Survey Meter OD-01




  • Dose meter and dose rate meter for the measurement of the ambient dose and dose rate equivalent H*(10), dH*(10)/dt  and the directional dose and dose rate equivalent H'(0.07) , dH'(0.07)/dt of mixed radiation fields (X-rays, gamma and beta radiation) (type approval intended)
  • Radiation detector: air opened ionisation chamber
  • Measuement range: 3 decades for dose and 6 decades for dose rate measurements
  • Automatic switch of the fine measurement ranges
  • Measurement in the soft-radiation region above 6 keV
  • Measurement of hard X-rays and gamma radiation as well as bremsstrahlung of up to 7.5 MeV (up to 15 MeV using an additional acrylic plastic shielding)
  • Measurement of ambient and directional dose and dose rate of pulsed radiation fields
  • Measurement of beta radiation of energies from 60 keV up to 2 MeV
  • Detachable probe for remote measurements of up to 100 m
  • Easy-to-read back-lighted LCD panel
  • Battery powered, transportable and stationary applicable device
  • Application for radiation safety measurements in following fields:
    • Medical and technical irradiation units
    • Atomic power plants
    • Laboratories for radioactive nuclides
    • Nuclear medical units
  • Optional equipment:
    • USB cable and software for measurement evaluation via PC
    • Power supply (DC 6 V) with power lead
    • Variable probe extension cable up to 100 m upon customer request
    • Acrylic plastic shielding for energy values E > 7,5 MeV
    • Wall holder for stationary application
Technical Specification OD-01
Measurement Units: Ambient dose equivalent H*(10)
  Ambient dose rate equivalent dH*(10)/dt
  Directional dose equivalent H'(0,07)
  Directional dose rate equivalent dH'(0,07)/dt
Display ranges:  
Dose rate:
0 .. 2000 µSv/h
0 .. 2000 mSv/h
Dose: 0 .. 2000 µSv
Energy ranges:  
Photon radiation: 6 keV to 7,5 MeV (approx. 15 MeV with additional acrylic plastic-shielding)
Beta-radiation: 60 keV to 2 MeV
Radiation probe: Air opened ionisation chamber
Volume: 600 cm3
Wall-reinforcement cap: removeable, 550 mg/cm²
Entry window: 3,3 mg/cm² (metallised PET-foil)
Preferred beam direction; point of reference axial, marked on detector
Wall potential: + 400 V (mSv/h, µSv)
+ 40 V (µSv/h)
Measurement uncertainities: < 15 % (fine measurement range 20)
< 5 % (fine measurement ranges 200 and 2000)
Minimum Measurable Dose 0,01 µSv/h
Linearity: ± 5%
Saturation deficit: - 5% @ 2000 mSv/h
Warm-up time: 2 minutes
Operating voltage control: Battery symbol at low battery-voltage
Interface: USB (optional with software)
Power supply: 4 batteries LR 6 type AA max. 6,2 V
  6V DC external power supply optionally available
Power consumption: approx. 30 mA @ 6 V
Battery lifetime: approx. 100 h
Working temperature range: -10 °C to + 45 °C
Storage temperature range: -20 °C to + 55 °C
Air pressure: 800 hPa to 1100 hPa
Relative humidity: < 80 % r.H.
Display unit (L x W x H): 210 mm x 108 mm x 42 mm
Probe (Ø x H). 112 mm x 260 mm
Connecting cable: 0,7 m (up to 100 m optionally available)
Weight: approx. 1,5 kg


Angular response for photon radiation:

Angular Response for beta radiation:

Energy response for beta radiation in axial beam direction: (typical values)

Isotope Medium energy [keV] relative Response
Strontium-90 800 keV 0,70
Krypton-85 240 keV 0,30
Prometium-147 60 keV 0,20


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