Pressure switch DEM-105-02
Pressure switch DEM-105-02. Actuation limit: 100kPa (boost). Designed for monitoring and two-position regulation of the pressure of liquid and gaseous media in refrigeration units used on ships, railroad and road transport, as well as in stationary installations and other systems and devices. Controlled media: freons, air, oils and other non-aggressive media. For DEM102-1-01A, DEM102-2-05A devices, the controlled environment can be ammonia. DEM-105-02 principle of operation The principle of operation of pressure switch sensors is based on comparing the forces created by the pressure or pressure difference of the controlled medium on the sensitive system and the forces of elastic deformation of the setpoint adjuster (spring) and the return zone. Actuation of the pressure switch (opening or closing of contacts occurs when the controlled pressure or the pressure difference reaches the setpoint value set on the scale. The return of the contacts of the DEM-105-02 sensor-relay to the initial position occurs when the medium pressure changes by a value equal to the value return zones.DEM-105-02 series pressure switches are designed for monitoring and two-position regulation of pressure of liquid and gaseous media in alarm systems, protection and control of diesel engines and ship systems, diesel locomotives, as well as in refrigeration plants and other systems, including to replace the KRM type relay with a pressure sensor.Applied in boilers, heat points, heating, ventilation and air conditioning systems, for automation of pumping, compressor and refrigeration plants, as well as for the regulation of technological processes in various industries. Controlled media pressure switches DEM-105- 02: air, freons, oils, diesel new fuel, water.
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