Owner manual

Featuring:

radiation monitoring

systems

A Mirion Technologies Division

KG 220 SEF

Detectors

KG 220 SEF

Gamma Ionization Chamber

The KG 220 SEF ionization chamber has been deve-

loped for low and medium range gamma dose rate

monitoring in nuclear facilities. There are two versions

with optimized energy response for measuring dose

rates in Sievert or Gray units. Gamma radiation pro-

duces charged particles (elctrons and gas ions) in the

gas  lling of the ionization chamber. Their discharge

on the electrodes causes charge pulses. These

charge pulses are integrated to a DC current, which

can be measured in the external circuit.

The KG 220 ionization chambers may be connected

to signal processing units of the RAMSYS or TK 250

family.

APPLICATIONS

• Radioprotection of workers

○ Measurement of low and medium dose rates in

nuclear facilities for harsh environment conditions

PAGE 1
KG 220 SEF Detectors KG 220 SEF Gamma Ionization Chamber The KG 220 SEF ionization chamber has been developed for low and medium range gamma dose rate monitoring in nuclear facilities. There are two versions with optimized energy response for measuring dose rates in Sievert or Gray units. Gamma radiation produces charged particles (elctrons and gas ions) in the gas filling of the ionization chamber. Their discharge on the electrodes causes charge pulses.
PAGE 2
KG 220 SEF Detectors TECHNICAL CHARACTERISTICS Properties KG 220 SEF-Gy KG 220 SEF-Sv Tolerance Conditions Measuring range 1e–7 Gy/h … 1 Gy/h 1 Gy/h … 1e+2 Gy/h 1e–7 Sv/h … 1 Sv/h 1 Sv/h … 1e+2 Sv/h +5% / -20% acceptable deviation of sensitivity +5% / -40% acceptable deviation of sensitivity Sensitivity Energy range 1.1e–6 A/(Gy/h) 80 keV … 3 MeV 0.