Type 8110

9 | 11

Visit product website 

6.

Product installation

6.1. Installation notes

Note:

• Inflowing material:

If the Type 8110 vibrating level switch is mounted in the filling stream, unwanted switching signals can be generated. Mount the switch at

a location in the vessel where no disturbing influence from e.g. filling openings, agitators, etc, can occur.

• Flow:

If there is movement within the product, the tuning fork of the switch should be mounted in such a way that the surfaces of the fork are

parallel to the product movement.

The Type 8110 vibrating level switch can be installed in any position. The instrument only has to be mounted in such a way that the tuning

fork is at the height of the desired switching point.

The switching point refers to the medium water (1 g/cm³/0.036 lbs/ in³). Please keep in mind that the switching point of the instrument shifts

when the medium has a different density than water.

Vertical installation

Horizontal installation

Switching point

with lower density

Switching point

with higher density

Switching point

approx. 11 mm

Switching point

approx. 34 mm

Switching point

Switching point

Marking with

screwed version on top

Recommended mounting position, particularly for

adhesive products

7.

Product operation

7.1. Measuring principle

The tuning fork is piezoelectrically energised and vibrates at a mechanical resonance frequency of approx. 1100 Hz. When the tuning fork is

submerged in the product, the frequency changes. This change is detected by the integrated oscillator and converted into a switching

command.

The integrated fault monitor detects the following faults:

• Interruption of the connection cable to the piezoelectric elements

• Extreme material wear on the tuning fork

• Breakage of the tuning fork

• Absence of vibration.

If one of these faults is detected or in case the power supply fails, the electronic system switches to a defined switching state, e.g. the relay

de-energises (safe state).