With the pH sensor Memosens CPS171D, the oxygen sensor Memosens COS81D and the conductivity sensor Memosens CLS82D, sensors are available for the most important, critical measurement parameters that provide precise and stable measured values and meet current hygiene and regulatory requirements. All sensors are based on digital Memosens technology. The measured value is digitized in the sensor and transmitted contactlessly to the transmitter via induction. Moisture and corrosion, which could falsify the measured value or cause the measuring point to fail, have no chance. This results in maximum reliability in data transmission.

Stored data is used for process optimization
The digital sensors with Memosens technology store calibration, sensor and process data. This allows them to be calibrated and regenerated under optimum conditions in the laboratory using the Memobase Plus software. This increases the service life of the sensors and simplifies commissioning and maintenance. Pre-calibrated sensors can be replaced in the field within a very short time thanks to the bayonet lock and automatic sensor recognition. The stored data can be used for predictive maintenance and process optimization.

All sensors are compact and available in a twelve-millimeter design with PG screw connection. They are suitable for laboratory measurements as well as for pilot and production plants. By using the same technology, uniform measurement results are achieved, which enables faster transferability from the laboratory process to the large-scale production plant as well as optimized process control. The sensors can either be used directly in benchtop fermenters, for example, or installed in tanks and pipelines using static or retractable fittings.

The new portfolio supports sterile and hygienic applications.

Oxygen sensor Memosens COS81D
The main applications of oxygen measurement can be divided into two categories: measuring the absence of oxygen for safety reasons and to protect intermediate and end products, and measuring the concentration of oxygen for optimum process monitoring and control. The product quality and yield, for example in cell cultivation and fermentation processes, is largely determined by the oxygen concentration in addition to the pH value. The Memosens COS81D oxygen sensor is based on the optical fluorescence method and delivers precise and stable measured values even under the harshest process conditions up to 140 degrees Celsius.

The suitability for hygienic and pharmaceutical applications of all wetted materials and the sensor design has been proven through extensive testing; all necessary declarations of conformity and certificates are available, such as EHEDG, FDA and USP. Another advantage of the Memosens COS81D is its simple calibration; it can be carried out in the field using the completely oxygen-free, ready-to-use zero point gel COY8 or in the laboratory under optimum conditions with Memobase Plus. Both increase the accuracy and reliability of the entire measuring point and enable optimum sensor management.

Conductivity sensor Memosens CLS82D
Electrical conductivity is the most frequently used parameter in the production of food and pharmaceuticals. It must be measured over a wide range, from the lowest values when monitoring water quality or rinsing processes with ultrapure water to medium to high values for concentration measurements and phase separations in the process. The new Memosens CLS82D four-electrode conductivity sensor is suitable for this. Sensors with four electrodes compensate for polarization effects that occur at high conductivity values and lead to falsified measurement results. The compensation ensures consistently reliable values over the entire measuring range.

The special feature of the Memosens sensor is its ceramic sensor element with platinum electrodes. The advantage of this combination of materials is that ceramic and platinum behave very similarly when the temperature changes and therefore expand and contract evenly. This means that there are never any gaps - germs or water cannot penetrate. The sensor design guarantees good cleanability and even aseptic hygiene, according to the manufacturer. pb