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 Wide measurement range: 3 coarse measurement ranges (µsv/h, msv/h and µsv) and each 3 fine measurement ranges with their final values at 20, 200, 2000 (automatic switch of the fine measurement ranges) Measurement in the soft-radiation region down to 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 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 (external power supply 6V DC optionally available) USB-Interface (software optionally available) Optionally: o Wall holder for stationary application o Check source (in preparation) Mainly useable for radiation safety measurements in following fields: medical and technical particle accelerators, medical and industrial X-ray installations, atomic power plants, laboratories for radioactive nuclides, nuclear medical units.
Technical Specifications Survey Meter OD-01 Measuring value: Type of radiation: Mixed radiation fields Pulsed radiation fields Display ranges: Dose rate Dose Energy range: Photon energy Beta energy Radiation direction referred to preferential direction (axial) Detector type: Volume PMMA-Shielding Face sided entry window Preferential direction/point of reference Wall potential Measurement uncertainties: Linearity Saturation deficit Warm-up time: Power Supply: Batteries, Accumulators Current consumption Battery lifetime Operating voltage control Ambient dose equivalent H*(10), Ambient dose rate equivalent dh*(10)/dt, Directional dose equivalent H (0.07, Ω), Directional dose equivalent dh (0.07, Ω)/dt, Photon and beta radiation yes yes 0 µsv/h.. 2000 msv/h 0.. 2000 µsv 6 kev to 7.5 MeV (15 MeV) (1) 60 kev to 2 MeV ± 45 for H (0,07) ± 90 for H*(10) Air-opened ionisation chamber, 600 cm³, disposable, 550 mg/cm² 3.3 mg/cm² (metal covered PETP foil) axial, marked on detector + 400 V (µsv, msv/h) + 40 V (µsv/h) < 15 % (fine measurement range 20) ± 10 % (fine measurement ranges 200 and 2000) ± 5 % - 5 % @ 2000 msv/h 2 minutes 4 pcs. Type LR6 AA max. 1,5 V (external power supply 6V DC possible) approx. 30 ma @ 6 V approx. 100 h Battery symbol in the display (2) At using an additional acrylic plastic shielding
Technical Specifications Survey Meter OD-01 Display unit: Dimensions: Measurement probe ( Ø x L) Display unit (L x W x H) Connecting cable 31/2 digit LC-display, back lighted Digit height: 12 mm Additional bar display Automatic switch for fine measurement range decades 112 x 260 mm 250 x 108 x 42 mm 0,7 m (optionally up to 100 m) Weight: Measurement probe Display unit Temperature ranges: Operation Storage Air pressure: 600 g 900 g - 10 to + 45 C - 20 to + 55 C 80 to 110 kpa Relative humidity: max. 80 %
Photon Energy Response 1,80 Photon Energy Response 1,60 relative response q / q 0 1,40 1,20 0 0 0 0,40 0,20 H'(0,07;Ω), without built-up cap H*(10), with built-up cap H*(10)/HX (PTB-Dos-23) H'(0,07;Ω)/HX (PTB-Dos-23) 0,00 10 100 1000 10000 photon energy / [kev] Angular Response Angular response 0 30-30 60 q / q 0-60 0,4 0,2 90 0,4 0,0 0,2 0,0 0,2 0,4-90 A 20 (16 kev) A 150 (118 kev) Cs-137
Angular response for beta radiation 1,2 Angular response for beta radiation (beta fields according to ISO 6980) 1,1 Relative response 0,9 0,7 Pm-147 (measurements) Sr-90 (measurements) Kr-85 (measurements) Pm-147 (PTB-Dos-23) Sr-90 (PTB-Dos-23) Kr-85 (PTB-Dos-23) 0 10 20 30 40 50 Angle of incidence / degree Table: Relative response for various beta energies (typical values): Radiation Isotope Energy / kev Relative response Direction of incidence Beta Sr-90/Y-90 800 0.70 Axial Beta Kr-85 240 0.35 Axial Beta Pm-147 60 0.25 Axial