Rotary paddle level switch PLS

for liquidsATEXthreaded

The paddle switch may be used as either a high or low level limit switch. It is easily mounted from above, or through a vessel wall. A small electric motor drives a paddle which rotates freely in the absence of material. When the paddle is impeded by the presence of material, a microswitch actuates an alarm signal. As soon as the paddle is completely stopped from rotating, power to the motor is cut, thereby extending motor life. After the material level falls, the motor is returned to its normal position and the paddle begins to rotate again. Failsafe models use a microcontroller for self-validating diagnostics and monitor both motor and shaft rotation to detect and indicate a fault condition on the fault relay. The PLS Series of switches can be used with granular, pelletized, and powdered dry products. They may be used in high level applications with materials over 160 kg/m3 and low or intermediate applications with materials over 80 kg/m3. Key Features Failsafe option High temperature option 1½” BSP or 1¼” NPT threaded connection Side or top mounting Shaft or cable extensions Robust aluminium housing IP66 ingress protection AC or DC supply voltages Dust explosion protection FEATURES & BENEFITS Variety of paddle types available as accessories for light, medium, and heavy materials For grains, pellets, and dry powder products. Hazardous area approved model available Failsafe model available with status LED