Home Back My Cart : 0 item(s)


RDS-31 Survey Meter

applications e.g. in civil defense, industrial and laboratory
Price: Call for price
Product ID : MG-RAF-1233261
Manufacturer: Mirion Technologies (MGP)


Call for price


The new RDS-31S/R Multi-purpose Survey Meter continues the line of RADOS survey meters offering modern design and approach to radiation monitoring. RDS-31 is a small hand held, battery operated survey instrument using an energy compensated GM-tube as primary detector. Due to its versatile functions and durability it is suited for a wide range of applications in civil defense, industrial and laboratory use etc. RDS-31 is featuring excellent ergonomics; lightweight and easy to handle, with visual and audible alarms and internal vibrator. The large LCD with Energy Save Backlight is well visible even in sunny conditions due to the illumination control. External probes of GMP-12 series, GMP-11/15 and Multirad LLR probes: TGS, Alpha 125 and Alpha Wound can be connected to RDS-31 by cable or by additional adapter extending the capabilities of the instrument. User protection while using external probe by measuring simultaneously instrument dose rate.


• H*(10) ambient close equivalent dose and dose rate

• existing GMP-series external detectors can be used with suitable adapters

• new ergonomic design

• large screen, configurable backlight with automatic illumination control

• high impact durable case construction, IP-67 immersion proof

• internal memory to store measurements

• flexible histogram functions

• firmware of instrument upgradable through cable link

• configurable short cut functions

• Internal WRM2 telemetry module



Radiological Characteristics 

•  radiation detected: gamma and X-rays, 48keV...3MeV. Alpha, Beta radiation with an external probe

•  detectors:  one energy-compensated GM tube, energy response according to ambient dose equivalent H*(10)

•  dose rate measurement range: 0.01 μSv/h...0.1 Sv/h or 1 μrem/h...10 rem/h

•  dose measurement range: 0.01 μSv...10 Sv or 1 μrem...1000 rem

•  resolution: three significant digits or 0.01 μSv/h on dose rate and 0.01 μSv on dose ( 1 μrem/h on dose rate and 1 μrem on dose)

•  calibration accuracy: ± 5%, 137Cs , calibration direction and in the calibration field, temperature +20 °C (68°F)

•  dose rate linearity: ± 15% ± least significant number 0.05 μSv/h...0.1 Sv/h (5 μrem/h to 10rem/h)

•  variation of the response due to photon radiation energy (RE) and angle of incidence (RE, A): 71%


Functional Characteristics 

•  two buttons to operate the instrument 

•  configurable units:  Sv(/h), R(/h), with external detector Gy(/h), cps, cpm, dpm and Bq

•  flexible histogram functions ( dose rate, dose, diagnostic logging depending on configuration, timestamp, optional location control for mapping and repeating room measurement analysis)

•  additional histogram analyzing capabilities on CSW-software

•  real time clock function

•  configurable audible, visual and vibration alarm 

•  RF-communication and USB-communication with suitable adapter

•  customized LCD display with 5 digit 14-segment floating point area and special symbols for alarm, external  probe, battery, RF-communication, vibration alarm, chirp and mute


Electrical Characteristics 

•  power supply: 2 AA size batteries (alkaline or NiMH)

•  contacts for external power and charging of NiMH battery (charging conditions +5... +35°C)

•  operation time with fresh alcaline batteries more than 4 months at background radiation at +23°C, 8 h use/24h

•  operation time with fully charged NiMH batteries more than 1 month at background radiation at +23°C, 8 h use/24h. At higher/lower temperatures the operation will be shorter


Mechanical Characteristics 

•  case high impact durable plastics reinforced with glass fiber 

•  ergonomic design, rubber grip and cushion around the case

•  enclosure class IP67 (IEC 60529),  water proof including battery compartment

•  dimensions: 100 x 67 x 33 mm (3.93 x 2.63 x 1.29 in)

•  weight: 175 g without batteries (0.385 lb), 220 g with batteries (0.485 lb)

•  wrist/neck strap

•  belt clip 


Environmental Characteristics 

•  -25°C...+60°C (-40°F to 131°F), operating temperature

•  -40°C...+70°C (-40°F to 158°F), storage temperature

•  relative humidity: up to 85% at +35°C (95 °F)

•  fulfills the RF-immunity levels of applicable standard



•  electrical cradle or mechanical cradle e.g. for easy vehicle fixing

•  table top model

•  pocket/belt clip/pouch

More images

Products You May Like

  • CT007-F

    CT007-F $250.00

    The CT007-F is a compact alpha, beta, gamma detector. This makes it suitable for identifying radioactive contamination.

    Unlike pancake Geiger-Mueller tube based instruments, it is light, compact, and durable.

    The CT007-F is sensitive enough to pick up the radiation from household items, but can still measure up to dangerous levels. It is easy to use and can even connect wirelessly to your phone. The phone provides a rich user interface and allows for time and date stamped data logging with GPS coordinates. The data can be logged to a file on your phone as well as optionally being logged to RadResponder. On the back is the sensor with an alpha/beta shield. This shield can be closed to take gamma only measurements, or opened to reveal the sensor window and take alpha and beta readings. This shield also keeps the sensor safe during transport.

  • Inspector Alert V2

    Inspector Alert V2 $695.00

    The IMI Inspector Alert™V2 measures alpha, beta, gamma and X-radiation using a 2-inch "pancake" GM detector with high sensitivity to common beta and alpha sources. The easy-to-read digital display shows reading in your choice of Dose Rate - µSv/hr or mR/hr, and Count Rate - CPM or CPS. The Total I Timer feature allows timed readings from one minute to 40 hours for precise measurement of low-level contamination. An Audible alert sounds when the radiation reaches a user-adjustable level. -Quickly alerts user to the presence of harmful levels of nuclear radiation -Detects noble gases and low energy radionuclides -Automatically compensates for GM tube dead time -Will not jam in high radiation fields -Meets CE Certification, RoHS compliant and WEEE standards

  • MONITOR 4 & 4EC

    MONITOR 4 & 4EC $480.00

    Monitor 4 & 4EC Handheld Radiation Alert® Detector The M4 and M4EC are compact, general purpose survey meters capable of detecting alpha, beta, gamma, and x-rays over 3 selectable ranges. A red count light flashes and a beep sounds with each event detected. The Monitor 4EC offers a more linear reading for gamma and x-rays ( above 40 keV). Monitor 4 is a halogen-quenched uncompensated GM tube with thin mica window 1.5-2.0 mg/cm2 thick. Monitor 4EC is a halogen-quenched GM tube, energy compensated sidewall 2mm thin filter. Thin mica window 1.5-2.0 mg/cm2 thick. Effective diameter of window is 9.1mm (.36 in.)

  • MC1K Handheld Radiation Alert® Detector

    MC1K Handheld Radiation Alert® Detector $435.00

    The MC1K is a handheld survey meter using a built-in energy compensated GM detector. It detects gamma and x-rays up to 1000 mR/hr over 4 selectable ranges. A beep sounds and a count light flashes with each event detected.

  • Frisker

    Frisker $600.00

    Presenting the Radiation Alert® Frisker. A light-weight, single-handed radiation contamination instrument that has been designed to meet the demands of today’s radiation personnel for leak testing, surface monitoring, sample screening, and personnel screening. The Radiation Frisker detects alpha, beta, and gamma with an assortment of units of measure, customizable alarm levels, and a backlit display.

  • ONYX

    ONYX $860.00

    ONYX® can be used as a stand alone pocketable instrument, or it can connect to the internet and share data. The ONYX has a six button touch sensitive keypad that allows for easy use of a wide variety of functions such as graphic display of data, adjustment of audio chirp, data logging, changing units of measurement and calibration. ONYX also permits the user to upgrade the software running on the device to the latest version using a simple internet download feature.

Call us: 701-477-6461

Full Website