MS24A Electronic Personal Dosimeter
Functional Highlights
- Tissue-equivalent plastic scintillator detector
- Gamma sensitivity equivalent to large-volume GM-tubes
- Fast response to background changes
- IEC 61526 and ANSI N42.20 standards compliant
- Shockproof and weatherproof rugged housing
- Functions on one AA-type battery
- Designed for group operation and programming
Potential Applications
- Nuclear Power Plant personnel and related industries
- Wide range of medical applications: hospitals and clinics
- Versatile EPD for first responders in case of accidents
- Security checkpoints using accelerators and baggage scanners
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Description
The new Micasensor MS24A electronic personal dosimeter is primarily designed as a versatile device for personnel of Nuclear Power Plants (NPPs). Operating at various energies and dose rates, it contains a plastic scintillator detector whose energy response is close to that of human tissue. With superior sensitivity compared to semiconductor p-n junction detectors, the MS24A provides fast and accurate measurements in variable radiation fields, is capable of correctly measuring pulsed radiation from NDT and medical equipment, and demonstrates better performance at low background levels.
The MS24A offers several data-interface options: USB or RS-485 for use as an individual dosimeter or within a dose management system at NPPs, as well as optional Bluetooth LE for wireless mesh networks. Powered by a single AA-type regular or rechargeable battery easily replaceable in the field, the MS24A is convenient for use in emergencies — for example by first responders. Furthermore, the detector's sensitivity in many scenarios is sufficient to replace gamma search instruments (PRDs).
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Specifications — Radiological
Radiological Detector type Pb-doped plastic scintillator Dose rate measurement range 0.1 μSv/h – 10 Sv/h Accuracy within the dose rate measurement range, not exceed 20% Hp(10) dose equivalent measurement range 1 μSv – 20 Sv Accuracy within Hp(10) dose measurement range (accuracy + linearity), less than 20% Energy range 40 keV – 7 MeV Energy response 30% -
Specifications — Operational & Functional
Operational Display units μSv, mSv, Sv Data interfaces USB or RS-485 Internal memory up to 2000 events Type of alarms sound, light, vibration Cleaning housing easy to decontaminate Power supply AA-type Alkaline or rechargeable battery Operation time from one battery charge, not less 90 days Standards compliance ANSI N42.20, IEC 61526:2024 Functional Clip may be reversed to meet different wearing scenarios (within the pocket or outside) Designed for automatic charging and readout when used with group storage rack at NPPs Optional Bluetooth Low Energy for operation in mesh wireless networks -
Specifications — Environmental & Physical
Environmental Temperature from -10 to +50°C Humidity up to 95% at +35°C Atmospheric pressure from 84 to 106.7 kPa Ingress protection IP65 Physical Size, mm 23 × 63 × 91 (without clip) Weight, g 85
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