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  • NR7420--绝缘油微水测试仪-.jpg

NR7420 Series Insulating Oil Trace Water Tester

The insulation oil micro-water tester adopts the classic Karl Fischer coulometric titration method. According to the law of electrolysis, the number of water molecules reacted is proportional to the number of charges. The instrument detects the number of charges (coulombs) participating in the reaction and automatically converts it into the corresponding number of water molecules. Therefore, this method has extremely high testing accuracy and extremely low testing cost, with irreplaceable advantages over other testing methods. It can reliably determine trace amounts of water in liquid, gas, and solid samples. It features high sensitivity, high accuracy, high reproducibility, and a low-power energy-saving design. It can be equipped with a built-in rechargeable battery for portable measurement and is widely used in petroleum, chemical, power, pharmaceutical, commodity inspection, scientific research, and environmental protection fields.


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Product patent

Product description

Product Introduction
  The insulation oil micro-water tester adopts the classic Karl Fischer coulometric titration method; according to the law of electrolysis, the number of water molecules involved in the reaction is proportional to the number of charges. The instrument detects the number of charges (coulombs) involved in the reaction and automatically converts it into the corresponding number of water molecules. Therefore, this method has extremely high testing accuracy and extremely low testing cost, with advantages that other testing methods cannot replace; it can reliably determine trace amounts of water in liquid, gas, and solid samples. It features high sensitivity, high accuracy, high reproducibility, low-power energy-saving design, and can be equipped with a built-in rechargeable battery for portable measurement. It is widely used in petroleum, chemical, power, pharmaceutical, commodity inspection, scientific research, and environmental protection fields.
 
Main Features
  ◆ 240×128 dot matrix LCD screen, label-free key operation;
  ◆ Uses blank current compensation and balance point drift compensation to correct the measurement results;
  ◆ Unique switch constant current electrolysis technology, reducing the power consumption of the whole machine;
  ◆ Historical records with time stamps, storing up to 500;
  ◆ Has electrode open circuit and short circuit self-check alarm function;
  ◆ Built-in high-speed thermal miniature printer, printing is beautiful and fast, with offline printing function;
  ◆ Equipped with a standard RC232 interface, it can be connected to a computer for easy processing of experimental data (optional);
  ◆ Has a screen protection function to extend the life of the LCD;
 
Technical Parameters
  ◆ Measurement range: 0ug~200mg
  ◆ Accuracy: The error is less than ±2ug when the water content is between 3ug~1000ug
  The error is less than ±0.2% when the water content is greater than 1000ug
  ◆ Resolution: 0.1ug
  ◆ Electrolysis current: 0~400mA
  ◆ Standby power consumption: 5W Maximum power consumption: 30W
  ◆ Power supply voltage: AC220V±20% 50HZ±10%
  ◆ Dimensions: 320mm*240mm*150mm
  ◆ Weight: Approximately 6kg
 

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