Optimising Injection Moulding with Meusburger's Comprehensive Sensor Range

Mould controls Cavity pressure sensors for better control and efficiency in production

2025-05-29 Source: Meusburger 2 min Reading Time

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Optimising injection moulding starts with precise cavity pressure monitoring. Meusburger’s comprehensive sensor range — featuring both direct and indirect options — provides accurate data for improved process control, higher part quality and efficient production.

Meusburger offers its customers a comprehensive selection of components for cavity pressure measurement.(Source: Meusburger) — Meusburger offers its customers a comprehensive selection of components for cavity pressure measurement.
(Source: Meusburger)

Cavity pressure is a decisive parameter for process monitoring in injection moulding and contributes significantly to process quality optimisation and to a sustainable increase in part quality. Cavity pressure sensors provide important information from each cavity, enabling precise process monitoring. Meusburger offers direct and indirect cavity pressure sensors, mounting accessories and connection components from one source. All components are available from stock and Meusburger enables a simple download of CAD data with the required installation spaces.

Cavity pressure sensors enable direct measurement of the pressure in the cavity and are based on the piezoelectric effect. The sensors are equipped with high-precision quartz crystals, that release a charge under the influence of pressure or force. This charge, amplified by a charge amplifier, provides precise information about the pressure applied to the sensor. Depending on the installation position in the mould, the sensors can monitor strength, viscosity, compression or shrinkage.

Direct and indirect sensors

The cavity pressure sensor, direct E 6740 enables direct measurement of the cavity pressure, as it is inserted directly into the cavity and is in contact with the plastic melt. The cavity pressure sensor, indirect E 6750, on the other hand, measures the cavity pressure via a force sensor outside the cavity.

Versatile cable technology for different requirements

Two different technologies are available for signal transfer: single-wire cables or coaxial cables. The single-wire sensor cable E 6760 is characterised by its flexibility and is used in confined spaces. The coaxial sensor cable E 6756 offers optimum shielding against electrical interference signals thanks to its steel sheathing. Cavity pressure sensors with coaxial cables are therefore ideal for moulds with a high number of electrical components.

Signal transmission options

There are two types of signal transmission to the injection moulding machine: transmission of a single sensor signal or transmission of multiple sensor signals. The single-wire sensor cable with single-channel connector E 6762, for example, enables a quick and easy single connection. For efficient merging of several sensor signals, Meusburger offers the multi-channel connector E 6763, with which up to eight cavity pressure sensors can simply be merged in a space-saving way. The number of cables required is thus greatly reduced.

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