Storage tank level measurement
Thread Content
Which model is appropriate for the DCS remote measurement of storage tank level? The exhaust gas from the 20-cubic-meter storage tank is discharged directly, while that from the 100-cubic-meter tank goes into an exhaust gas condenser; the 300-cubic-meter tank is equipped with a nitrogen seal. Let’s discuss which type of remote level gauge would be suitable in each case.
Please specify the measuring medium, medium pressure, temperature, density, as well as whether it is to be installed at the top or on the side, etc., to facilitate the manufacturer’s selection.
What was said upstairs is correct; it depends on your installation method and so on, and you need to choose the appropriate instrument for measurement
The media include toluene, ethyl acetate, phosphoric acid, etc. The pressure is at atmospheric level (with exhaust gas being vented), and the temperature remains stable at room temperature (phosphoric acid requires heating in winter). Currently, all remote-level gauges are pressure transmitters, and there are hardly any that provide accurate readings
It’s definitely impossible to determine medium instability using pressure-based methods; it is recommended to use devices with remote transmission capabilities such as magnetic flap switches. Provide the manufacturer with detailed information regarding the process conditions – if the details are too vague, it will be difficult for the manufacturer to make a choice
Why is it not allowed? Is a single-flange level transmitter or a double-flange one being used? Is there a problem with the installation location? Is the dielectric density clearly provided by the supplier?
A submersible level gauge with a sensor diaphragm that is not in contact with the liquid – designed specifically for organic solvents. It’s easy to use; it works well with both open tanks and tanks under pressure. Application example: measuring the density of toluene solutions in enamel tanks used by Jiangsu Kuaida Pesticides. The density is 100 times more difficult to measure than the liquid level; we used two specialized probes to handle this issue. There have been several batches of orders placed in total. Measuring the liquid level of such liquids is a piece of cake for our factory. :lol
Single-flange type, installed at the bottom of the storage tank. As for how to provide the density, I don’t know, as I wasn’t involved
It depends on the medium in the storage tank; if the density of the medium changes significantly with temperature, using pressure to measure the level is not very appropriate, and temperature compensation is required. With a nitrogen seal, differential pressure is generally required to measure the liquid level; a radar level gauge can also be considered