




NM01W138
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The Model W138 Direct-Reading Dosimeter is a precision instrument designed to measure and directly read accumulated doses of gamma and x-ray radiation exposure. With a range of 0-200 mR, this rugged and hermetically-sealed dosimeter is suitable for diverse applications, including military use, as it meets ANSI standards N13.5 and N322. The Model W138 is engineered with a durable carbon-fiber barrel construction, ensuring resistance to shock, vibration, and immersion. Featuring a linear scale, it provides real-time monitoring and is easily attached with a metal clip for convenient placement.
Key Features:
- Measurement Range: 0-200 mR for direct gamma and x-ray dose readings.
- Durability: Meets military standards for shock, vibration, and immersion.
- ANSI Compliant: Satisfies ANSI N13.5 and N322 specifications.
- Precision Fiber-Electrometer: Provides accurate dose readings with +/- 10% accuracy.
- Sturdy Construction: Carbon-fiber liquid polymer barrel is lightweight yet impact-resistant.
- Wide Temperature Range: Operates between -20°C and +50°C with humidity resistance up to 90%.
- Extended Shelf Life: 20-year shelf life and a two-year limited warranty.
Technical Specifications:
- Radiation Detected: Gamma and X-ray (16 keV to 6 MeV)
- Accuracy: ±10% of true exposure
- Temperature Range: -20°C to +50°C
- Dimensions: 4.5" (12.4 cm) Length x 0.6" (1.5 cm) Diameter
- Weight: 1.0 oz (25 grams)
- Finish: Matte gray with metal clip
- Warranty: Two-year limited warranty
Additional Models Available:
- W138S: 0-2 mSv range with a sapphire window.
- W500: 0-500 mR/hr range.
- 725: 0-5 R range.
- 730: 0-20 R range.
- 742: 0-200 R range.
- 746: 0-600 R range.
Applications: Ideal for radiation safety monitoring in medical facilities, research labs, military applications, and field environments where real-time dose monitoring is essential.