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Cavity pressure sensors from Meusburger

Cavity pressure sensors from Meusburger

Articles

The cavity pressure is an important parameter in process monitoring during plastic injection moulding. Pressure sensors are therefore indispensable for comprehensive mould monitoring. The use of high-quality piezoelectric sensors leads to optimal process quality and increases part quality sustainably. Two different technologies are available on the market for charge transfer: single wire and coaxial cables. The essential differences and characteristics of these two variants may be seen below.

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The different connection options for direct and indirect cavity pressure sensors are shown in the following figures.

 

Single wire
The single wire cable has a very small diameter. This means it can be routed flexibly with minimal bending radii in cable slots and holes and shortened as required. These cables are therefore ideally suited for moulds with limited space. In single wire technology, the mould provides shielding from the surrounding environment such as other voltage sources.

Coaxial
The coaxial cable is characterised by optimal shielding against external signals thanks to its steel sheath. The use of cavity pressure sensors with a coaxial cable is therefore ideally suited for moulds with a high number of electrical components, such as hot runner components or monitoring equipment. This variant is also used if the cable is routed outside of the mould. With the mini coaxial version, several sensor signals can be combined on one multi-channel connector.

Screenshot 1

Comparison of the two versions available at Meusburger for multi-channel connectors

 

Multi-channel connector
With the E 6763 multi-channel connector, the signals from 4 to 8 cavity pressure sensors can be combined with minimum cabling effort. Depending on the version, the multi-channel connectors have insulation displacement contacts for the single wire cable (version S) and mini coax female connectors for the mini coaxial cable (version C). The mould recognition is done by a chip integrated on the circuit board and enables high process reliability during mould changes. In addition, the sensor data can be easily identified with the supplied labelling plate.

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Mini coaxial and single wire cable with multi-channel connector

 

Available from stock at Meusburger
In addition to the existing range of cavity pressure sensors, Meusburger now offers the single wire and mini coaxial cables as well as the matching multi-channel connectors from stock.

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