Ludlum Model
44-89
Alpha Beta Gamma
Square Cluster Pancake
G-M Detector
 Introduction
The Ludlum Model 44-89 is an alpha beta gamma radiation 4 pancake square cluster G-M
detector
for contamination survey.
Specifications
PART NUMBER: 47-2357
INDICATED USE: Alpha
beta gamma radiation survey
RADIATION DETECTOR: 4 ea. pancake type halogen quenched G-M
WINDOW: 1.7 ± 0.3 mg/cm² mica
WINDOW AREA:
Active - 63 cm²
Open - 50 cm²
EFFICIENCY(4pi geometry): Typically 5%-14C;
23%-90Sr/90Y;
19%-99Tc; 33%-32P;
15%-239Pu
SENSITIVITY: Typically 12,000 cpm/mR/hr (137Cs
gamma)
ENERGY RESPONSE: Energy dependent
DEAD TIME: Typically 80 microseconds
COMPATIBLE INSTRUMENTS: General purpose radiation survey meters,
ratemeters, and scalers
OPERATING VOLTAGE: 900 volts
CONNECTOR: Series "C"
(others available)
CONSTRUCTION: Black ABS plastic with anodized aluminum back and stainless
steel protective screen (79% open)
TEMPERATURE RANGE: -4° F(-20° C) to 122° F(50° C)
May be certified for operation from -40° F(-40° C) to 150° F(65° C)
SIZE: 3.3" (8.4 cm) H X 5" (12.7 cm) W X 6.9" (17.5 cm) L
WEIGHT: 1.9 lbs (0.8kg)
 This Product is CE Certified
Replacement Parts
Technical Information
Other Ludlum Products
Ludlum Information
For more information or to request a quotation,
please contact us
by phone at: (865)
947-5123 or by email at:
sales@deqtech.com.
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