Fluke Biomedical 956A-201-M2 - Manual (Page 7)

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1.2 SPECIFICATIONS, G-M DETECTOR, MODEL 897A SERIES
Dimensions (Approximate 7 1/8 x 3 inches (18.1 x 7.6 cm)
Weight (Approximate) 2.5 lbs.
Housing Material
897A-210, 897A-220, 897A-230
897A-211, 897A-221, 897A-231
Aluminum, weatherproof
Stainless Steel, weatherproof
Fill Gas:
897A-210, 897A-211
897A-220, 897A-221
897A-230, 897A-231
Neon/Argon/Halogen
Helium/Neon/Halogen
Helium/Neon/Halogen
G-M Tube Wall Thickness:
897A-210, 897A-211
897A-220, 897A-221
897A-230, 897A-231
40 mg/cm
2
80 mg/cm 2
80 mg/cm 2
Mounting Wall mount
Mating Connectors 897A-2x0:
92-7005-17A, 12 Pin Female
92-7005-12A,
Bushing
92-7005-9A, Clamp
897A-2x1 (stainless steel):
92-7005-15A, 12 Pin Female (stainless steel)
92-7005-12A,
Bushing
92-7005-13A, Bushing
Required Cable P/N 50-100 or substitute with two coaxial
conductors, two twisted pairs, and overall shield.
External Pressure Limit 30 psig
Storage Temperature -10° to 122°F (-23° to 50°C)
Operating Temperature -10° to 122°F (-23° to 50°C)
Relative Humidity 0 to 95% non-condensing
Operating Voltage 500 – 650 Vdc (supplied by digital ratemeter)
Plateau Length 100 – 150 Vdc
Plateau Slope:
897A-210,
897A-211
897A-220, 897A-221
897A-230, 897A-231
0.1%/V
0.2%V
0.3%V
Dead Time (Approximate)
897A-210,
897A-211
897A-220, 897A-221
897A-230, 897A-231
45 microseconds
28 microseconds
20 microseconds
Detector Element Life Exceeds 1000 hours at full-scale
Energy Dependence of Reading +/- 15% from 80 keV to 1.5 MeV
Detector Accuracy ± 20% of actual dose for Cs-137
Radiation Detected Gamma rays, X-rays