Bereg (IRI-1) 1990
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The dosimeter from the radio designer "IRI-1" (Trio) has been produced since the beginning of 1990 at Baltiets Production Center in the city of Narva, Estonia. The radio designer contains a complete kit for assembling an individual radiation indicator. The assembled device is designed to assess the background radiation in the range from 10 to 120 μR / H. Allows you to estimate the level of pollution by gamma radiation of food and animal feed from 3700 Bq / kg (Bq / l) in areas with a natural radiation background and contaminated with long-lived nuclides, as well as in the places of ROO. Gamma radiation is recorded by an audible alarm and a dial gauge with a scale divided into three colored sectors. If the arrow of the device is in the green sector of the scale (gamma radiation dose rate from 0 to 60 μR / h), this means that the power is within the background value; if in the yellow sector - "Attention" (dose rate from 60 to 120 μR / H); in red - "Dangerous" (dose rate over 120 μR / h). Power supply 4 DO-0.6 batteries or 2 ML-2325 sources. When registering the natural background, a set of power supplies lasts for 60 hours of continuous operation. The mass of the device is 250 grams. The manufacturer also produced the assembled dosimeter under the name "IRI-1" (Coast). ,null,ru,null,null,null,null
Documentation:
Information from collection of Valery Khartchenko