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Pipe Detectors

Ludlum Measurements offers both Alpha-Beta Gas Proportional and Gamma Scintillator Detectors for use in surveying pipes and tubing. All detectors listed here include an eye on one or both ends to attach a pull rope or cable.

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Alpha-Beta Gas Proportional Detectors

Note: The maximum recommended cable lengths for alpha-beta gas proportional detectors is 3.66 m (12 ft.). Longer lengths can be used but detector performance will be reduced.

Detectors
Suggested Instruments

Detectors
Suggested Instruments

Detectors

Product	Description	Part Number
Model 43-94	Cylindrical Alpha-Beta Gas Proportional Detector Size (Dia. x L): 1.25 x 21.9 cm (0.5 x 8.6 in.) Active Window Area: 60.8 cm²	47-2569
Model 43-98	Cylindrical Alpha-Beta Gas Proportional Detector Size (Dia. x L): 3.8 x 24.1 cm (1.5 x 9.5 in.) Active Window Area: 170.3 cm²	47-2596
Model 43-98-5	Cylindrical Alpha-Beta Gas Proportional Detector Size (Dia. x L): 12.1 x 27.6 cm (4.75 x 10.9 in.) Active Window Area: 547.2 cm²	47-3928
Model 43-111	Cylindrical Alpha-Beta Gas Proportional Detector Size (Dia. x L): 2.5 x 21.7 cm (1 x 8.5 in.) Active Window Area: 121.6 cm²	47-2780
Model 43-126	Cylindrical Alpha-Beta Gas Proportional Detector Size (Dia. x L): 8.9 x 26.2 cm (3.5 x 10.3 in.)	47-3050

Suggested Instruments

Model	Description	Part Number
Model 3002	Alpha-Beta Digital Survey Meter	48-4037
Model 3003 Series	Multi-Detector Digital Survey Meter	48-4289
Model 2360	Alpha-Beta Analog Datalogging Meter with Digital Scaler	48-2872

Detectors
Suggested Instruments

Detectors

Product	Description	Part Number
Model 44-157	Gamma Scintillator Detector 5.1 x 5.1 cm (2 in. x 2 in.) NaI(Tl) Scintillator Size (Dia. x L): 8.9 x 15.5 cm (3.5 x 6.1 in.) Sensitivity: 900 cpm per µR/hr	47-3332
Model 44-159	Gamma Scintillator Detector 18 x 18 mm (0.7 x 0.7 in.) CsI(Tl) Scintillator Size (Dia. x L): 2.5 x 7.1 cm (1 x 2.8 in.) Sensitivity: 120 cpm per µR/hr	47-3346
Model 44-159-1	Gamma Scintillator Detector 18 x 18 mm (0.7 x 0.7 in.) CsI(Tl) Scintillator Size (Dia. x L): 2.2 x 8.1 cm (0.875 x 3.2 in.) Sensitivity: 120 cpm per µR/hr	47-3820
Model 44-162	Gamma Scintillator Detector 7.6 x 7.6 cm (3 x 3 in.) NaI(Tl) Scintillator Size (Dia. x L): 19.1 x 24.1 cm (7.5 x 9.5 in.) Sensitivity: 2300 cpm per µR/hr	47-3385

Suggested Instruments

Model	Description	Part Number
Model 3000	Digital Survey Meter	48-4035
Model 3	Analog Survey Meter	48-1605
Model 12	Analog Survey Meter	48-1609
Model 177	Analog Benchtop Meter	48-1632
Model 2200	Scaler Ratemeter	48-1651