Sensor integration service

Do you want to obtain sensor data anytime anywhere?

Do you need engineering help to integrate a sensor into your product?

We can support you through contract development and contract manufacturing of sensor assemblies that fit your needs.

Get more insight into our pressure sensor and pH ISFET sensor. Our sensor assemblies are used successfully in the market of FDA approved and CE certificated medical devices.

More info
Leaflet OEM

Sensor Integration Services

Do you want to obtain sensor data anytime anywhere?

Do you need engineering help to integrate a sensor into your product?

We can support you by contract development and contract manufacturing of sensor assemblies that fit your needs.

Get more insight below on our accurate, differential pressure sensor already used for FDA approved and CE certified products. Or get introduced to the best pH ISFET sensor in the world, that is used for medical as well as analytical, environmental and food applications.

More info

Vertically Integrated Capabilities

At our inhouse semi-conductor production facility, we have many years of experience in developing and producing high quality miniature sensors. We perform the lithography and chemical vapor deposition ourselves, as well as the diffusion and annealing furnaces. After testing the wafers, they are diced and picked by well-trained special operators.

Our portfolio contains various dimensions of ISFET pH sensors and Wheatstone full bridge pressure sensors. And more sensors will follow.

Sentron is your partner for the full process: starting with semiconductor processing to documentation required for the MDR. Anything is possible, depending on the preferences of the customer.
At the start of the partnership, we will discuss which processes the customer would like Sentron to do. This can vary between the bare sensor die to a full sensor product with GUI.
During the prototyping phase the sensor module design can be changed and concepts can be tested. After the engineering project has been finalized, Sentron offers standardized volume assembly of the sensor. The sensor component is subsequently assembled into the end product by the customers.

Sentron has specific know-how in die attaching, wire-bonding, encapsulating, steering and compensating the sensor. We can provide successful R&D engineering services for any sensor integration into your product. This contract development and manufacturing of sensor assemblies is feasible for any shape or dimension and for any kind of product and application.
Processes required for the pH prototypes include the placement of our pH ISFET sensor on the PCB after which it will be wire-bonded, glob-topped and encapsulated. The reference electrode has to be designed such that it fits into the assembly. A diaphragm is placed in the reference chamber wall and the chamber will be gel filled. For the pressure sensor prototypes the outline is similar. However, this sensor does not require a reference electrode.
The design of the electronics that is required for the steering of the sensor is included, as well as the custom-made housing for the assembly. Finally, a cable is attached, if required.

We have all the necessary equipment in place at our Leek facility, including a semi-conductor production and testing factory, a fully equipped tooling shop (including a 5-axel CNC milling machine), an electronic and PCB circuit design facility, a software development unit and a fully equipped sensor and product assembly facility.
We have a clean room facility for development, manufacturing, product testing, and qualification services of sensors, assemblies and meters. These are necessary for the determination of physical and chemical values measured in the engineering field.

We are ISO 13485:2016 certified and have the required REACH and RoHS compliance declarations. See Contact

Contract Development and Manufacturing

Sentron has broad experience in and has the in-house capabilities for performing contract development based on sensor solutions. Typically, these projects start in the project idea & concept phase. The engineering team assists in the design and integration of the pH ISFET or Wheatstone full bridge pressure sensor in the product of the customer.
Based on the requirements, the application and the annual forecast we will propose the most suitable sensor assembly that fits the customer needs the best. When we do not have a suitable sensor in our portfolio, we will propose a 3rd party supplier sensor. Alternatively, we will develop the sensor ourselves. The sensor will have a seamless connection to your product or production process, including mounting the hardware, cabling, connectors and housing.

After the prototypes have been built and tested, your test results will be evaluated. The conclusions of the verification and validation process are incorporated. Next, the phase of transfer to manufacturing will be started.

Depending on the outcome of the design verification and validation, the product specification is set and preparations are made for high volume production. Work instructions are finalized and test equipment will be designed and manufactured. If necessary, special tools will be manufactured for the production of the sensor assembly.

When the preparation for production of the sensor is finished, the production of high volumes is no problem at our facility. We will discuss the best delivery schedules and make sure you will receive your high quality sensors in time.

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R&D evaluation pH kit

We understand that you may want to test and evaluate our sensors before contracting us as your partner. The R&D evaluation pH kit is specifically designed for these situations. It is a modular and flexible ISFET pH sensor platform for research and development purposes. It can be integrated into prototypes and experimental setups.

It’s all about sensors

Besides the wireless and durable pH probe product line, you can also reach out to us for any customized sensor integration into your own product.

The non-glass ISFET (Ion Sensitive Field Effect Transistor) pH sensor is one of the sensors that we produce in our semiconductor production facility. It is robust and does not require wet storage . This makes it well suited for, e.g., agriculture, water environment, food and other industrial applications. Our ISFET assemblies are used successfully in the market of FDA approved and CE certificated medical devices for the medical application in gastro-enterology.

In our facility we also produce the advanced miniature piezo resistive sensor that is equipped with a full Wheatstone bridge for differential pressure measurements: thus, no influence due to atmospheric changes. The narrow dimensions of this pressure sensor make it ideally suited for medical applications. Our pressure sensor assemblies are already on the market in medical devices for cardiology, as well as for neurology and urology catheters.

What's Next

By taking a serious look at all applications, we keep entering into new innovations in our semiconductor production facility. Soon we will launch sensors for EC and ORP, with which great multisensor solutions for e.g. water monitoring can be provided. Additionally, we’re looking forward to end the R&D on ion-selective sensors.

Soon we will launch sensors for EC and ORP. Imagine, all parameters to be monitored using one single device! 

Measuring pH, electrical conductivity (EC) , and oxidation-reduction potential (ORP) together can provide valuable information in a variety of applications. Here are a few examples:
• Water treatment: In water treatment, measuring pH, electrical conductivity, and ORP can help determine the effectiveness of water treatment processes and ensure that the water is safe for consumption.
• Chemical manufacturing: In chemical manufacturing, measuring pH, electrical conductivity, and ORP can help monitor the quality of products and optimize production processes.
• Environmental monitoring: In environmental monitoring, measuring pH, electrical conductivity, and ORP can help identify pollution and monitor the health of aquatic ecosystems.
• Aquaculture: In aquaculture, measuring pH, electrical conductivity, and ORP can help maintain proper conditions for fish and other aquatic organisms.
• Food and beverage production: In food and beverage production, measuring pH, electrical conductivity, and ORP can help ensure the quality and safety of products.

The EC and ORP will become available as extra parameters in the ISFET pH probe product line. This means that all three parameters can be measured with high precision and accuracy in one single device. This would make it a versatile and convenient tool for various applications, reducing the need for multiple probes and devices.
Additionally, the Sentron app provides user-friendly software and data management features that make it easy for users to record, analyze, and share their data.
The probes are reliable and durable as they can be easily renewed with just the replaceable sensor part. This is particularly beneficial for users who require frequent use and rigorous testing conditions.

The EC is the measure of a material’s ability to allow the transport of an electric charge. This knowledge is important for water-quality monitoring in public water supplies, in hospitals, in boiler water and in industries which depend on water quality such as horticulture and breweries.

As we will produce the EC sensor in our own foundry, we will combine the EC sensor with the ISFET pH sensor into one single device. There are many applications where it would be beneficial to measure both pH and electrical conductivity. Some examples include:

  • Agriculture: In agriculture, measuring the pH and electrical conductivity of soil can help farmers determine the appropriate amount of fertilizer to apply to their crops.
  • Aquaculture: In aquaculture, measuring the pH and electrical conductivity of water can help maintain proper conditions for fish and other aquatic organisms.
  • Industrial processes: In various industrial processes, measuring the pH and electrical conductivity of liquids can help monitor the quality of products and ensure consistent production.
  • Environmental monitoring: In environmental monitoring, measuring the pH and electrical conductivity of water can help identify pollution and monitor the health of aquatic ecosystems.

Low conductivities are expected for pure water applications like aquaria, household, drinking water and rivers. On the other side, high conductivities are expected for industries like irrigation and greenhouses.

The ORP is the measure of the tendency of aqueous solutions, or any other chemical species, to either acquire electrons from an electrode and be reduced thereby, or to lose electrons to an electrode and be oxidized thereby. This knowledge is important for water-quality monitoring in aquaria, swimming pools, as well as environmental and wastewater sampling. E.g. ORP is an indicator of micro-organism inactivation in a swimming pool or spa pool.

As we will produce the sensors in our own foundry, we will combine the ORP parameter with the ISFET pH sensor into one single device. Measuring pH and oxidation-reduction potential (ORP) together can provide valuable information in a variety of applications. Here are a few examples:

  • Water treatment: In water treatment, measuring pH and ORP can help determine the effectiveness of water treatment processes and ensure that the water is safe for consumption.
  • Chemical manufacturing: In chemical manufacturing, measuring pH and ORP can help monitor the quality of products and optimize production processes.
  • Environmental monitoring: In environmental monitoring, measuring pH and ORP can help identify pollution and monitor the health of aquatic ecosystems.
  • Food and beverage production: In food and beverage production, measuring pH and ORP can help ensure the quality and safety of products.

High ORP values (positive potentials) are expected for aerated surface water, rivers, lakes, oceans and rainwater. Low ORP values (negative potentials) are expected in places with limitations in air supply such as submerged soils, swamps and marine sediments.

We started innovative developments on ion-selective sensors that have a membrane mixture suitable for detection of different ions based on the ISFET technology. Selectivity is based on proprietary modifications with several polymer matrix configurations. Nitrate (NO3–), Ammonium (NH4+) and Potassium (K+) are currently in development.

Innovation thanks to
European Union

The European Regional Development Fund, as part of the Union’s response to the COVID-19 pandemic, has enabled us to work on a sensor to measure pH in extreme environments and a reference that is resistant to high temperatures and contamination.

The aim of the first project is to develop a new construction of the pH-sensitive field effect transistor (ISFET). A new top layer should improve the stability of the ISFET and make it more resistant to extreme pH values. Another improvement is that the sensor should be able to better withstand higher temperatures.

The intended result is a functionally working prototype pH sensor that is more stable with regard to drift and that can measure the pH for a long time in solutions and environments with higher temperatures and extreme pH values.

The aim of the 2nd project is to develop a prototype solid-state reference system, which eliminates the need for liquid in the reference electrode.

Within this project, we will develop a solution that is revolutionary in the market. A solid-state reference has no liquid internally and is coated on the outside with a precious metal, so that it is not subject to aging. This reference will also be resistant to higher temperatures and contamination.