Online portable multi-functional intellgence fluid density meters

Abstract

This invention relates to an on-line portable multifunction intelligent liquid density instrument with integral measurement of temp and density including a sensor and an intelligent dieplay recording control device connecting with it and the sensor includes temp sensor and pressure different sensor composed of a top and a bottom pressure sensor detecting top and bottom pressure separately, the intelligent display recording control device includes a single chip processor connecting with the pressure sensor and temp sensor and transmitting and outputting density and temp by D/A converter.

Description

1. Technical field: [0001] The invention relates to an online portable multifunctional intelligent liquid density meter, which can not only be used for online real-time monitoring of the density of liquid substances in industrial containers, laboratory containers and deep well containers, but also can be used in a portable manner, and can be inserted into the medium at any time. Observe the recorded density value. 2. Background technology: [0002] The traditional measurement method of density is to use a balance to weigh the weight of the liquid, then use a graduated cylinder to measure the volume of the liquid, and then calculate the density of the liquid. For many environments, especially industrial field environments, this method is not suitable for field applications. By retrieving Internet information, it is found that the online real-time measurement products of density parameters are very scarce, and most of them are low-precision products. Due to the limitation of ...

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Problems solved by technology

By retrieving Internet information, it is found that online instant measurement products of density parameters are very scarce, and most of them are low-precision products. Due to the limitation of their measurement principles, on the one hand, the requirements for the measurement medium Relatively harsh, on the other hand, it is necessary to use related instruments when measuring

The inventor once used the liquid level transmitter and digital display instrument based on the principle of remote transmission differential pressure to realize the online observation of the density of the liquid medium in the industrial tank. The highest total accuracy of the system can only reach the full range of the differential pressure liquid level transmitter. 0.5% of 0.5%, this kind of industrial online density measurement method using remote differential pressure level transmitter has the following defects: 1. The application range is narrow, and it can only be applied to tanks on the ground; 2. It needs to be accurate on site Measuring the vertical distance between the upper and lower probes is easy to cause human error; 3. It is almost impossible to perform secondary calibration on site. In addition to dismantling the differential pressure level transmitter to calibrate the range, re-installation also requires re-calibration. The vertical height between the installation positions is measured; 4. The temperature error is large

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