The working principle and common classification of moisture meter
The moisture meter is designed on the principle of thermogravimetry and is a new type of moisture detection instrument. While the moisture analyzer is measuring the weight of the sample, the heating unit and the moisture evaporation channel quickly dry the sample. During the drying process, the moisture meter continuously measures and immediately displays the lost moisture content of the sample. After the drying program is completed, the final measured moisture content value Locked to display. Compared with the oven heating method, the heater can achieve high heating power in a short time, and the sample is quickly dried at high temperature. The test results are in good agreement with the national standard oven method, and are replaceable, and the detection efficiency is much higher than oven method. It only takes a few minutes for a typical sample to complete the determination.
Other names of moisture meter:
Also known as moisture analyzer, moisture analyzer, fast moisture analyzer, moisture meter, moisture detector, moisture meter, moisture analyzer, Karl Fischer moisture analyzer.
Infrared Moisture Analyzer, designed with the principle of thermogravimetry, is a new type of rapid moisture detection instrument. While the moisture analyzer is measuring the weight of the sample, the infrared heating unit and the moisture evaporation channel quickly dry the sample. During the drying process, the moisture meter continuously measures and immediately displays the lost moisture content of the sample in %. After the drying process is completed, the final measured moisture content The value is locked for display. Compared with the oven heating method, infrared heating can achieve high heating power in a short time, and the sample is quickly dried at high temperature. oven method. It only takes a few minutes for a typical sample to complete the determination.
The instrument is easy to operate, and the test is accurate. The display part uses a red digital tube, and the indication value is clearly visible. It can display moisture value, sample initial value, final value, measurement time, temperature initial value, final value and other data, and has a computer, Printer connection function.
The moisture meter can be widely used in all industries that need to quickly measure moisture, such as medicine, grain, feed, seeds, rapeseed, dehydrated vegetables, tobacco, chemical industry, tea, food, meat and textiles, agriculture, forestry, paper, rubber, plastic, In laboratories and production processes in industries such as textiles.
On-line solid moisture meter
1. Sensor:
Moisture measurement is achieved by an open-circuit resonator installed in a rotationally symmetrical high-grade steel flange. The open-circuit resonator generates high-frequency waves (which can be microwaves or higher frequencies than microwaves), and the dielectric constant and high-frequency attenuation of solid materials are in the High frequency bands are measured, therefore, surface and capillary moisture is measured. The measurement window is made of wear-resistant materials, and ceramic materials and enhanced wear-resistant materials can also be ordered. The sensor signal is connected to the microwave online moisture meter through shielded or optional shielded 3-core cable, and the maximum length of the cable can reach 1000 meters.
2. Moisture meter:
The moisture measurement value is displayed digitally and analogously on a high-resolution liquid crystal display. Graphical user interface and integrated softkeys allow easy parameter entry and control of all functions. In a specific user memory, all parameters of up to eight products can be stored, so when changing process products, it is easy to switch to another product.
The measured values of moisture and temperature are easily received by the system as isolated and programmable mA signals, and large (Max.) and small (Min.) value alarms are output through isolated digital signal relays. Another standard serial RS2 3 2 interface (can be converted into RS4 8 5 interface by order). An optional integrated data logger is used to communicate and log moisture and temperature measurements, limit violations and printouts.
