Beta-gamma radiometers DP-11-A and DP-11B.

Dosimeters, radiometers, roentgenometers and other similar devices.Beta-gamma radiometers "DP-11-A" and "DP-11B" were produced since 1958 and 1959. The devices are the same with a few exceptions. "DP-11B" is an improved "DP-11A". Measurement ranges "DP-11-A" 50 ... 600,000 dec / min * cm2 for beta radiation and 0.02 ... 30 mR / h for gamma radiation. The probe head has two rotatable shells, in which slots are cut to coincide with the slots of the inner cup in a fixed position. This position is used to measure low infection rates. Next, the DP-11B radiometer is described. Designed to measure the degree of beta-gamma contamination of soil surfaces, uniforms and human skin, the presence of radioactive substances in samples of water, food, fodder. Also used to measure the power of gamma radiation. It can be used for radiation reconnaissance of the area from the air. The device has a measuring range of the degree of contamination of surfaces with beta-gamma-active substances 150 ... 1 million dec / min * cm2; range of measurements of dose rates of gamma radiation 0.03 ... 20 mR / h. Kit weight 13.2 kg. Working set weight (remote control, probe, telephones, belts) 5.4 kg. The dimensions of the control panel are 260x115x175 mm, the length of the probe is 1 m. The time for preparing the device for operation is 3 minutes. The settling time of the instrument readings during measurements on the 2nd sub-range is 0.5 minutes; on 1 sub-range for 1 minute.