Product Instruction
EI-R104 Alpha-Beta Surface Contamination Monitor is a portable surface contamination monitoring device. The instrument uses a
plastic scintillator probe coated with ZnS and is designed to detect contamination on surfaces or the alpha and beta contamination of wiped testing samples. It can be used to test contamination on the surface of worktops, floors, walls, clothing, human skin and other surfaces in radioactive workplaces or laboratories. The instrument can be used either fixed or mobile.
Functional features
– Large LCD display with manual or automatic sensing of the backlight
– Lightweight, 4 keys for one-handed operation
–– Shortcut keys to switch between α , β and α+β measurements without additional probe
– User friendly interface with password protected advanced menu
– 26 freely editable nuclide libraries with automatic background deduction
– Test stand to protect the instrument from contamination, with optional calibration piece
– Optional GM tube for extended gamma detector capability
Application areas
– Homeland security – Environmental monitoring – CDC and health surveillance agencies
– Nuclear emergency response – Nuclear power plants – Nuclear-related fields
Technical specifications
Physical properties
Detector type ： ZnS coated thin film plastic scintillator detector with optional GM tube detector
Single probe incident window area ： 170cm2
Unit： cps, Bq, Bq/cm2
Background deductions ： Deductive and non-deductive background optional, background measurement time settable
Background count rate ： α: < 0.1cps, β : < 20cps
Detector efficiency： 241Am: ≥ 33%, 90Sr/ 90Y: ≥ 35%
Repeatability： < 10%
Relative inherent error： ≤ ±25%
Measurement time ： Timed measurement function, time 1s to 999s continuously adjustable
Alarm methods ： Audible and visual alarm
Nuclide Library： 26 nuclei with reset, auto-calibration
Electrical characteristics
Power supply method ： 2 alkaline 5 or NiMH rechargeable batteries for more than 35 hours of continuous operation
Communication methods ： USB, optional WIFI and Bluetooth
Data storage ：More than 1000 measurement data can be stored
Mechanical properties
Machine size ： 158H×302W×132D(mm)
Weight： 870g (including battery)
Environmental characteristics
Operating temperature ： -20 C to 50 C
Operating humidity： ≤ 90% (30 C, no condensing)