1. Make sure that there is no obstruction between the detection port of the Radiation Detector and the measured radioactive source during use.

2. The Radiation Detector should not be used with the measurement window facing the sun when measuring the reflected source, as this may have an effect on the readings.

3. The probe should be mounted in the mesh window on the back of the Radiation Detector and the mesh window should be aligned with the measured object during the measurement.

4. When the mode switch is in the mR/hr, μSV/hr or CPMCPS state, the reading displayed by the instrument will be displayed every three seconds, which may result in significant fluctuations in the radiation levels displayed at low count rates.