GammaTwin Dose Rate Meter

GammaTwin Dose Rate Meter
  • GammaTwin Dose Rate Meter

Specifications

Small and handy, PTB-approved dose rate meter for the measurement of gamma radiation and X-rays for ambient dose rate equivalent Ḣ*(10) and ambient dose equivalent H*(10) (local dose).

           • detector: energy compensated Geiger-Müller-tube

           • large, digital indication of measured values on LC-display (backlit)

           • selectable simultaneous or separate indication of dose and dose rate, additionally analog indication of dose rate                (logarithmic bargraph)

           • 4 preset dose and dose rate alarm thresholds; upon request GRAETZ changes the standard alarm thresholds                    according to customer requirements

           • switchable acoustic single-pulse indication

           • automatic and continuous storage of the dose into a non-voltile memory

           • storage of the dose and of set parameters even at battery change

           • permanent self test

           • designed for rough use, housing made of aluminium, protection class IP54 (splash proof)

           • menu-driven user navigation

           • supplied with a robust nylon bag 

 
Characteristics:
Radiation type gamma and roentgen
Calibration with gamma Cs 137
Measuring range:
- dose
- dose rate
- PTB approved dose

0,5 nSv/h ≤ Ḣ*(10) ≤ 70 mSv/h
0,5 µSv ≤ H*(10) ≤ 1,0 Sv
1,0 µSv/h ≤ Ḣ*(10) ≤ 20 mSv/h
Energy range: 45 keV – 1,3 MeV
Dose alarm tresholds: 200 µSv, 500 µSv, 1000 µSv, 2000 µSv
Dose rate alarm tresholds:  7,5 μSv/h, 25 μSv/h, 40 μSv/h, 300 μSv/h
Temperature range -20°C ~ +60°C
Protection type IP 54
Dimensions 26 x 66 x 103 mm
Weight aproximativ 190 gr.
Power Supply 2 batteries of 1,5 V (tip AAA), lifecycle between changes: approx. 12 months
Approvals: PTB (Physikalisch-Technische Bundesanstalt)
ASR nr. VI 203/2009
ISO 9001
Warranty 1 year
Optional probes:
- Scintillation probe 2002 for high sensitive β și γ measurements
-  ABG170 Proge for α, β si γ measurements
Measuring range:
0 – 200 cps
200 – 2000 cps
2 – 20 kcps
0 - 20 kcps

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