Burkert 8221 probe for purified water systems

Burkert 8221 probe, C=0.01, clamp-type installation for purified water systems. distributor. The Burkert 8221 probe, also known as a conductivity sensor, is a German Burkert conductivity probe

• in stock. water, seawater, and electrolytes in batteries. Burkert conductivity sensors are used in laboratories, industrial production, and detection fields to measure the conductivity of various solutions such as ultrapure water, pure water, drinking water, and sewage, or the overall ion concentration of water samples. Description of the Burkert 8221 probe: The 8221 type Burkert sanitary conductivity probe can be widely used to determine the conductivity of pure or concentrated liquids. Due to its sanitary and durable design, the conductivity probe is suitable for various applications, including the food and beverage industry, pharmaceuticals, biotechnology, and chemical industries. Conductivity probes are based on two different technologies: • Probes using a dual-electrode structure are suitable for measuring pure liquids, especially ultrapure water, where contamination can affect the measurement. • Probes using a four-electrode structure prevent polarization effects and are insensitive to contamination. A clever design ensures excellent linearity throughout the entire measurement range. All versions integrate a temperature sensor (Pt1000). The probe must be connected to the 8619 multiCELL transmitter/controller. Burkert 8221 Conductivity Sensor Usage Instructions:
• When using the Burkert 8221 conductivity sensor, ensure the object being measured is in full contact with the sensor.
• When connecting the Burkert 8221 conductivity electrodes to the Burkert sensor, align the notch of the BNC connector with the protruding end of the sensor's connector and tighten.
• Before and after using the Burkert conductivity sensor, rinse both electrodes with distilled water and blot dry with filter paper. Burkert conductivity sensors are a crucial field of engineering research, used to measure the conductivity of liquids. They are widely applied in human production and daily life, becoming an indispensable detection and monitoring device in industries such as power, chemical, environmental protection, food, semiconductors, and marine research and development. Burkert conductivity sensors can be categorized into electrode-type, inductive-type, and ultrasonic conductivity sensors based on their measurement principles and methods. Electrode-type sensors utilize resistance measurement based on the principle of electrolytic conductivity, with the electrode acting as a complex electrochemical system during measurement. Inductive-type sensors measure liquid conductivity based on electromagnetic induction. Ultrasonic-type sensors measure conductivity based on the changes in ultrasonic waves within the liquid. The first two types are the most widely used. Example of Burkert 8221 probe electrode installation in a purified water system using a C=0.01 clamp: How long can the electrodes of a Burkert conductivity meter typically be used after calibration? Introduction: Because conductivity standard solutions require constant temperature during use, on-site calibration is inconvenient. Therefore, sometimes we only calibrate the electronic unit and provide the level it meets. However, this always feels unreliable because unlike pH meters, where users calibrate the Burkert conductivity meter themselves using standard substances, it's different for conductivity meters. If the electrode constant is incorrect, the user won't know. Therefore, we are very concerned about only calibrating the electronic unit without checking the electrodes! We want to know how long the electrodes of a Burkert conductivity meter typically last after calibration? Answer 1: It's hard to say. Graphite and metal electrodes last longer, glass electrodes shorter. A digital thermometer can be used on-site. Next, set the temperature compensation of the Burkert conductivity meter to be tested, and roughly check the constant. The result is roughly correct. Reply 2: In principle, the Burkert electrode should definitely be tested along with the instrument. I was worried that poor on-site conditions would lead to inaccurate results, potentially misleading the user. Generally, I directly measure the liquid temperature and calculate the standard value at that temperature, which is a good idea! Unfortunately, current standard substance certificates only provide the standard substance at typical temperatures. I suggested to the drafter of the procedure that standard values be provided at as many temperature points as possible. The drafter said this is feasible, and even a temperature function expression for the Burkert conductivity electrode standard value could be provided, but this will take time. Once the standard certificate has a temperature function expression for the standard value, we only need to bring a second-class standard thermometer when we go to the factory. Burkert Ultrapure Water Conductivity Sensor Calibration Precautions:
• Sampling Port of Burkert Ultrapure Water Conductivity Sensor (Model 8221): The sampling port should be as close as possible to the online Burkert conductivity sensor. While there are no strict distance requirements, it is essential to ensure that the water sample quality at the sampling port is consistent with that at the online sensor.
• Airtight Connection: A good airtight connection must be ensured between the sampling port and the standard Burkert sensor to prevent carbon dioxide from entering the measurement system and causing an increase in conductivity (ie, a decrease in resistivity).
• Material and Length of Burkert Ultrapure Water Conductivity Sensor Sampling Pipeline: Carbon dioxide can diffuse through most polymers. The carbon dioxide diffusion rate of PP tubing is 0.4 ppb/m. This will reduce the resistivity of ultrapure water from 18.18 M²-cm to 17.90 M²-cm. Stainless steel or materials with thicker walls such as PVDF or nylon, which have low gas leakage, are recommended. Silicone rubber, ethylene resin, LDPE, FEP, and PTFE are not recommended.
• Sampling pipeline length should be as short as possible (less than 1m) to reduce carbon dioxide leakage;
• Flow rate: Although the Burkert conductivity 93161500 is independent of flow rate, carbon dioxide diffusion is affected by flow rate. A flow rate of less than 400mL/min can effectively reduce the diffusion effect of carbon dioxide;
• Temperature calibration: For conductivity measurements requiring high precision, if the temperature difference between the Burkert ultrapure water conductivity sensor sample and the ambient temperature exceeds 10°C, high-precision temperature calibration should be performed: Remove the 8221 Burkert conductivity sensor from the process pipeline and immerse it together with a standard temperature sensor in a stirred water bath. Note that it is important to ensure that they have reached equilibrium before temperature calibration.

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