Monitoring devices

Overview of possible monitoring devices for submersible mixers without Ex rating:

Key

− = not possible, o = optional, • = standard

Overview of possible monitoring devices for submersible mixers with Ex rating:

Key

− = not possible, o = optional, • = standard

All the monitoring devices fitted must always be connected!

Monitoring of motor compartment

The motor compartment monitoring protects the motor winding from short-circuits. The moisture is measured by an electrode.

Monitoring the motor compartment and sealing chamber

The motor compartment monitoring protects the motor winding from short-circuits. Sealing chamber control detects fluid ingress through the mechanical seal on the fluid side. In each case, the humidity is recorded by an electrode in the motor compartment and sealing chamber.

NOTICE! The Ex version does not feature this monitoring unit!

Motor winding monitoring

Thermal motor monitoring protects the motor winding from overheating. A temperature limiter with a bimetallic strip is fitted as standard. Once the activation temperature has been reached, deactivation with reactivation lock must take place.

Optionally, the temperature can also be measured using a PTC sensor. Thermal motor monitoring can also be designed as temperature control. This allows two temperatures to be measured. Once the low activation temperature has been reached, an automatic reactivation can be initiated after the motor has cooled down. The unit is forced to deactivate with reactivation lock once the high activation temperature has been reached.

External monitoring of the sealing chamber

The sealing chamber can be equipped with an external pencil electrode. The electrode registers fluid ingress through the mechanical seal on the fluid side. An alarm or deactivation of the pump can therefore take place by pump control.