Dozimetr Instruktsiia: Pripiat

: To measure surface contamination, remove the rear filter cover to expose the Geiger-Müller tubes directly to the surface.

The "Pripyat" (Pripyat) RKSB-104 is a classic Soviet-era portable radiometer-dosimeter designed for personal radiation monitoring. It is primarily used to detect Gamma radiation, Beta-particle contamination on surfaces, and the specific radioactivity of Caesium-137 in substances.

: Inspect the liquid-crystal display (LCD) and body for damage before use. Basic Measurement : pripiat dozimetr instruktsiia

: Measure the ambient background radiation in Sv/h (0.1 to 99.99 range) or R/h (10 to 9999 range).

: The device can estimate the specific activity of substances in Ci/kg or Bq/kg. Key Technical Specifications Range / Detail Gamma Dose Rate 0.1 – 99.99 Beta Flux Density 6 – 6000 particles/( Alert System 31 programmable sound alarm thresholds (0.1–16 $\mu$Sv/h) Detectors Built-in Geiger-Müller counters Important Maintenance Notes : To measure surface contamination, remove the rear

: For low-level measurements, it is recommended to repeat and average results to account for stochastic variation in radiation counts.

: Never use solvent-based cleaners; use only a water-dampened cloth to avoid damaging the polymeric case. : Inspect the liquid-crystal display (LCD) and body

You can download the full or the Russian Original Manual (PDF) for more detailed schematics and measurement formulas.