The GRAETZ ED150 is a robust and portable personal dosimeter that continuously measures and alerts you to gamma and X-ray radiation. Designed for reliable, field-based use, it combines fast response with easy operation and high accuracy.

Key features

• Based on an energy-compensated Geiger-Müller counter for reliable and accurate detection of Hp(10), which represents deep personal radiation dose.

• Angled LCD display for optimal and safe reading.

• Indication of dose rate via button press, with option for acoustic single-pulse notification.

• Four factory-set alert thresholds for both accumulated dose and dose rate; adjustable upon request.

• Clear menu navigation and storage of the last measurements and settings even when changing batteries.

• Designed for continuous self-testing and monitoring for high reliability.

• IP67 rated – waterproof up to 0.5 meters and dustproof, easy to disinfect.

• Powered by three LR1 (1.5 V) batteries with up to one year of operation under normal background radiation.

Technical details

• Dose range: 0.1 µSv – 10 Sv

• Dose rate range: 1 µSv/h – 1.5 Sv/h

• Energy sensitivity: 55 keV – 3 MeV

• Alarm levels (dose): 200 µSv, 500 µSv, 1000 µSv, 2000 µSv (adjustable on request)

• Alarm levels (dose rate): 7.5 µSv/h, 25 µSv/h, 40 µSv/h, 300 µSv/h (adjustable if necessary)

• Dimensions: approx. 136 × 40 × 17 mm

• Weight: approx. 140 g including batteries

• Operating temperature: –20 °C to +60 °C

• Certified and approved by PTB.