{"product_id":"tested-ludlum-model-3-survey-meter-geiger-counter-radiation-detector-w-44-7","title":"TESTED Ludlum Model 3 Survey Meter Geiger Counter Radiation Detector w\/ 44-7","description":"\u003cp data-start=\"141\" data-end=\"226\"\u003e\u003cstrong data-start=\"141\" data-end=\"226\"\u003eTested Working Ludlum Model 3 Radiation Survey Meter Geiger Counter w\/ 44-7 Probe\u003c\/strong\u003e\u003c\/p\u003e\u003cp data-start=\"228\" data-end=\"362\"\u003eUsed; see photos for condition. Tested working; see photos for operation. Includes Ludlum Model 3 survey meter with Ludlum 44-7 probe and connecting cable. Does not include batteries, radiation sources, or anything else.\u003c\/p\u003e\u003cp data-start=\"364\" data-end=\"1191\"\u003eThe Ludlum Model 3 is a rugged general-purpose handheld analog radiation survey meter designed for use with external GM and scintillation detectors. With the included Ludlum 44-7 probe, this setup is configured for alpha, beta, and gamma surveying using an end-window Geiger-Mueller detector. The Model 3 is Ludlum’s long-running industrial ratemeter platform, featuring a cast aluminum housing, separate battery compartment, metal carry handle, four-decade analog range selector, fast\/slow response switch, audio on\/off, battery test, and count reset. Ludlum lists battery life as typically greater than 2000 hours with alkaline D cells, and notes that measurement range depends on the specific detector and meter-face configuration installed.\u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp data-start=\"1193\" data-end=\"1781\"\u003eThe included Ludlum 44-7 is an end-window GM detector intended for alpha, beta, and gamma survey work and sample counting. Ludlum specifies a 6 cm² active window area, 5 cm² open area, and a thin mica window rated at 2.0 ± 0.3 mg\/cm², making this probe useful for contamination surveys, wipe-test checking, general radiation safety work, lab decommissioning support, and other field or bench survey applications where a dependable analog meter\/probe combo is preferred. Ludlum lists typical 137Cs gamma sensitivity for the 44-7 at 2100 cpm per mR\/hr. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp dir=\"ltr\" style=\"margin-top:0; margin-bottom:0;\"\u003e \u003c\/p\u003e\u003cp data-start=\"1783\" data-end=\"2102\"\u003eUnit is offered as used and tested working only; no recent calibration is implied. Buyer is responsible for verifying suitability, calibration (if needed), and regulatory compliance for their intended application.\u003c\/p\u003e","brand":"Lab Liquidators Store","offers":[{"title":"Default Title","offer_id":53332974403876,"sku":"SP111116523","price":779.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/5289\/2964\/files\/406845391861-0.jpg?v=1776438346","url":"https:\/\/store.labliquidators.com\/products\/tested-ludlum-model-3-survey-meter-geiger-counter-radiation-detector-w-44-7","provider":"Lab Liquidators Store","version":"1.0","type":"link"}