The RAM-R-200 is a portable multifunctional, rugged survey meter designed for measuring wide range g amma radiation fields and contamination. The sturdy casing and internal electronics are designed to withstand shocks and vibrations and perform reliably in extreme environments. An internal detector containing two energy compensated GM tubes together with optional external probes will detect, measure, and digitally display both dose and dose rate levels of gamma radiation from 0.1µSv/h to 100 Sv/h (10µR/h – 10,000 R/h), and alpha/beta contamination from 0 to 1 Mcpm.
The RAM R-200 can be used with a three-segment sturdy telescopic rod for the external gamma probe. The RAM R-200 meter and its external detectors include embedded microprocessors, data memory, and communication functions. An audible indication is activated either by frequency fluctuations in accordance with the field strength or chirp for each measured pulse. The RAM R-200’s auto-ranging meter utilizes a combination display consisting of a smoothed digital display for minimum fluctuations, and a two-decade logarithmic analog bar graph for fast response.


  • General-purpose rugged survey capabilities.
  • Readings of hard-to-reach areas (i.e. vehicle surveys, elevated piping, etc.).
  • α,β,γ Surface contamination detection.
  • Portable or stand-alone radiation measurement station.


  • Wide range internal gamma detector.
  • Ruggedized, portable, compact, lightweight instrument.
  • Simple operation: only four push buttons.
  • Built-in RS-232 communication – three channels.
  • Special setup modes accessed via our configuration software.
  • Large, easy to read, digital and analog customized LCD.
  • Display backlight offers bright illumination for use in dark areas.
  • Easy connection of optional external probes.
  • Reliable telescopic rod containing a quick connection housing for meter and external gamma probes.
  • Audible alarm.
  • Automatic self-test of meter and external probes.
  • Automatic detector identification with each change of detector.
  • Automatic recording of dose accumulation by the internal detector also when the meter measurement is done by an external probe.
  • Low current consumption, more than 100 hours of continuous operation with a single 9V battery.
  • Passed sub-pressures, dust, shock, vibration, drop and immersion tests.
  • Meets MIL-STD 810. Electromagnetic compatibility tests meet MIL-STD 461.
  • CE marked.


  • Internal Detectors
    GM tube *ZP-1202 (ZP-1201)
    GM tube *ZP-1314 (ZP-1313)
  • Measuring range
    * 0.1 µSv/h – 1 Sv/h (10µR/h – 100R/h)
  • Energy range
    60keV– 2.0 MeV
  • Sensitivity
    17 cps/mR/h (ZP1201)
    1.4 cps/mR/h (ZP1313)
  • Accuracy
    ± 10% of reading within the measured range
  • Data logging
    1000 data records
  • Display
    DigiLog (3 digits and 2 decades of analog bar graph)
  • Measuring Units
    Radiation fields: Sv/h or R/h
    Rate: cps or cpm
    Dose rate accumulation: Sv or R
  • Power source
    One 9V alkaline cell
    100 hours of continuous operation
  • Temperature range
    Operation: -30oC to 60oC (-22oF to 140oF)
    Storage: -30oC to 70oC (-22oF to 158oF)
  • Humidity range
    10% to 95% RH (non condensing)
  • Casing
    Seawater resistant aluminum alloy, shock resistant

* Ambient Dose Equivalent

External probes for RAM R-200:


Gamma radiation external probe for RAM R-200 or stand-alone


Gamma radiation external probe for RAM R-200 or stand-alone


Gamma radiation external probe for RAM R-200 or stand-alone


Alpha, Beta, Gamma radiation/contamination external probe for RAM R-200 or stand-alone


Alpha, Beta, Gamma radiation/contamination external probe for RAM R-200 or stand-alone


Alpha radiation external probe for RAM R-200 or stand-alone

Other products