Contamination Monitor CoMo 170

The CoMo 170 is an efficient, portable contamination monitor equipped with an innovative detector technology for the high sensitive and nuclide referred measurement of surfaces regarding alpha, beta and gamma contaminations. CoMo170

The detector technology with thin plastic scintillation detector completely works without gas-filled or gas flow proportional detectors, thus avoiding expensive costs for consumable gas or for repair of Xenon detectors.

Measurement of alpha, beta and gamma radiation with only one detector. The measuring system automatically identifies the existence of alpha radiation. It is possible to effect a simultaneous, selective measurement of alpha and beta/gamma contaminations.

A defective detector foil can be replaced by the user himself. An expensive repair by the manufacturer is not necessary.

The nuclide referred efficiencies of the scintillation detector can be compared with the efficiencies of common counter tubes.

Features:

thin-layer plastic scintillation detector with ZnS coating, with integrated photo multiplier and detector electronics, 170 cm² detector surface, mechanically protected by a honeycombed protective grid
ergonomically and modern designed housing with large LC-display (128 x 64 pixels), illuminable
easy to operate operator surface, touch -sensitive keyboard with 5 function keys
indication of measured values either in cps or nuclide referred in Bq or Bq/cm², digital and analog (bar graph) display of measured values
calibrated reference nuclide file, free expandable
important measurement parameters and settings are secured by a code word
integrated storage of measured data, optionally software for data readout and processing
integrated calibration software
possibility to connect various external detectors, e. g. for dose rate measurements
automatic detector identification
low weight, approx. 750 g
stationary use in wall station (option) with power supply

Technical Data:

Detector type:	thin-layer plastic scintillation detector with ZnS coating
Detector size:	170 cm² (mechanically protected by a honeycombed protective grid)
Background count rate:	alpha: approx. 0,1 cps beta/gamma: approx. 15-25 cps
Background count rate subtraction:	with adjustable measuring time
Alarm:	for each nuclide separately adjustable, acoustic warning
Display of measured values:	either in cps or nuclide referred in Bq or Bq/cm² digital and analog (bar graph) display
Nuclides:	25 nuclides, pre-set calibration factors, variable acc. to user requirements (user-specific nuclides can be added), integrated auto-calibration
Measuring time:	continuous (adjustable attenuation), for stationary operation adjustable in sec
Display:	large, graphic LC-display (128x64 pixels), with illumination (illumination time adjustable)
Temperature range:	-10 °C up to +40 °C, special version up to -20 °C
Power supply:	2 batteries, AA Mignon or corresponding accumulators (NiCd, NiMH), rechargeable by recharger unit or by wall station during stationary use (option)
Dimensions: Weight:	(280 x 125 x 135) mm / length including handle approx. 750 g (batteries included)
Interfaces:	serial interface RS-232 recharge / mains operation external detectors
PDF-file:	CoMo170_en.pdf (143 KB)

Efficiencies of various radionuclides

(average values of measurements with 100 cm² substances)

The nuclide referred efficiencies of the scintillation detector are comparable with those of common GM-tubes.

table of efficiencies of various radio nuclides

Special edition: CoMo 170F
for nuclear operations at fire brigades

CoMo170F

Different technical data:

indication of measured values : cps, not nuclide referred in Bq or Bq/cm²
alarm: acoustic warning
software: fire brigades specific adaption
all functions secured by a password
additional alarm threshold for triple background count
no external detectors
PDF-file: CoMo170_en.pdf (144 KB)

Contamination Monitor CoMo 170

Features:

Technical Data:

Efficiencies of various radionuclides

(average values of measurements with 100 cm² substances)

Special edition: CoMo 170F

for nuclear operations at fire brigades

Different technical data:

[Copyright 2011 GRAETZ Strahlungsmeßtechnik GmbH]