pH Electrode ISE Online Ammonia Nitrogen Sensors

Description

Daruifuno online ammonia nitrogen sensor NH351 does not require reagents, is green and pollution-free, and can be monitored online in real time. Ammonia nitrogen electrodes usually consist of three main parts: electrode body, reference electrode and membrane layer. The electrode body is usually made of sliver or sliver/sliver chloride and is connected to cable to transmit the measurement signal to the detection instrument. The reference electrode usually uses a silver/silver chloride electrode, which is used to provide a stable potential and maintain pH stability. The membrane layer is a special material that selectively allows ammonia nitrogen to pass through while preventing other impurities from reacting with the electrode. The ammonia nitrogen sensor is based on the reaction principle of competition between ammonia nitrogen and hydrogen ions in water for free electrons. At a specific pH value, ammonia nitrogen will be replaced by hydrogen ions(H+) in water molecules to form ammonium ions(NH4+), releasing an electron at the same time. When the ammonia nitrogen electrode is placed in the sample, its surface is coated with a layer of special material, called a film layer. This film layer can selectively allow ammonia nitrogen to pass through and react with the electrode medium substance on the electrode surface to generated a current signal. By measuring the size of the current signal, the concentration of ammonia nitrogen in the sample can be calculated. In order to ensure accurate measurement results, the ammonia nitrogen sensor needs to be calibration, and the sensitivity and response time of the electrode are adjusted according to the concentration value of the standard solution to ensure the accuracy of the measurement results.

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Specification

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Features

It should be noted that this ammonium nitrogen sensor is only suitable for freshwater applications, not seawater. Delfino company focuses on the research, development and production of water quality instruments. Our main products includ pH ORP analyzer, conductivity analyzer, turbidity analyzer, COD analyzer, dissolved oxygen analyzer, ammonium analyzer, chlorine analyzer, etc. The pH electrode, ammonium ion electrod and reference electrod of this NH4-N sensor are replaceable, and the cleaning brush is also removable and replaceable. You can purchase these parts separately. If you are interested in our ammonia nitrogen analyzer, please contact us!

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