BS EN 61017. Radiation protection instrumentation. Transportable, mobile or installed equipment to measure photon radiation for environmental monitoring Ionization counters, Monitors, Contamination meters, Portable, Transportable, Fixed, Nuclear safety, Environmental health, Gamma-radiation, Radiation protection, X-rays, Errors, Error analysis, Radiation hazards, Radiation measurement, Nuclear technology, Definitions, Type testing, Electrical testing, Environmental testing, Testing conditions, Calibration, Certificates of conformity