I. Introduction

X-γ radiant air specific release kinetic energy rate (absorbed dose rate) instrument for environmental monitoring is a special instrument for monitoring X-γ radiant air specific release kinetic energy rate of various radioactive workplaces. The instrument has a wide range of dose rate measurement and better energy response characteristics. It is suitable for sanitation, environmental protection, metallurgy, petroleum, chemical industry, radioactive laboratory, commodity inspection, and all kinds of places that need to detect the radiation environment and radiation protection.

1.1 Features and Functions

 High sensitivity, wide measurement range, and good energy response characteristics.

 High-speed micro-power MCU.

 Measurement data in digital display and scale style.

 Menu interface.

 Digital LCD display with bright backlight function, adjustable display contrast.

 Built-in 60,000 sets of data storage space, which can be consulted at any time, and will not be lost if the power is off.

 USB interface, data can be exported.

 Double threshold alarm function for dose rate and alarm function for detector failure.

 Power display.

1.2 Technical indicators

 Detector: φ30 * 25mm, NaI scintillation crystal.

 Measurement range: 0.01uGy/h ~ 600μGy/ h, 0.01uSv/h ~ 600μSv/h.

 Lower limit of detection energy: 30keV.

 Energy response performance: 48keV ~ 3MeV ≤ ± 30% (relative to 137Cs).

 Relative error: no more than ± 10%.

 Measurement time: continuously adjustable from 1 to 600 seconds.

 Alarm threshold: two-level alarm value, continuously adjustable.

 Unit of measurement: dose rate: nSv/h (μSv/h), nGy/h (μGy/h), CPS.

 Power consumption: two AA batteries, power consumption ≤150mW (excluding display backlight).