X-ray personal dosimeter AT-138

This direct reading dosimeter is a ruggedly constructed precision instrument for measuring and reading accumulated dose of gamma and X-ray radiation exposure up to 200 mR. Applications include personal and environmental monitoring. The low-energy feature has hospital applications including fluoroscopy, portable radiography, and angiography. A hardened sapphire end window provides clean, scratch-proof viewing of measurements. This pocket-sized instrument is lightweight and has a sturdy clip to attach to an individual's pocket for constant use and ongoing protection. To ensure accurate readings, the AT-138 must be zeroed before use with a dosimeter charger, such as the AT-909 or The Charger (see the Options tab below for more information). Features Sensitive to Gamma and X-ray 0 to 200 mR Lightweight Hermetically Sealed Sturdy Pocket Clip Meets ANSI N13.5 & N322-1997 Responds Well to Fast Pulse X-Rays Low Leakage, Measures Background Specifications Size (D x L) - 1.5 x 12.4 cm (0.6 x 4.5 in.) Weight - 25 g (1.0 oz) Warranty - 2 year limited warranty Qualifications - Meets ANSI Specifications N13.5 and N322-1997 Detector - Fiber electrometer mounted in an electrically conductive plastic ion chamber Detector Housing - Very low permeability plastic, hermetically sealed Accuracy - Within 10% of true exposure Rate Response - Dose rate independent for gamma and X-ray radiation Electrical Leakage - Less than 1.0% of full scale for 24 hours at 50 °C (122 °F)