CoMo-170/-300 — Portable Alpha, Beta & Gamma Contamination Monitor

Specifications

Detector type:

Thin-layer plastic scintillation detector with ZnS coating, two aluminum vaporized Mylar foils (2 μm each), a fine-mesh honeycomb grid and a protective cover.
Alpha- and beta-/gamma-separation via count height analysis

Detector size:

CoMo-170: 170 cm²
CoMo-300: 300 cm²

Detector unit:

Autonomous, easily exchangeable assembly, integrated in the bottom of the overall housing

Background:

CoMo-170: α approx. 0.1 cps, β/γ approx.9 – 13 cps•CoMo-300: α approx. 0.1 cps, β/γ approx.20 – 30 cps

Background subtraction:

Automatic background measurement and subtraction, background measuring time programmable

Option of net or gross measurement

Efficiencies:

(according to surface emission rate (ISO 7503-1),
Average values from measurements with 100 cm² sources)

C-14      40%
Cl-36     63%
Co-60    62%
Cs-137   67%
Sr-90      73%
Am-241 α  56%
Pu-238 α   42%
U-238 α     45%

(according to activity (DIN 25482), Average values from measurements with 100 cm² sources)

C-14      15%
Cl-36     40%
Co-60    31%
Cs-137   41%
Sr-90      95%
Am-241 α   26%
Pu-238 α    20%
U-238 α      41%

Measuring electronics:

Microcontroller-based electronics Keyboard:

Keyboard

Foil keyboard with 5 function keys

Alarm:

Individually configurable for each type of measurement
Visual warning
Acoustic warning (approx. 80 dB at a distance of 30 cm)
Optional vibration alarm
Earphones can be connected for audible feedback in noisy or sensitive environments

Nuclides:

Preset calibration ex works
Settings and calibrations adjustable by user
Auto-calibration function
Library for up to 40 nuclides

Measuring time:

Continuously in search mode or with user-configurable measuring time

Interfaces:

USB interface (for connection with PC), battery charge/mains operation, external detectors, active wall station/wipe test station

LC display:

Large-area graphic LC display(128 x 64 pixel)
Automatic illumination via photocell (LDR)or adjustable fixed duration

Power supply:

2 batteries (AA battery LR 6) or rechargeable batteries (NiMH),
Approx. 25 h operating time. Can be recharged via charger or wall station

Nominal operating range:

-10 °C to +40 °C (special version down to-20°C)
up to approx. 90 % RF (non-condensing)

IP Rating:

54

Dimensions:

CoMo-170: 280 x 125 x 135 mm(L (with handle) x W x H)
CoMo-300: 318 x 157 x 172 mm(L (with handle) x W x H)

Weight:
CoMo-170: approx. 800 g (including batteries)
CoMo-300: approx. 1,000 g (including batteries)

Housing:

Ergonomically shaped plastic housing

Special versions:

CoMo-170 DL: with additional GM counter tube integrated into the front for measurement of the dose rate
CoMo-170/-300 G: with a thicker plastic scintillation detector for pure gamma measurements

With magnetic field sensor (only CoMo 170)
CoMo-170 BL: no PC interface for meeting the highest IT-security requirements

CoMo Software