A geared motor mounted in the extension of a shaft and rotatable by a certain angle is held by a spring at a stop. The motor drives the blade protruding into a container via the shafts. As soon as the product reaches the vane, it is prevented from rotating. The reverse torque turns the motor out of its end position and actuates a switch. The motor is switched off by a second switch. If the filling level drops, the leaf is released and the motor is retracted by the spring to its end position. The motor is switched on again and the output signal is switched back.
The geared motor and the two switches are mounted in a plastic housing. The exact running of the blade shaft is ensured by ball bearings. A locking clutch prevents damage to the motor in the event of blockages. An optional special seal on the shaft protects against penetration of dust and moisture into the housing or ball bearing.
Typical applications
For all bulk materials from free-flowing to difficult to flow and for goods that tend to bridge, mat or crust.
robust cast aluminium housing
easy mounting
suitable for MIN and MAX alarms
longer vane shaft optionally available
max. grain size: 150 mm, bulk density: 0,01 bis 2 t/m³
max. pressure: 25 bar, max. temperature: 350 °C
output signal: SPDT relay with very high switch rating (2 A / 250 V)