Zhangzhou Interjet Automation Technology Co., Ltd. specializes in R & D and production of online measurement and control technology.
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In the process of using the moisture meter, because i2020年4月02日
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M-100 online infrared moisture meter has DC 4-20MA analog output interface and RS485, RS232 digital output interface. Communicate with PLC A. If PLC has RS485 serial port, you can choose M-100 RS485 interface to communicate with PLC. M-100 online moisture meter supports multiple protocol modes including free protocol, Shanghai Yaohua protocol, MODBUS-RUT . The communication protocol and communication case can be found at: http://www.2057112.com/upload/downs/2019081611024827.pdf B. If the PLC does not have an RS485 serial port, you can only choose the analog output port of the DC4-20MA of the M-100 online moisture meter. The M-100 outputs 4-20ma current value according to the internally set upper and lower limits. Please refer to the manual for specific settings. 2. Communication with touch screens General touch screens have RS485 ports. We recommend using MODBUS-RTU for communication. Touch screens basically support this type of communication protocol. 3. Communication with the computer requires the computer to have an RS485 port. Now ordinary computers do not have an RS485 port. You can use an RS485 to USB converter so that the computer can also read the M-100 RS-485 signal. The software on the computer is selected according to personal habits. The general configuration software can better support the MODBUS-RUT protocol, or you can choose the free protocol for continuous transmission, and the moisture value of M-100 can be read at the fastest speed.April 1, 2020 Tags: M-100 online infrared moisture meter
1. Accuracy of online moisture meter: ①Near-red moisture meter: measuring materials with the same color and composition, when the measurement range is plus or minus 5% of the standard value, for example, the standard moisture of the material is 10%, then the measurement range is 5% -15%, then the M series moisture The accuracy of the instrument can reach plus or minus 0.3%. If the moisture content of the material is relatively low, for example, the moisture of the material is 2%, and the measurement range is about 0.5-4, the accuracy of the M series moisture meter can reach plus or minus 0.1% ②RF wave moisture meter: When measuring the bulk density or density of materials, the user needs to calibrate the model. The more model parameters, the higher the accuracy. For example, when calibrating the model, it is calibrated from two moisture values, such as 5.0 and 7.0 moisture values. Calibration, when the RF-1000 moisture meter measures 6.2 moisture, the accuracy can reach plus or minus 0.3%. The more calibration model data, the higher the accuracy, the highest is 0.05%.April 1, 2020 Label: Online Moisture Meter
①Near-red moisture meter: When there is no water seepage on the surface, the near-infrared moisture meter can detect a moisture content of 0-90%, but any near-infrared moisture meter cannot directly measure from 0 without changing the parameters. Up to 90%, when the normal near-infrared moisture meter is in the same group of parameters at plus or minus 5% of the standard value, for example, the standard moisture of the material is 10%, then the measurement range is 5% -15%, then the M series moisture meter The accuracy can reach plus or minus 0.3%; for example, from 5% to 60%, without changing the parameters, the accuracy must be a certain standard, but it is impossible to achieve with any near infrared moisture meter! ! ! The near-infrared moisture meter is based on the reflection of the spectrum. If the moisture is less than 0.5%, the infrared light at this time is basically unable to absorb. The near-infrared moisture meter can only reflect the trend and cannot achieve any accuracy. ②RF wave moisture meter: The RF wave moisture meter can detect the moisture content under the condition that the material does not seep. If there is no modeling, the RF wave moisture meter has no accuracy and measurement range, for example, only set 5%, 8% With two moisture levels, the moisture meter can only measure a moisture content between 5% and 8%. If the material can squeeze out the water, the RF wave moisture meter will show that the moisture value exceeds the standard! ! ! Therefore, it is not easy to measure the material that can pinch out the water with radio frequency waves.April 1, 2020 Label: Online Moisture Meter
①Near-red moisture meter: The probe of the near-infrared moisture meter will emit a beam of infrared light. It is necessary to ensure that this infrared light can completely irradiate the material. The material at the position of the aperture must be full, flowing but must also be continuous. The aperture There is no gap in the material at the location. Otherwise there will be errors! ! If it is irradiated through glass, the material behind the packaging glass is full and no pores. ② RF wave moisture meter: The probe of the RF wave moisture meter also emits a spherical electromagnetic field. The material in front of the electromagnetic field must also be full, there must be flow but it must be continuous, and the material does not have gaps. Otherwise there will be errors! !April 1, 2020 Label: Online Moisture Meter
The M-100 online moisture analyzer has been used for many years in the Jinjiang factory of Fujian Fengzhu Textile Technology Co., Ltd. The instrument is stable and reliable, the measurement data is true and accurate, and the measured moisture signal is connected to the on-site automatic control system. Under the guarantee of the moisture index of textiles, the labor intensity of workers is reduced, and the instrument is recognized and praised by users. .
The M series of online moisture analyzers can directly detect the moisture content of fertilizers on the conveyor belt. It uses a high-speed motor with 80 rotations per second and a maximum measurement speed of 8ms, which can effectively reduce the impact of belt material ups and downs. Use multi-band near infrared light, make full use of multi-band reference wavelength to ensure stable and accurate measurement.
The M series online moisture analyzer can detect the moisture of coal on the conveyor belt in real time. It adopts a high-speed motor with 80 revolutions per second and the maximum measurement speed reaches 8ms, which can effectively reduce the impact of the fluctuation of the belt material. Use multi-band near infrared light, make full use of multi-band reference wavelength to ensure stable and accurate measurement.
The M-300S consists of a detection probe and a display screen. The detection probe is installed at the corresponding position of the object to be tested, and converts multiple sets of different near-infrared light signals to analog to digital; the display screen is a hanging measurement box with a touch screen and has a Chinese display. , History, curve and other functions. M-300S is the same standard and equipped as imported NIR moisture meter.
We can see that in a dusty environment, the M-100 online moisture analyzer can work reliably and stably, and can keep workers away from the harsh field environment to control the moisture in the production process.
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