SENSIT SHV 1 OUT R - flood sensor, relay output, 24VAC/DC

 

SENSIT SHV 1 OUT R - Flood sensor, relay output, 24VAC/DC
Flood sensors (level sensors) consist of metal sensing electrodes and a plastic head in which the evaluation electronics are located. The connection of the 24 VDC or 24 VAC supply voltage and at the same time the idle state at the output of the relay or transistor is indicated by a green LED. A fault condition (creation of a conductive connection between the electrodes) is signaled by a red LED inside the box and by a change in the state of the output transistor or relay contact. The relay output is selected by placing a short-circuit jumper (jumper) on the PCB. All metal parts are made of stainless steel DIN 1.4301, the basic length of the sensing electrodes is 50 mm. The supply cables are connected to the terminal block via the outlets that are part of the plastic head. The basic material of the head is POLYAMIDE.

Flood sensors (level sensors) work on the principle of different conductivity (conductivity) of air and water. Due to dissolved mineral and organic substances, water becomes conductive to a certain extent. In normal conditions (rainwater) it has a conductivity of 5 mS/m towards higher values. From this value, the sensitivity of the inundation sensor itself (level sensor) is set with a margin (less than 1 mS/m). When the electrodes are connected by a conductive medium, a current (on the order of µA) passes through the circuit, which is detected by the evaluation electronics, thereby signaling the status with a red LED, activating the output transistor (open collector) or switching on and off the relay contacts.

Flood sensors (level sensors) are designed to signal fault conditions related to water leakage in industrial operations, but also in rooms, offices, or in production halls in the range from 0 to 80 °C. Inundation sensors (level sensors) comply with the degree of protection IP 65 according to ČSN EN 60 529, as amended, and meet the conditions for operation in a normal, chemically non-aggressive environment, the method of use must be chosen taking into account the temperature resistance of the head and the chemical resistance of the housing and the sensor head .