PT415
FLOW (WATER PRESENCE) CONTROL RELAY
The device is used for detecting the presence of a liquid within a pipe or container, especially for the secondary protection of submersible pumps.
The device is used for detecting the presence of a liquid within a pipe or container, especially for the secondary protection of submersible pumps.
It is connected to spark-plug type electrodes.
It is installed in an electrical panel on a standard relay socket.
The operating principle of the device is based on the measurement of the difference in the resistance between the electrode and the ground. Upon connecting to the power supply, the relay is activated for an adjustable interval (T). After this interval has passed, it checks for the presence of water and maintains the relay activated if water is detected, or releases the relay if no water is detected.
The use of safe, low AC voltage between electrode and ground prevents the phenomenon of electrolysis. The composite resistance of the liquid should be less then 20 kΩ.
- power supply
230V AC / 50Hz
- relay outputs
One changeover contact relay 10Α / 250V AC cat. AC1
- indications
POWER ON and RELAY ON
- connection socket
Bulb type, 8p or 11p
- protection
Varistor (against overvoltage and lightning)
- operation temperature
-20 to +50 C
- adjustments
Time delay: 0,4 - 6 min
- max. electrode voltage
24V AC
- electrode connection cable
1 - 2,5mm² cross-section
- enclosure
Plastic box / 42x89x94mm / IP41