Mazur PRM-8000 Handheld Geiger Counter and Nuclear Radiation Monitor


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PRM-8000 Handheld Geiger Counter and Nuclear Radiation Monitor

The Mazur PRM-8000 Handheld Geiger Counter and Nuclear Radiation Monitor Scans items for nuclear radiation, detect Naturally Occurring Radioactive Materials (NORM) and continuously monitor your environment.

The meter delivers laboratory grade performance in a compact unit and measures alpha, beta, gamma and x-radiation.

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.

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-8000 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).

24/7 Monitoring of Present, Average, Maximum and Minimum Radiation Levels

Measures alpha, beta, gamma and x-radiation

Dual Language:
English and Japanese

0.001 – 200mR/hr Range

Internal Data Logging

Visual and Audible Indicators

Display Units – uR/hr, mR/hr, uSv/hr, CPS and CPM

6-Year+ Battery Life
with user-installable
Lithium 9-Volt Battery

Backlit, Two-Line LCD Display

Supports headphones and external speakers

External Data logging output in industry standard CSV format with optional USB cable.


PRM-8000 Geiger Counter

Geiger Counter

Based on the
Industry Proven
LND 712 GM Detector

Japanese Text Setting

Calibration Available
From Independent Lab

Carrying Case Included

3.5mm to USB
Adapter Cable Optional

Case Designed and
by Thule – Case Logic




PRM-8000 General Purpose Geiger Counter


Battery Life1
Standard 9V Lithium 60,000 Hours / 6.85 Years
Standard 9V Alkaline 28,250 Hours / 3.22 Years (included)
Measurement Front End
Detector LND 712 Geiger-Muller tube, Halogen-quenched with mica end-window
Radiation Detected alpha, beta, gamma and x-radiation
Energy Sensitivity alpha: minimum 2.5 MeV; efficiency at 3.6 MeV > 80%
beta: minimum 50 keV with 35% efficiency at 150 keV 75%
gamma/X rays: min 10 keV (window), min 40 keV (case)gamma sensitivity: 1,000 CPM/mR/hr
calibrated to Cesium-137 (Cs137)
Accuracy ±10% Typical, ±15% Maximum
Measurement Ranges 0.001 to 200 mR/hr
0.01 to 2,000 uSv/hr
1 to 200,000 uR/hr or CPM (1,000 CPM/mR/hr)
0 to 3,333 CPS (16.66 CPS/mR/hr)
Total Count: 0 to 4,294,967,295 (32 Bit Integer)
Measurement Statistics Continuous availability of Elapsed Time, Average, Minimum and Maximum dose rate in either uR/hr, mR/hr, uSv/hr, CPS or CPMTime stamp on new maximum
Timed Measurement Selectable 1, 5, 10, 20, 30, 60 and 90 minute interval
Dose Rate Alarm Alarm can be set in mR/hr or uSv/hr to any value within the measurement range
Internal Data Logging
Storage 100,000 Bytes non-volatile memory
Logging Intervals Every Minute or Every Hour
Maximum Capacity 91,466 Minutes or Hours
(90% Normal Background, 10% Full-Scale)
Minimum Capacity 32,656 Minutes or Hours
(100% Full-Scale Measurement Levels)
Logging Output Format Standard Comma Separated Value (CSV) with time stamp and CPM Data (1,000 CPM/mR/hr)
User Interface
Languages Supported English and Japanese
Display Two-Line, 14 character transflective LCD with back light for low light conditions
Keypad Weather resistant commercial-grade membrane keypad
Visual Indicator LED pulses on and off when a radiation detection event occurs. LED can be disabled.
Audio Indicator Tone beeps when a radiation detection event occurs. Audio three volume levels and can be muted.
Input / Output
Audio Output / Digital Interface Standard 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 Power 9 VDC at a minimum current rating of 100mA
Environmental / Physical
Temperature Range -20° to 51° C (-4° to 125° F)
Size 143 x 83 x 35 mm (5.63″ x 3.25″ x 1.37″)
Weight 198 grams (7 oz.) including battery
Compliance CE, Lead-FreeIndependently tested and found to be substantially compliant with FCC requirements for home use. Approval to display FCC logo pending.
One Year (60 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).

All specifications are subject to change without notice.



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