In our semiconductor production facility we also produce the 4-electrode conductivity sensor for EC.

Besides these we produce the advanced miniature piezo resistive pressure sensor. This sensor is created using Sentron’s proprietary full Wheatstone bridge for differential pressure measurements. Thanks to this differential pressure measurement atmospheric changes have no effect. The sensor is stable with low drift in varying pressure and temperature environments. See the page sensor integration services for more information.

Yes! We are not just the founders, but also the manufacturers of our MEMS and ISFET sensors. With years of experience in developing chip technologies, we have the knowledge and expertise to seamlessly integrate our sensors into innovative products that meet your needs.

The differential pressure sensor with full Wheatstone bridge, the ISFET sensor and the EC sensor are all very small. The largest is 3 mm in length, but most are much smaller than that. They are used for example in medical catheters for cardiology or urology where size does matter.

No, we recently released the multiparameter sensor part with the ISFET pH and temperature sensors, as well as the EC sensor for electrical conductivity. With this combination the probes can also be used for ORP. It is to measure the oxidative reduction potential. All these parameters are read out by the same Sentron app.

Glass pH probes measure the hydrogen ion concentration in a solution, while ISFET pH probes measure the hydrogen ion activity. The difference lies in the fact that the hydrogen ion activity takes into account not just the concentration of the ions but also their interaction with other ions in the solution. This is why ISFET pH probes are often considered more accurate than glass pH probes, especially in complex solutions where there may be a lot of competing ions. Additionally, ISFET pH probes are not affected by changes in temperature, as glass pH probes can be.

Thanks to the technology the ISFET pH sensors are robust and can be stored dry. This has a great benefit for applications like water quality measurements in stream beds and tidal areas, where the water level changes in time and the probe will occasionally be above the water level.

Another advantage of is the response rate of ISFET pH sensors. It is faster than glass bulb pH sensors, thus providing faster measurements and enabling better process control.

Moreover, the glass-free approach makes the pH also available for inline food processes and medical applications like gastro-enterology, for which any glass splinter could be fatal.

The ISFET pH sensor is sensitive to direct sunlight, so the best applications for the ISFET pH sensor are in the soil, in water tubing systems, in food, in medical applications like the gastro-intestinal tract, etc.

The wireless product line has connection with the mobile device via Bluetooth. No cable is used. No limitation of just 1 probe per meter. No  maximum of 1.5 meters distance anymore. In other words, the wireless probe enables more flexibility and use cases than the wired probes.  

The Sentron app is free and can be installed at any mobile device (Bluetooth 5.0), including your own. Multiple probes can be connected at the same mobile device and read out simultaneously. Moreover the smartphone features are used for the datalogging, like GPS location, and export functions are simple, like social media, cloud use, etc.

Where conventional pH meters are hard to understand, the Sentron app is very intuitive. It guides you through all required steps like the calibration. With animations it shows you exactly what to do at which points. Please judge yourself: it is available for iOS and Android in the AppStore and PlayStore!

You can purchase the probes at our web shop. Per product a description is provided, as well as suggestions for products to add to your cart.

Yes, the pH probes do make use of the automatic temperature compensation during the calibration procedure. ATC improves accuracy and keeps the electrode in calibration regardless of the temperature.

During pH calibration and EC calibration, ATC reads the true temperature of the buffer and assigns the exact correct value. During sample or interval measurements, ATC reads the true temperature of the sample and adjusts the slope to remain in collaboration.

Let’s get connected and see whether we have a match. Please refer to info@sentron.nl and we’ll contact you as soon as possible.

Besides the standard product-line, we also provide contract development and contract manufacturing of sensor assemblies. More information on our OEM services can be found at Sensor Integration Services.

We would love to hear more about your product development. Together we will discuss whether our sensor integration service would be suitable for your product. Please refer to info@sentron.nl and we’ll contact you as soon as possible.

While the SI400 and SI600 pH meters themselves are out of stock, the wired probes for these meters can still be purchased at our webshop. However, we strongly suggest to take a look at the new, wireless, product line as it has several benefits and great features compared to the cabled pH product line.

At our support page you might find your answer to more specific probe related questions. If not, please do not hesitate to refer to info@sentron.nl for personal contact.