Calibration of a Radioisotope Device

Abstract

The article provides data on radioisotope devices, including a radioisotope level meter – a radioisotope indicator of the level of petroleum coke and a radioisotope density meter. The article describes the methods of calibration of radioisotope density meter Gammapilot (Endress+Hauser AG, Switzerland). An ionizing radiation source of ¹³⁷Cs GCS7.021.1 type with an activity of 3.06 × 10⁹ Bq (82.7 mCi) was used to complete the radioisotope densitometer, and its tightness was checked using the immersion method with 8% ortophosphoric acid as the immersion liquid. To calibrate radioisotope densitometers, simulator stands and liquid simulators of various densities were made based on a mixture of tribromomethane and ethyl alcohol solutions. Radioisotope density meters were calibrated for low pulp emulsion density, medium pulp emulsion density, and high pulp emulsion density. In calibrated radioisotope density meters, upon reaching the lower limit of the pulp density in the detection unit, an output electrical signal appears at the “0–5 mA” connector, and when the upper limit of the pulp density is reached, an output electrical signal appears at the “4–20 mA” connector.