KG 50/51 SEC
Detectors
KG 50/51 SEC
Gamma Ionization Chambers
The KG 50/51 SEC ionization chambers have been
developed for high range gamma dose rate monito-
ring under accident and post accident conditions.
Gamma radiation produces charged particles in the
gas lling of the ionization chamber.
The transportation of these charged particles in the
electrical eld and their discharge on the electrodes
causes charge pulses. The charge pulses are
integrated to a DC current, which can be measured in
the external circuit.
The KG 50/51 SEC ionization chambers may be
connected to signal processing units, both, of the
RAMSYS or TK 250 family.
FEATURES
● Large measuring range up to 100 kGy/h
● Saturation proof
● Rugged construction
● Long life time
● Energy range: 60 keV to 7 MeV
● Output signal: DC current starting at 1 pA
● Up to 70 m (230 ft) of metal shielded cable,
extension cable available
● Ambiant conditions up to 205°C (401°F), 7 bar
● LOCA quali ed
APPLICATIONS
• Radioprotection of workers
○ Measurement of medium and high dose rates
for harsh environment and locations with dif cult
access
• Operational process monitoring
• Post-accident operations
RELATED PRODUCTS
• KG 220/221: ionization chambers for low and
medium dose rates
• GIM 206K: high range gamma area monitor
• TK 250: digital signal processing channel
• TKC 11/12: extension cables
radiation monitoring
systems
A Mirion Technologies Division
Featuring:
KG 50/51 SEC
TECHNICAL CHARACTERISTICS
Properties KG 50 SEC KG 51 SEC Acceptable Tolerance
Measuring range 1e–3 Gy/h … 1e+3 Gy/h
1e+3 Gy/h … 1e+5 Gy/h
Sensitivity for Cs-137
for Xe-133
1.0e–9 A/(Gy/h)
1.2e–9 A/(Gy/h)
1e–5 Gy/h … 1e+1 Gy/h
1e+1 Gy/h … 1e+3 Gy/h
2.0e–8 A/(Gy/h)
2.4e–8 A/(Gy/h)
± 20% of sensitivity
± 40% of sensitivity
± 15% at 1 Gy/h
± 15% at 1 Gy/h
Detectors
Energy range
Detector housing
Gas lling
Electrodes
Radioactive embedded source
Operating voltage
Basic current from embedded source
Temperature range
Short term temperature range
Ambient pressure
Protection index
Dimensions (Ø × L, without cable)
Weight (without cable and connector)
Weight (with 60 m cables and connectors)
Cables
Cable length
Connectors
100 keV … 3 MeV
60 keV … 7 MeV
Stainless steel
Nitrogen/Argon, 1 bar
Aluminium
Am-241, 1 kBq
800 V
1e-12 A approx.
0 … 135°C (32 ... 275°F)
205°C (401°F) for 3h
0 … 7 bar
IK07 and IP67
50.8 mm × 440 mm
(1.9 in x 17.3 in)
2.1 kg (4.6 lb)
12.8 kg (28.2 lb)
100 keV … 3 MeV
60 keV … 7 MeV
Stainless steel
Nitrogen/Argon, 20 bar
Aluminium
-
800 V
-
0 … 135°C (32 ... 275°F)
205°C (401°F) for 3h
0 … 7 bar
IK07 and IP67
50.8 mm × 440 mm
(1.9 in x 17.3 in)
2.1 kg (4.6 lb)
12.8 kg (28.2 lb)
Metal shielded cable, ceramic insulation
0.3 to 70 m on request (1 to 229 ft)
Radiall HN, others on request
± 20% of sensitivity
± 50% of sensitivity
Interfacing of the KG 50 SEC with RAMSYS components
Mirion Technologies (MGPI) SA
Route d’Eyguières
FR-13113 Lamanon
France
T +33 (0) 4 90 59 59 59
F +33 (0) 4 90 59 55 18
Since norms, speci cations and designs are subject to occasional change, please ask for con rmation of the information given in this publication.
Mirion Technologies (MGPI) Inc
5000 Highlands Parkway
Suite 150
Smyrna, GA 30082
USA
T +1 770 432 2744
F +1 770 432 9179
Mirion Technologies (MGPI H&B) GmbH
Landsberger Strasse 328a
DE-80687 Munich
Germany
T +49 (0) 89515 13-0
F +49 (0) 89515 13 169
www.mirion.com
144875EN-B
Mirion Commercial (Beijing) Co., Ltd.
Shanghai Jiangchang Commercial Branch
Room 801, 78 Jiangchang SanLu
Zhabei District, Shanghai 200436
PR of China
T +86 21 6180 6920
F +86 21 6180 6924
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