pHantastic pH Innovation Tophit IsFET pH Sensors Go Digital

Endress+Hauser Ltd

And where glass electrodes cannot be used due to risk of breakage and potential contamination, Endress+Hauser's glass-free Tophit IsFET sensors provide the perfect pH measurement solution.

The Tophit range is ideal for hygienic applications as the non-glass sensor is resistant to breakages, unlike its glass counterparts. In addition, as there is no liquid fill fluid in Tophit sensors, they can even be installed overhead in certain applications, making them the ideal choice where space is at a premium.

Digital pH Sensors

Characterised by their extremely stable PEEK shaft and suitability for media with high organic solvent parts, Tophit IsFET sensors are low maintenance and high performance and conform to both FDA and EHEDG standards, offering the optimum hygienic pH measurement. Fully autoclavable, they have a rapid response time at temperatures from as low as -15ºC up to 135°C coupled with a high sensor stability - extending calibration intervals and saving you time and money!

Tophit goes digital!

Endress+Hause's Memosens digital pH sensor is now available with PTFE, ceramic or open diaphragms, and has ATEX approval for use in hazardous area applications. And now this revolutionary Memosens technology is compatible with Tophit ISFET sensors, allowing you to experience all the benefits of digital technology for your hygienic applications.

Memosens features an inductive, two-way data transfer between sensor and transmitter guaranteeing interference-free measuring signals and simplifying process measuring technology by eliminating moisture ingress problems. And, in conjunction with the new Liquiline M analytical transmitter, which features a large plain text display and predictive maintenance functions, it offers a winning combination for accurate and reliable pH measurement.

The Endress+Hauser Group

Endress+Hauser is a global leader in the provision of measurement instrumentation, services and solutions for industrial process engineering. In 2005 the group employed 6,719 people, generating 885.5 million euros in turnover and a profit of 69.8 million euros. The family business comprises 76 companies in 37 countries, managed and coordinated by a holding company in Reinach, Switzerland. Competent employees and partners guarantee sales and quality service worldwide.


With a wide range of sensors, instruments, systems and services, Endress+Hauser covers the areas of level, flow, pressure and temperature measurement as well as liquid analysis and data acquisition. We connect field devices to process control systems and support our customers with automation and logistics solutions. Our products set standards in quality and technology. In 2005, Endress+Hauser spent 8.4 percent of its net sales on research and development, and lodged patent applications for 173 developments.


Customers are primarily from the chemical, petrochemical, pharmaceutical, food, water & wastewater, paper, energy and oil & gas sectors. With support from Endress+Hauser, they optimize their process engineering procedures while taking into consideration environmental protection, safety and economic efficiency.


Endress+Hauser was founded in 1953 by Georg H. Endress and Ludwig Hauser. The Endress family has been the sole owner of the company since 1975. In 1995, Klaus Endress took over the management of the group from his father. For more than 50 years, the company has developed consistently from being a specialist in level measurement to a provider of complete solutions for industrial measuring technology and automation, while continually breaking into new markets

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