LH-III personal dosimeter radiation detector 

LH-III    x γ personal dose alarming device (also called personal dose meter) is intelligent pocket instrument. It USES the latest functions strong of single chip microcomputer is made and be become. Mainly used for monitoring X rays, and gamma rays. When measuring range, can be arbitrary set various threshold alarm value, and develop a sound and light alarm timely remind workers pay attention to safety. The instrument memory is big, can store the data about a week. The main technical instruments comply with national standards and international standards, is the present domestic similar instrument and strong function, small volume, low power consumption to wear type pocket instrument. It is widely used in medical, nuclear industry, nuclear submarine, nuclear power station, the industrial NDT, isotope application and hospital cobalt, occupational disease prevention, treatment nuclear power plants around the radiation dose fields such as residents measurement.

Main features:

"Two functions: places around the X/gamma rays dose rate (μ Sv/h), individual cumulative dose (μ Sv)

"Alarm threshold continuous adjustable, general set set every day 2.5 u Sv, each more than 50 mSv, a year by 2000 hours calculation.

Purpose is to meet the needs of personnel work high radioactivity, reduce work time.

"Data store capacity big, with 1500 hours of data storage capacity.

"Threshold continuous adjustable, with the cumulative dose, the dose rate, obstruction, and exceeds the threshold alarm function

"To be automatic records of the data, without electricity or replace the battery data is not lost

"Can display, the cumulative dose, the dose rate, work time, maximum dose rate occurred and size, cumulative dose moment threshold, the dose rate threshold parameters

"High sensitivity to the environment of the also have response, small volume, simple operation, resistance to electromagnetic interference ability

Technical index

(1) the probe: GM count tube (the compensation)

(2) show: four LCD display, the cumulative dose dose rate, threshold, maximum dose rate and happen moments, clock, etc

(3) measurement range: cumulative dose equivalent: Hp (10) 0.0 u Sv-9999 mSv

 Dose equivalent rate: Hp (10) 0.1 u Sv/h-99.99 mSv/h

 (4) intrinsic error: < 10% (2 mSv/h or so)

 (5) dose equivalent rate response: than plus or minus 20% (measuring range)

 (6) energy response: than plus or minus 30% and keV electron volts)-1.3 MeV (trillion electron volts)

 (7) the measuring time: 3 seconds

(8) memory: 64 K memory can store the data about a week, can bring the communication interface. 

Based on user needs more LH-III supporting individuals radiation dose monitoring system software and computer system.

(9) alarm function: greater than the set the cumulative dose or absorbed dose rate is sound and light alarm threshold, and symbols show jam alarm, when count tube blocked, continuous alarm constantly, and symbols show alarm sound intensity in 30 cm place about 80 dB

(10) power consumption: AAA type 1.5 V alkaline batteries section (5 th battery) environment under the continuous use 900 hours

 11) temperature characteristic: 10 °C than-10%- + 50 °C

 (12) humidity characteristics: than plus or minus 10% 0-95% RH (+ 35 °C)

 (13) shape dimension: 55 (wide) x 75 (long) x 20 (thick) (mm), (21) weight: < 90 grams