They have revolutionized operation and maintenance in the world of liquid analysis. To celebrate this anniversary, Endress+Hauser is publishing a list of the most common applications for these products.
The Memosens/Liquiline story began in 1999, with the idea of revolutionizing traditional connection and transmission techniques in the field of water analysis. After five years of research and development, sensors featuring Memosens technology were launched on the market, followed a year later by Liquiline transmitters, which now make it possible to benefit from all the advantages of Memosens.
As part of the anniversary celebrations, Endress+Hauser is publishing, among other things, a list of the most common applications for Memosens technology and the three best-selling Liquiline transmitters of the last ten years.
The revolution in liquid analysis
The market launch of Memosens technology by Endress+Hauser in the spring of 2004 marked the beginning of a success story. Since then, the technology has become an industry standard. Memosens stands for the digitization of measured values directly in the sensor head, contactless digital transmission of signals and storage of all sensor-related data directly in the sensor.
In the beginning, there was paper
Around 1920, pH electrodes, which at the time were generally produced in the glassworks of chemical plants, began to compete with pH indicator paper. In order to obtain a reliable measurement result, a reference electrode and a pH electrode had to be connected, and the temperature of the medium had to be known. In the 1960s, single-rod measuring chains (combined electrodes) were introduced. In these chains, the reference system and the pH electrode were linked in a single sensor - a major step forward in process efficiency. In the early 1980s, sensors with integrated temperature began to become popular. Further developments focused on connection quality and moisture protection.
Memosens pursued a different strategy, namely to solve the problem of high-impedance data transmission once and for all, and to miniaturize memory chips so that they could be placed in the plug and connector of an electrode cable.
In 2004, the time was right. After several years of research, the first sensor was presented at the Interkama trade fair. These new sensors were the first to facilitate the storage of important data directly in the sensor. But they also offered other advantages: their connection was totally waterproof, and bidirectional data transmission between sensor and transmitter was contactless, using inductive technology. This prevented the interruption of measurement signals and ensured extremely simple sensor operation.
In 2005, the point of measurement was able, for the first time, to display all the advantages of Memosens technology, thanks to the introduction of the new Liquiline transmitter. The new Liquiline M CM42 two-wire transmitter for measuring pH, conductivity and dissolved oxygen offers unprecedented ease of use. Its interactive menu allows step-by-step configuration. This virtually eliminates operator error.
Outstanding technology
More precise measurements and improved traceability add significant value to many applications.
- No more incorrect measurement values thanks to contactless digital transmission of values
- Plug-and-play thanks to automatic sensor recognition
- User-friendly operation and maintenance thanks to laboratory calibration
- Reduced operating costs due to minimal process downtime and extended sensor lifetimes
- Optimized maintenance strategies by storing sensor and process-specific data directly in the sensor head
It takes several suppliers to establish a standard
Exceptional as it may be, a technology can only establish itself as a standard if it is marketed by several suppliers. With Memosens, the situation is different. To begin with, Knick and Endress+Hauser have merged, and this technology has also been made available to other manufacturers in order to establish an open standard on a broader level thanks to Memosens. The major market players Endress+Hauser, Knick, Hamilton and SI Analytics are now working together to jointly establish the new standard in analytical instrumentation.
Current flagship products
Since 2005, Memosens and Liquiline have continued to evolve. Today, Memosens includes sensors with inductive plug-in heads and fixed-cable sensors using the Memosens protocol for all parameters relevant to liquid analysis.
The Liquiline range now includes transmitters for all sectors, whether a single-channel device for simple applications, a two-wire device for hygienic or hazardous areas, or a multi-channel, multi-parameter device.
Launched in mid-2013, the Liquiline CM44R is one of the latest products to feature Memosens technology. It offers all the performance of a field instrument in a compact package. Samplers and analyzers also share the same operating concept, and can be equipped with Memosens sensors. For example, the Liquiline System CA80 ammonium analyzer, available since April 2014, combines low-maintenance chemical liquid analysis with Memosens sensor measurement for the first time. Similarly, the Liquiline To Go handheld multiparameter meter has been providing accurate process information anywhere, anytime since June 2015.
A long way to go
For a new technology to be adopted in the field of analytical instrumentation, it must cover the main parameters used in the industry.
The foundations have been laid, and the range continues to expand. The Liquiline Memosens platform is set to lighten the workload of a growing number of users in the field of liquid analysis, and improve the safety of their processes.
More information on the most common applications for Memosens technology
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