The instrument capable of detecting the moisture content of various organic and inorganic solids, liquids, gases and other samples is called a moisture analyzer. According to the measurement principle, physical measurement and chemical measurement can be classified into two categories. The physical measurement method commonly used weight loss method, distillation layering method, gas chromatography analysis method, etc., chemical measurement methods mainly include Karl Fischer, toluene method, etc., the international standardization organization put Karl Fischer method It is designated as an international standard for the determination of trace moisture, and our country has also adopted this method as a national standard for the determination of trace moisture. Infrared rapid moisture analyzer, designed with the principle of pyrolysis weight, is a fast moisture detection instrument. While measuring the weight of the product, the infrared heating unit and the moisture evaporation channel quickly dry the sample, and the moisture meter continuously measures and instantly displays the % moisture content lost by the sample, and the final measured moisture content value is locked. Compared with the international oven heating method, infrared heating can reach the maximum heating power in the shortest time, and the detection efficiency is much higher than the oven method. The general sample can be measured in just a few minutes. The operation is simple, the test is accurate, and the display part adopts a red digital tube, which can respectively display the water value, the initial value of the sample, the final value, the measurement time, the initial temperature value, the final value and the like, which are clearly visible. And has the function of connecting with computer and printer. Application range Can be widely used in all industries that need to quickly measure moisture, such as medicine, plastics, chemicals, food (fish, dehydrated vegetables, meat and fish processing, noodles, flour, biscuits, moon cakes, etc.), food, feed, seeds, vegetables Seed, tea and textile, agriculture, forestry, paper, rubber, textile and other industries in the production and experimental process Instrument operation Instrument operation steps (taking paper as an example) The first step: press the calibration button, put the weight, and automatically calibrate. (Periodic effect, no need to start up every day) Step 2: Take the sample, press "↑" to store the weight, press the test button to start working. Step 3: During instrument heating, the instrument is displaying the missing moisture value. Step 4: At the end of the measurement (about 3 minutes), the instrument displays the final moisture value and records the data. Grain moisture detection method How to use a rapid moisture analyzer to detect corn moisture? 1. Warm up for half an hour after starting up, and preheat for one hour when the temperature of the instrument is zero. 2. Place the weight in the middle of the sample tray. The instrument can be tested directly within ±0.02, otherwise calibration is required. 3. Take the crushed cornmeal in the middle of the sample pan 4. Press "↑" 5. Shake well with the bracket 6. Put it back on the tripod, cover the heating cylinder, and after saying that it is stable, press "Test" and the instrument starts working. 7. After the test is completed, the moisture analyzer automatically alarms, press "Display", each time you can display different parameters. 8. Press the "Clear" button first, then press the "Zero" button to clear the last test data. The second experiment can be performed when the temperature drops to 30 °C. Karl-Fischer Coulomb Moisture Analyzer Principle In 1935, Karl Fischer first proposed a method for determining moisture using capacity analysis, which is the visual method in GB6283 "Determination of Moisture Content in Chemical Products". The visual method can only measure the moisture of a colorless liquid substance. Later, it developed into the electricity law. With the development of technology, the coulomb method and the volume method are combined to introduce the coulomb method. This method is the test method in GB7600 "Measurement of Moisture Content of Transformer Oil in Operation (Coulomb Method)". The classification visual method and the electricity method are collectively referred to as the volume method. The Cartesian method is divided into two methods: the Cartesian volume method and the Cartesian coulometric method. Both methods have been standardized by many countries as standard analytical methods for calibrating other analytical methods and measuring instruments. 2. The Karl Fischer method for the determination of moisture is an electrochemical method. The principle is that the Karl Fischer reagent in the electrolysis cell of the instrument is injected into the aqueous sample when the equilibrium is reached, the redox reaction of the water ginseng and iodine and sulfur dioxide, in the presence of pyridine and methanol, the formation of pyridine hydroiodide and pyridine thiosulfate. The consumed iodine is generated by electrolysis at the anode, so that the redox reaction continues until the water is completely exhausted. According to Faraday's law of electrolysis, the iodine generated by electrolysis is proportional to the amount of electricity consumed during electrolysis. Card Moisture Analyzer Principle Online solid moisture meter 1, sensor: Moisture measurement by means of an open-circuit resonator mounted in a rotating-symmetric high-grade steel flange application application It is realized that the open circuit resonator generates high frequency waves (which may be microwave or higher frequency than microwave), and the dielectric constant and high frequency attenuation of the solid material are measured in the high frequency band, and therefore, the surface and capillary water are measured. The measuring window is made of wear-resistant material, and ceramic materials and reinforced wear-resistant materials are also available. The sensor signal is connected to the microwave online moisture meter via a shielded or optionally rated 3-core cable with a maximum cable length of up to 1000 meters. 2, moisture meter: Moisture measurements are digital and analog displayed on a high resolution LCD display. Graphical user interface and integrated soft keys make it easy to enter parameters and control all functions. In a specific user memory, all parameters of the top eight products can be stored, so when changing the process product, it is easy to switch to another product. Moisture and temperature measurements are easily received by the system as isolated and programmable mA signals, and maximum (Max.) and minimum (Min.) alarms are output through isolated digital signal relays. There is also a standard serial RS2 3 2 interface (optional to convert to RS4 8 5 interface). An optional integrated data logger for communication protocolization and recording of moisture and temperature measurements, over-limits and printouts. The online solid moisture meter is designed as a 42-TE-table with handle and foot, on-site wall mount (IP65) with observation window or 193HE industrial control chassis. 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