A dosimeter from a radio designer `` IRI-1 '' (Trio).
Radio and electrical constructors, sets.IndicatorsThe dosimeter from the IRI-1 radio designer (Trio) has been produced since the beginning of 1990 by the Baltiets Production Association in the city of Narva, Estonia. Radioconstructor contains a complete set 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 to estimate the level of contamination by gamma radiation of food and animal feed from 3700 Bq / kg (Bq / l) in areas with natural background radiation and contaminated with long-lived nuclides, as well as in the places where ROOs are located. Gamma radiation is recorded by sound signaling and a pointer device with a scale divided into three colored sectors. If the arrow of the device is in the green sector of the scale (dose rate of gamma radiation from 0 to 60 μR / h), it 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 for 4 batteries DO-0.6 or 2 sources ML-2325. When registering a natural background, a set of power sources is enough for 60 hours of continuous operation. The weight of the device is 250 grams. The manufacturer also produced the assembled dosimeter under the name "IRI-1" (Bereg).
