Success for your critical injection moulding applications.

Zero defect in production to increase your profit!

What does Cavity Eye offer?

CAVITY EYE system consists on the one hand out of pressure sensors installed in the injection molding tool. The second part of the system includes hardware and software that evaluates information from the injection molding machine and the internal pressure curves of each cavity in the tool. Thus, a reliable quality statement for each produced part is possible.

In the conventional injection molding process, the flow of information ends at the end of the machine nozzle – what happens in the mould remains invisible to the user.

CAVITY EYE enables the visualization and evaluation of the internal pressure curves, a systematic process control for each individual cavity in your production. Our system looks directly into every cavity – this is CAVITY EYE.


The injection molding process is a complex process of interaction of many individual parameters, the mould, the raw material batches used and, of course, depending on the machine operator in adjusting settings during production.

The focus is ultimately on increasing product quality and improving profitability with the goal of zero defects to your customer.

Our CAVITY EYE process monitoring system observes and evaluates the quality of an injection molded part based on the internal pressure curve of each cavity. Evaluation elements and tolerance curves can be set or adjusted manually or automatically. These limits are defined as part of a DoE (Design of Experience) during the running-in process of the tool. Thus, an individual quality prediction for each individual produced part is possible, which the system evaluates as good or bad part and gives a corresponding selection signal to the periphery.

Your advantages when using CAVITY EYE with the aim of zero-defect production

  • Reduction of quality costs
  • Increase process efficiency and process reliability
  • Saving of sorting costs
  • Reduction of customer complaints
  • Upgrade of already existing moulds with few efforts
  • Increase plant efficiency and short payback period (ROI)
Download Cavity Eye Broschures
Cavity Eye K Brochures
SMP8 brochure (English)
SMC brochure (English)
Cavity Eye foldout (English)

Mould Equipment


Best solution for mould instrumentation

Sensor Fixing Plates

Pressure Sensors (PC15,PC26)

1 kN, up to 40 kN

Mould Plug with Memory

Pressure sensors

CAVITY EYE pressure sensors are waterproof (IP67) and shock resistant. CAVITY EYE sensors provide a wide pressure range from 1 to 40 kN, which is suitable for any application. The sensor geometry diameters are 15 or 26 mm, correspondingly.

CAVITY EYE uses only indirect sensors. According to investigations, the indirect measurement is as accurate as a direct measurement. A major advantage is that the sensors are usually mounted only once and do not need to be maintained or disassembled over the entire lifetime of the tool. Thus, the risk of damage to the wiring is excluded. Sensors and cables are reliably protected by pressure plates or stainless steel covers.

For the majority of the tools, the sensors are mounted in the clamping plate on ejector side. Pressure is transferred from the (existing) ejector pin via an additional transfer pin to the top of the sensor (measuring surface). Alternatively, we have also developed solutions for a measurement directly under a measuring pin.

Memory in mould (MiM)

In the Memory in Mould Plug (MiM), the wiring of the pressure sensors is carried out.  The MiM is firmly connected to the tool. In each case 8 – or in a larger design – 32 sensors can be read out. If more sensors are required, several plugs can be used. Due to the built-in memory module, all important information about the tool is stored in the MiM (reference curves, tolerances, switching point, sensor identifiers, pin diameter, cavity identification, machine parameters). Thus, these data can be accessed immediately when changing the injection moulding machine and parameter adjustment can be done to the already made digital fingerprint (cavity pressure curve) of the respective injection molded part.

We gladly assist you in selecting the sensors and the right position. More information under TECHNICAL DETAILS


Sensor Type Max. Load [N] Max. Mould Temperature [°C] Diameter [mm] Height [mm] Max. Ejector Diameter / Area [mm] / [mm2]
PC15-1-AA 1.000 90 15 8 3 / 7
PC15-1-AA-MT 1.000 150 15 8 3 / 7
PC15-1-AA-HT 1.000 200 15 8 3 / 7
PC15-5-AA 5.000 90 15 8 6 / 28
PC15-5-AA-MT 5.000 150 15 8 6 / 28
PC15-5-AA-HT 5.000 200 15 8 6 / 28
PC26-20-AA 20.000 90 26 12 12 / 113
PC26-20-AA-MT 20.000 150 26 12 12 / 113
PC26-20-AA-HT 20.000 200 26 12 12 / 113
PC26-40-AA 40.000 90 26 12 20 / 314
PC26-40-AA-MT 40.000 150 26 12 20 / 314
PC26-40-AA-HT 40.000 200 26 12 20 / 314
Product Data Sheets
PC15 and PC26 Pressure sensors
MPM (Mould Plug with Memory)
2D Technical Drawings of parts
Metric Imperial
PC15 Pressure Sensor
PC26 Pressure Sensor
RC15 Pressure Sensor
RC26 Pressure Sensor
Sensor Front Plate 15
Sensor Back Plate 15
Sensor Front Plate 26
Sensor Back Plate 26
MPM8 (Mould Plug with Memory 8) with Standard Spacer
MPM8 (Mould Plug with Memory 8) with Offset Spacer
MPM32 (Mould Plug with Memory 32) with Standard Spacer
3D (.step) files of standard parts
PC15 Pressure Sensor
PC26 Pressure Sensor
RC15 Pressure Sensor
RC26 Pressure Sensor
Sensor Front Plate 15
Sensor Back Plate 15
Sensor Front Plate 26
Sensor Back Plate 26
MPM8 (Mould Plug with Memory 8) with Standard Spacer
MPM8 (Mould Plug with Memory 8) with Offset Spacer
MPM32 (Mould Plug with Memory 32) with Standard Spacer
Sample drawings and pictures for PC15 and PC26 sensor installation
Metric Imperial
PC15 Sensor installation in clamping plate (rear)
PC15 Sensor installation in clamping plate (front)
PC26 Sensor installation in clamping plate (rear)
PC26 Sensor installation in clamping plate (front)
PC15 Sensor pocket layout (front)
PC15 Sensor pocket layout (rear)
PC15 Sensor installation in Cavity and Clamping plate (rear)
Sample sensor installation layout (front)
Sample sensor installation layout (rear)
Sample 3D pictures about installation
Sample drawings for RC15 sensor installation
Metric Imperial
RC15 Sensor installation in clamping plate (front)
RC15 Sensor installation in clamping plate (rear)
RC15 Sensor pocket layout (front)
RC15 Sensor pocket layout (rear)

Measuring Equipment

The system for cavity pressure measurement, controlling the machine and the accessories.

Smart Measuring Plug (SMP)

Smart Control Plug (SCP)

Smart Control Socket (SCS)

Cavity Eye Base Unit

Cavity Eye measuring system for zero-defect production

The latest generation CAVITY EYE SMP Smart Measuring Plug is a robust, industrial-grade, IP 67 plug connected directly to the Smart Control Socket SCS and sends data to an integrated ARM-based measurement system. It therefore offers an industrial method for measuring the cavity pressure of single and multi-cavity moulds even under tough production conditions. The CAVITY EYE system unit is installed in the machine control cabinet of the injection molding machine. The Smart Control Plug provides the interface for signal transmission from and to the injection molding machine or to connected peripherals. Usually, no EUROMAP interface is required for selection of good and bad parts.

The software offers the possibility to set an automatic adjustable tolerances over time and pressure axis, alternatively individual monitoring strategies can be defined.

The CAVITY EYE system is ideally suited for balancing of multi-cavity moulds, fast start-up of production, detection of material variations and even easy mould transfers.

Smart Measuring Plug
Plug type and size Harting HAN 16A Harting HAN 16B
Dimensions LxWxH 110x36x70 142x43x80
Number of channels 8 32
Resolution 32 bit 32 bit
Sampling rate 200…2000 Hz 200…2000 Hz
Operation temperature 10…85 °C 10…85 °C
Power supply 6…9 V (7,5 V standard) 6…9 V (7,5 V standard)
Measuring cable length 5…15 m 5…15 m
Control software Cavity Eye Base 25.x Cavity Eye Base 25.x
Product Data Sheets
Smart Measuring Plug
Smart Control Plug
Smart Control Socket
2D Technical drawings of Measuring Equipments
Metric Imperial
3D (.step) files of Measuring Equipments



Zero defect production, simply – with Cavity Eye

Industry 4.0 Connection of external devices in real time

We create individual software solutions for the combination of machine data, cavity pressure curves and communication with external devices or signals.

Transparency and efficiency in your production – data integration into your system. Available online at any time.


The Smart Moulding Control is an online and real-time injection moulding quality and process control system, including:

  • (SMP) Smart Measuring Plug;
  • (MSC) Monitor, Switch, Computer;
  • (SCP) Smart Control Plug

The Smart Measuring Plug provides the measurement and based on the pressure curve, the control signal is sent to the SCP which communicates with the injection moulding machine and controls the selector, the robot the transfer (switch over) or stops the machine by 24 V digital signals. One, two or more SMP plug can be connected to the router so the maximum number of the sensors are unlimited. The system is fixed to the injection moulding machine.


Your success with our support

Consulting, Implementation – Training – Solutions

Consulting and implementation

CAVITY EYE employees are injection molders. Regardless of whether it is an existing or a new project, we advise on application technology, injection molding tools and the complete process along the entire value-adding chain.

We analyze your injection molding process, discover weaknesses and optimize parameters. We suggest the sensor positions, modify the tool design, the tool itself and create statistical experimental design (DoE) together with your experts. On the basis of the test results, reliable quality forecasts can be made and tolerance limits can be set.

On the one hand, injection molded parts must be completely filled, but on the other hand they must not be overmolded. Viscosity variations of the raw material are mainly responsible for process deviations. We will find the root causes together with you and make visible what is really happening in the tool – all for your success.


First project – let’s start together

3 days service in plant. The preparation of the project is online. We consult about the goal of the project, former production failures and statistics, instrumentation, sensor positions, design, modification and manufacturing

After the online preparation we visit the production plant of the customers and install the sensors together, then test the mould in toolshop. After the mould clamp, we optimize the process by cavity pressure.

A Cavity Eye engineer gives a training of “curve reading” and DOE analysis based on cavity pressure. The software and other applications also the part of the training. After the training, one-two days production will be analyzed. Stability and production restart also based on cavity pressure. During the first project, the Customer gets enough experience to handle the second one on his own.

On-line support

Design and design review

The designers of the Cavity Eye can modify and make review of the 3D designs after signing the NDA. The review is free of charge and takes 1…3 days, the design has service charge.

Remote Control

If the customer has any kind of difficulties of the application of Cavity Eye, after invitation we can connect to the Cavity Eye instrument and give online support (mould analysis, production analysis, statistical analysis, software update etc). Thanks to this online service, you do not have to wait for a service engineer and the problem can be solved in a day.


CAVITY EYE offers education and training to your staff. Only if there is enough process knowledge also directly at the machine, a new system will be accepted and used successfully.

Our training content is not limited to the knowledge about cavity pressure curves. We further offer in-house training courses in the following areas:

-Basics of plastics engineering – injection molding knowledge

-Design for injection-molded parts

-Optimal mould design

-Systematic injection molding, troubleshooting, process optimization

-Injection molding with CAVITY EYE cavity pressure system


CAVITY EYE offers tailor-made solutions. Our cavity pressure system is an essential element in improving your efficiency, making processes visible in detail and increase your profit. Only zero defect production will satisfy your customer. Therefore we offer application technology service also for existing projects, our sensors can even easily be installed in existing moulds with few efforts.

We take care about your injection moulding tool in a complete package. We take over modification of existing tool plates or rebuilding of individual tool components, as well as the installation of our sensor technology and system components into your injection molding machine.

We are more than just a sensor manufacturer – we are CAVITY EYE.



In case of any question do not hesitate to contact us


Attila SZŰCS Email: attila.szucs@cavityeye.com


Éva DOBÓVÁRI Tel: +36-30/703-6058 Email: eva.dobovari@cavityeye.com


András SZŰCS PhD Tel: +36-30/313-8675 Email: andras.szucs@cavityeye.com

Company Data

Business Name: Cavity Eye Hungary Kft. Business Address: Szellő utca 1., Kecskemét, Hungary H-6000 VAT Number: HU-23921292-2-04 Email: info@cavityeye.com Foundation: 2012 Area of business: Cavity pressure measurement solutions for plastic industries, services and training for the plastic industries Target groups: Automotive industries (plastic processing), Plastic product manufacturing companies (precision engineering), Other industries

Cavity Eye