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Endress+Hauser introduces Oxymax W COS21D, the first digital oxygen sensor incorporating Memosens technology. The measured value is digitized directly in the sensor and can then be transmitted as a digital signal without interference to the transmitter for further processing. It is this which distinguishes the design of the COS21D sensor from all other oxygen sensors on the market for use in the pharmaceutical and food industries.
Oxygen is vital to the survival of many organisms. It is required as a source of energy for all key cellular activities. That is why oxygen concentration is one of the most important factors in the monitoring of cell cultures. On the other hand, oxygen is the critical factor in all processes where the presence of organisms is undesired and where it is important that the product is not damaged due to oxidation resulting from the presence of oxygen. Examples here would be olive oil in a tank or boiler feed water in a power plant. Therefore, oxygen measurement in the years to come will be defined by the observation of high levels in the context of cell culture monitoring and of minimum levels in the context of product quality.
The solution from Endress+Hauser is called Oxymax W COS21D, a 12mm oxygen sensor incorporating Memosens technology. The COS21D sensor (D stands for digital) is available in three versions: COS21D-A:
A sensor for monitoring cell cultures, for use up to 20mg/l. This sensor is used primarily in fermentation systems. COS21D-B:
A trace sensor for media containing CO2, particularly in the drinks industry. This sensor is required for beer filling processes and also for all stages of quality assurance for drinks containing CO2. COS21D-C:
A trace sensor for general oxygen measurement applications, from power plants to residual oxygen measurement in tank farms and even inerting measurements in machine storage areas.
Advantages of the new sensor
All basic data such as sensor ID, the serial number of the sensor, calibration values and general administration values are stored digitally in the sensor and are available to the transmitter for processing. When replacing a sensor, the most recent sensor-specific data are loaded into the transmitter, and operation can commence immediately. This means in particular that sensors can be exchanged between measuring points at short notice and without having to repeat calibrations. The COS21D sensor may also be calibrated in a laboratory or workshop and then put into operation at short notice and without further ado at the relevant plant locations. Preventive maintenance is the latest catchword and is something which is enabled by Memosens technology. In addition to standard data such as sensor ID, operational data are recorded and made available for the purpose of asset management. These data include the number of calibrations, number of hours in operation, a wide range of operating conditions recorded as temperature and current, SIP cycles and electrolyte concentration.
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