Portable contamination monitor GRAETZ CoMo-170 ZS
Product Highlights
Easy to use one-hand measuring system
Fast inspection of large surfaces due to large detector area
Optical and acoustic warning when the set warning thresholds (dose and dose rate) are exceeded.
High reliability due to constant self-monitoring
Small, handy housing, well decontaminable
- High-performance mobile contamination monitor with thin-layer plastic scintillation detector (complete elimination of gas-filled or gas-purged detectors).
- A detector can be used to make α-, β- and γ-sensitive measurements, and the measurement system automatically detects whether alpha radiation is present
- Possibility of simultaneous or selective measurement of α- and β-/γ-contaminations
- User-friendly user interface (operation via 5 function keys)
- Settings and measured value parameters protected by password
- Integrated measurement data storage, optional software for reading and processing the measurement data
- Optional stationary use in wall station with power supply
- In case of mechanical destruction of the detector foil, the repair can be carried out inexpensively by the user himself (no costly detector repair in the manufacturer’s factory necessary as with the xenon detector)
- Avoidance of high operating costs for gas flushing
Available firmware versions:
- CoMo-170 ZS DekoP: Measurement in Ip/s
- CoMo-170 ZS ATF: nuclide-related measurement in Bq, Bq/cm².
| Detector type | Thin Film Plastic Scintillation Detector with ZnS Coating | |
| Detector size | 170 cm² | |
| Display ranges | α-channel | up to 5,000 Ip/s (Am-241) |
| β-γ-channel | up to 50,000 Ip/s (Cs-137) | |
| Measuring ranges | α-channel | up to 2,500 Ip/s (Am-241) |
| β-γ-channel | up to 20,000 Ip/s (Cs-137) | |
| Zero effect | α-channel | approx. 0.1 Ip/s |
| β-γ-channel |
approx. 15 – 20 Ip/s | |
| Zero effect subtraction | Decon P | Automatic zero effect measurement and subtraction, zero effect measurement time parameterizable |
| ATF | Automatic zero effect measurement and subtraction, zero effect measurement time parameterizable, net or gross measurement selectable | |
| Dimensions | approx. 280 × 125 × 135 mm | |
| Weight (incl. batteries) |
approx. 800 g | |
| Protection class | IP54 (Protected against splashing water) |
For detailed technical data, please refer to our product data sheet for this article. Click here to download.
Efficiencies for different radionuclides
(Mean values from measurements with 100 cm2 specimens) The nuclide-related efficiencies of the scintillation detector are comparable to the efficiencies of conventional counting tubes.
| C-14 | approx. 14 % | Tc-99m | approx. 3 % |
| F-18 | approx. 18 % | In-111 | approx. 8 % |
| P-32 | approx. 25 % | I-123 | approx. 7 % |
| S-35 | approx. 5 % | I-125 | approx. 12 % |
| Cl-36 | approx. 42 % | I-131 | approx. 21 % |
| K-40 | approx. 30 % | Cs-137 | approx. 35 % |
| Co-57 | approx. 7 % | Au-198 | approx. 23 % |
| Co-60 | approx. 27 % | Tl-204 | approx. 43 % |
| Sr-89 | approx. 27 % | Am-241 α | approx. 22 % |
| Sr-90 / Y-90 (related to Sr-90) | approx. 42 % | P-238 α | approx. 12 % |
| U-238 α | approx. 26 % |
Application areas
FIRE BRIGADES & CIVIL DEFENSE
NON-DESTRUCTIVE TESTING (NDT)
NUCLEAR MEDICINE
Industry
Research & Education
Downloads
Technical data sheet
Download the technical data sheet for this product in PDF format now.
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Portable contamination monitor GRAETZ CoMo-170
Single-handed measurement system for highly sensitive nuclide-related measurement of surfaces for α-, β- and γ-contamination when handling ionizing radiation.
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