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The differential pressure switch DTV500X (pressure switch), manufactured by REGIN (Sweden), is designed to control the operation of the fan, the state of the filter, or other solutions in ventilation systems. With an adjustment range of 50 ... 500 Pa.
Pressure measurement is carried out by measuring the pressure drop across the sensor membrane. The setpoint is set using the knob under the housing cover. A change in pressure affects the membrane, which is associated with a switching contact. Changes in the position of the membrane switch the relay in the event of a deviation of pressure from the set value.