Ludlum Model 43-40-3

  Alpha Radiation Air Proportional Detector - 253 cm²

Introduction

The Ludlum Model 43-40-3 is an air Alpha Radiation Air Proportional Detector for alpha radiation survey.

Specifications

PART NUMBER: 47-3435

INDICATED USE: Alpha radiation survey
WINDOW: 0.4 mg/cm² aluminized mylar
WINDOW AREA:
        Active - 320 cm²
        Open - 253 cm²
EFFICIENCY(4pi geometry): Typically 10%- ²³⁹Pu
BACKGROUND: 3 cpm or less
COMPATIBLE INSTRUMENTS: Ludlum Model 12, Model 16, Model 18, Model 2000, Model 2200,

Model 2221, Model 2241-2, Model 2350-1
OPERATING VOLTAGE: Altitude sensitive
        Sea level - 2050 volts
        2000 feet - 2000 volts
        5000 feet - 1925 volts
        7000 feet - 1875 volts
COUNTER THRESHOLD SETTING: 2 mV
CONNECTOR: Series “C” (others available)
CONSTRUCTION: Anodized aluminum body with aluminum screen (65% 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: 4" (10.2 cm) H X 5.5" (14 cm) W X 9" (23 cm) L
WEIGHT: 3.5 lb (1.59 kg)

Technical Information

• Model 43-40-3 Data Sheet

• Model 43-40-3 Manual

Other Ludlum Products

• Other Ludlum Products

Ludlum Information

• Ludlum Introduction

• Ludlum Resources

• Ludlum Warranty

• Ludlum Repair and Calibration

• Ludlum Training