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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)


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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

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