Summary
Radiation Detectors for Tubes - Model 43-94 1/2" Cylindrical Gas Proportional Pipe Probe: A cylindrical gas proportional detector for alpha and beta surveys, designed for larger pipes and tubing. Salient Characteristics: Radiation Detected: Alpha and Beta • Detector Type: P10 (10% methane, 90% argon) gas proportional • Dimensions: 1.25 cm (0.5 in) Outer Diameter, 21.9 cm (8.6 in) Overall Length, 15.2 cm (6 in) Active Length • Weight: 0.64 kg
(1.4 lb) • Window: 0.8 mg/cm² thick, 60.8 cm² active area • Efficiency (4π): 13% for Tc-99 (beta), 10% for Th-230 (alpha) • Operating Voltage: 1100-1400V (alpha), 1450-1750V (beta) • Connectors: Series "C" signal connector, fittings for 1/8 in. hose gas connection. See attached file.