(800) 622-0828 (US, CA)
(325) 235-5494
(325) 235-4672

Field Service Support

To search products by model number, enter "m..."
(Ex: Enter "m3" to search for Model 3.)

Health Physics Medical Physics Metal Recycling Monitoring Systems Emergency Response

All Products

Portable Survey Meters

Personal Radiation Meters

No subcategories

Benchtop Meters

No subcategories

Scalers / Counters

No subcategories

Pulsers

No subcategories

Detectors

Monitoring Systems

Ground/Floor Surveying

No subcategories

Sample Counting

Tritium Monitoring

No subcategories

NORM Kits

No subcategories

Dosimetry

Accessories

Medical Physics

Emergency Response Kits

Need Help?

Unsure about which instrument is best for your application?

Find your region's Ludlum representative or dealer.

OR

Contact Ludlum Sales:

(800) 622-0828 (USA Toll Free)

(325) 235-5494

Newsletter

alpha_beta_gamma_4b9fa576892f9

Model 44-26

Alpha-Beta-Gamma Foot Monitor Detector

Part Number: 47-1509

Specifications

Indicated Use	Alpha, beta, gamma foot monitor
Detector Type	3 pancake type, halogen quenched GMs
Window	1.7 ± 0.3 mg/cm² mica
Window Area	Active: 46 cm² (7.1 in²) Open: 27 cm² (4.2 in²)
Efficiency (4π)	¹⁴C: 5% ⁹⁰Sr/⁹⁰Y: 22% ⁹⁹Tc: 19% ³²P: 32% ²³⁹Pu: 15%
Energy Response	Energy dependent
Typical Sensitivity	9900 cpm per mR/hr
Typical Background (10 µR/hr field)	180 cpm
Operating Voltage	900 V
Construction	Aluminum housing
Size (H x W x L)	27.4 x 17.8 x 22.9 cm (10.8 x 7 x 9 in.)
Weight	2 kg (4.4 lb)

Related Products

alpha_beta_gamma_4b9fb26746529

Model 44-25

Ludlum Measurements, Inc.
501 Oak Street
Sweetwater, TX 79556
USA

(800) 622-0828 (US & Canada)
(325) 235-5494
(325) 235-4672

Directions to Facilities

International Contacts

Follow Us

© 2025 Ludlum Measurements, Inc.