PRM-7000 Geiger Counter - Nuclear Radiation Contamination Detector & Monitor

Condition: New product PRM-7000 General Purpose Geiger Counter By Mazur Read more specs in More Info. Read about one of best called Radiation Meter Called the Inspector Vs. The Mazur. Check out the advantages why the Mazur is better than the compitition.

Read about the advantages this model versus the Inspector or the compitition at the bottom..



The PRM-7000 is built upon the same long battery life, high quality, made in the US, platform as the PRM-8000 and PRM-9000, which have been the choice of governments, organizations and individuals around the world.The instrument is designed to similar specifications as devices used by firefighters, HAZMAT teams, paramedics and other first responders to address the radiation hazards they face. Unlike other instruments in this price range, the PRM-7000 can be calibrated to the official international standards of accuracy required for regulatory work. An actual NIST-traceable calibration report example can be reviewed here.



Mazur Instruments uses only genuine detector tubes, made in the US, by LND in all of its products and does not rely on imported, cloned or “knock-off” detector tubes present in some lower priced products.  Accurate, reliable, made in the USA, the PRM-7000 Geiger counter is an ideal solution for individuals, health physics professionals, educators, researchers, outdoor enthusiasts and rock collectors.

Unique Monitoring Capability

The instrument is designed to continuously collect measurements and statistics enabling complete environment assessment. This vital capability is not available on similarly priced products.

Using only one key, users can scroll through several screens that display present, average, maximum and minimum measurements in uR/hr, mR/hr, uSv/hr, Counts per Second (CPS) or Counts per Minute (CPM).

This nuclear detector not only records the maximum radiation measured, but also displays the time and date at which the maximum reading occurred. Conventional Geiger counters require the user to be looking at the radiation meter to capture such events.

Supports English and Japanese

The two-line, alphanumeric display supports both English and Japanese languages promoting ease-of-use and concise measurement. The display is backlit to support low-light conditions.

Industry Leading Battery Life

The battery life of this radiation detector and monitor is over 6-years under normal conditions from a single, readily available, 9-volt lithium battery that is user-installable without soldering.

The supplied standard alkaline 9-volt batteries, available virtually everywhere, provide over 3-years of life under normal conditions.

Data Logging and USB Connectivity

With over 100K bytes of internal data logging memory included, this Geiger counter can autonomously (without the need for a PC) store up to 91,466 minutes or hours of time-stamped measurements. These measurements can then be uploaded later to a PC in CSV format for analysis.

A user-settable dose rate alarm sounds an audible alert when the measured radiation level exceeds that of the alarm level setting.

Designed by Mazur Instruments and manufactured in the USA, the PRM-7000 Geiger counter and nuclear radiation monitor includes abundant I/O options including support for headphones, external speakers, external power and USB data exchange (Requires Optional 3.5mm to USB Adapter Cable).


The compellingly priced PRM-7000 provides essential nuclear radiation awareness during a nuclear accident, incident or emergency



All specifications are subject to change without notice.

PRM-7000 General Purpose Geiger Counter


Battery Life1 
Standard 9V Lithium60,000 Hours / 6.85 Years
Standard 9V Alkaline28,250 Hours / 3.22 Years (included)
Measurement Front End 
DetectorLND 713 Geiger-Muller tube, Halogen-quenched Thin Wall Beta-Gamma Detector (Made in The USA)
Radiation Detectedbeta, gamma and x-radiation
Energy Sensitivitybeta / gamma / X-rays: min 35 keV

gamma sensitivity: 450 CPM/mR/hr
calibrated to Cesium-137 (Cs137)
Accuracy±10% Typical, ±15% Maximum
Measurement Ranges

0.001 to 500 mR/hr
0.01 to 5,000 uSv/hr
1 to 500,000 uR/hr
1 to 225,000 CPM (450 CPM/mR/hr)
0 to 3,750 CPS (7.5 CPS/mR/hr)
Total Count: 0 to 4,294,967,295 (32 Bit Integer)

Measurement StatisticsContinuous availability of Elapsed Time, Average, Minimum and Maximum dose rate in either uR/hr, mR/hr, uSv/hr, CPS or CPM

Time stamp on new maximum
Timed MeasurementSelectable 1, 5, 10, 20, 30, 60 and 90 minute interval
Dose Rate AlarmAlarm can be set in mR/hr or uSv/hr to any value within the measurement range
Internal Data Logging 
Storage100,000 Bytes non-volatile memory
Logging IntervalsEvery Minute or Every Hour
Maximum Capacity91,466 Minutes or Hours
(90% Normal Background, 10% Full-Scale)
Minimum Capacity32,656 Minutes or Hours
(100% Full-Scale Measurement Levels)
Logging Output FormatStandard Comma Separated Value (CSV) with time stamp and CPM Data (1,000 CPM/mR/hr)
User Interface 
Languages SupportedEnglish and Japanese
DisplayTwo-Line, 14 character transflective LCD with back light for low light conditions
KeypadWeather resistant commercial-grade membrane keypad
Visual IndicatorLED pulses on and off when a radiation detection event occurs. LED can be disabled.
Audio IndicatorTone beeps when a radiation detection event occurs. Audio three volume levels and can be muted.
Input / Output 
Audio Output / Digital InterfaceStandard 3.5mm jack with three selectable volume levels for output to audio systems, computer speakers or media player headphones.

Jack can also be provisioned by the user for pulse output or as a USB Interface for logging data by PC or transferring internal data logging memory (requires optional cable)
External Power9 VDC at a minimum current rating of 100mA
Environmental / Physical 
Temperature Range-20° to 51° C (-4° to 125° F)
Size143 x 83 x 35 mm (5.63" x 3.25" x 1.37")
Weight261 grams (9.2 oz.) including battery
ComplianceCE, Lead-Free

Independently tested and found to be substantially compliant with FCC requirements for home use. Approval to display FCC logo pending.

One Year (120 Days on GM Tube)



1. Assuming that background radiation is less than 25 CPM, the device is using the low-power setting and temperature of operation is 25° C (77° F).

  • Availability: In Stock
  • Model: PRM-7000

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