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:
|
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:
|
Measuring range:
|
