RIS 121 level indicator sensors are designed for continuous monitoring of the level of liquid and solid (bulk) media, as well as signaling the achievement of the maximum levels of the controlled medium at two specified points.
Sensors – indicators of the level of RIS 121 meet the requirements of the Rules of the Russian Maritime Register of Shipping and the Russian River Register, have versions for use at nuclear power facilities.
Sensors-indicators belong to the type of capacitive devices. The principle of operation is based on the dependence of the electrical capacitance of the sensor element on the level of the controlled environment.
The sensors-indicators of the level of FIGURE 121 include primary and secondary converters. Depending on the design of the primary converter, the connection method, the operating temperature range, the maximum operating pressure, the length of the submerged part, the indicator sensors have different versions.