ordering for U.S. customers only.
Inspector Survey Meter USB  
Wipe Test plate  
Instrument Stand  
Waterproof Case  
Xtreme Protective Boot  
Observer Software

manuals: English | Español | Francais | Deutsch |

Inpsector Specifications

Inspector+ (Internal tube): Halogen-quenched, uncompensated GM tube with thin mica window, 1.4-2.0 mg/cm2 area density.
Effective diameter of window is 45 mm (1.75 in.).
Radiation symbol on front label marks the center of the detector.
Display 4 digit liquid crystal display with indicators.
Averaging Periods Display will update every 3 seconds. At low background levels, the update is the moving average for the past 30-second time period. The timed period for the moving average decreases as the radiation level increases
Operating Range
mR/hr - 0.001 (1ÁR) to 100 mR/hr
ÁSv/hr - 0.01 to 1000
CPM - 0 to 350,000
CPS - 0 to 5000
Total/ Timer - 1 to 9,999,000 counts
mR/hr ▒10% typical (NIST), ▒15% max - 0 to 100
ÁSv/hr ▒10% typical (NIST), ▒15% max - 01 - 1000
CPM ▒10% typical (NIST), ▒15% max - 0 to 350,000
(Referenced to Cs-137)
Alert Set Range mR/hr 0.001 - 50 and CPM 1 - 160,000
Gamma Sensitivity 3500 CPM/mR/hr referenced to Cs-137. Smallest detectable level for I-125 is 0.02 ÁCi at contact.
Timer Can set 1 minute sampling periods from 1 to 10 min
Count Light Red LED flashes with each radiation event.
Audio Indicator Internally mounted beeper (can be switched off for silent operation)
Outputs Dual miniature jack drives CMOS or TTL devices: count to computer or data logger. Sub mini jack input allows for electronic calibration
Anti-Saturation Meter will hold at full scale in fields as high as 100 times the maximum reading.
Power Requirements One 9-volt alkaline battery. Battery life is 2160 hours at normal background.
Temperature Range -10║C to 50║C (14║F to 122║F)
Weight Inspector: 301.4 grams (10.6 oz.) without battery.
Size 150 x 80 x 30 mm (5.9 x 3.3 x 1.2 in.)
Outputs 3.5mm jack for CMOS or TTL devices and counts to computer or datalogger.
USB for use with Free Observer USB Software for PCs


Video demonstration:


Utility Menu

The Utility Menu offers several options accessible by holding down the + button while turning the instrument on. 3 second (fast response)

  • Switches from mR/hr and CPM to ÁSv/hr and CPS
  • Reset the cal factor to 100.
  • Probe adjustment settings.
  • Adjust the CAL factor.
  • Reset all setting to original factory setting (default).
  • Includes: Soft Carrying Case, CE Certification
    Options: Observer Software, STAND, Protective Case, and Wipe Test Plate.
    Warranty: 90 day Warranty on GM Detector, 1 year limited

    Wipe Test Plate

    wipetest.jpg (8750 bytes)
    (patent #5,936,246)

    The stainless steel Wipe Test Plate slides easily onto the Inspector+ positioning the depression and wipe directly in front of the GM tube window at a fixed distance of 1 centimeter. The Wipe Test plate is removable for general surveying or decontamination. It can also be used for protecting the GM from damage and the instrument from being contaminated while the Inspector is not in use.

    Rugged Inspector Case


    click for larger picture

    Ideal for military applications, this is the ultimate case for protection from severe weather, drops, and more. Made from a nearly indestructible material, it has been designed to house your Inspector+ in a dust proof, air proof, and watertight case while still providing you with access to your Inspector+ for data, regardless of the conditions (Gamma detection only).

    Waterproof Pelican Cases Available


    Nuclear Instrumentation

    Dosimetry Shielding Sources Specials

    Hepa Vacuums

    Chemical Detection

    Marinelli Beakers

    Fume Hoods


    Emergency Response

    Nuclear Medicine

    Radiation Therapy Search Home

    Direct Scientific  /  tel (310) 589 0601 /   Email

    contact us: en espa˝ol, auf Deutsch
    Open 8:00 AM - 5:00 PM Pacific Standard Time
    Follow us on twitter and youtube.
    visit our youtube channel
    follow us on twitter
    Check out our instrument demos.