EI-R101 Environmental X, γ dose equivalent (rate) meters
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EI-R101 Environmental X, γ dose equivalent (rate) meters
EI-R101 Environmental X, γ dose equivalent (rate) meters EI-R101 Environmental X, γ dose equivalent (rate) meters

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EI-R101 Environmental X, γ dose equivalent (rate) meters

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  • EI-R101

  • Eastimage

  • EI-R101

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Product Instruction

EI-R101 is a new environmental grade X-ray and gamma radiation dose equivalent (rate) meter. The system consists of a highly sensitive composite scintillator detector and a mainframe unit with excellent energy response and radiation response performance, accurate dose equivalent measurements and a rapid response to slight increases in radiation levels.

Functional features

Large volume composite scintillator detector with built-in GM tube and wide energy response

High sensitivity and fast response to weak radioactivity

Automatic high and low range switching function, continuously adjustable dose and dose rate alarm thresholds

Large LCD display with manual or automatic sensing of the backlight

Waterproof and wear-resistant aluminum housing, corrosion-resistant, protection class IP66

Optional special tripod for outdoor spot monitoring

Application areas


Homeland Security

Nuclear Emergency Response

Environmental monitoring

Nuclear power plants

CDC and health surveillance agencies

Nuclear-related fields

Technical specifications

Physical properties

Detector type Φ76×76(mm) Large volume composite scintillator Φ13×54(mm) GM tube, built-in to the mainframe

Energy range 20kev ~ 7Mev 20kev ~ 7Mev

Dose rate range 10nSv/h ~ 100μSv/h 50keV ~ 3MeV

Sensitivity >2000cps/(μSv/h), @137Cs 1.0cps/(μSv/h)

Relative inherent error 10%, @137Cs Measurement repeatability ≤ 6%


Electrical characteristics

Power supply method Rechargeable lithium-ion battery

(> 60 hours of operation for mainframe alone, > 16 hours of operation for complete unit) Communication methods USB

Data storage Built-in mass storage (20,000 data sets)


Mechanical properties

Machine size 220H×100W×350D(mm)

Weight ≤ 2.1kg


Environmental characteristics

Protection class IP66

Operating temperature 0 C to 40 C

Operating humidity ≤ 95% (no condensing)

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