Is there any high temperature resistant pressure transmitter you can recommend?
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When selecting a boiler, because the temperature index of the boiler is very high, I cannot find a corresponding pressure transmitter, so I would like to ask an expert, have you ever used this kind of pressure transmitter? The highest medium temperature reaches 900 degrees
Find WIKA, a company in Suzhou that customizes capillary flanges for special industries and mines.
In this application, it is best to install a heat pipe or heat sink. After the temperature is lowered, there are many transmitters available.
3# cooldog_I don’t quite understand how to add 4412.
At this temperature, you can only add an extension tube to cool it before installing it. This way you have more choices. It is in direct contact with the measurement medium. If it is resistant to high temperatures, a good pressure change is generally about 350 degrees.
How high is the temperature? You can order a Rosemount pressure sensor and use an EJA transmitter. Only one company can make high temperature sensors.
Use the backflush method to measure the pressure and that’s it!
To add, as far as I know, there is no diaphragm or sensor that can directly measure a high temperature of 900 degrees, so the only way to improve it is in the measurement method.
It is true that high-temperature media can be measured using isolation fluid. But the general furnace has negative pressure, so how do you fill it with isolation fluid? After the isolating fluid is filled, the isolating fluid is pumped away as soon as the instrument is put into use (the reason for the slight negative pressure in the furnace).
The backflush method is still useful for liquids, but for gases... LZ, why don't you believe me? WIKA Suzhou can customize diaphragms/flanges. I have asked them before to customize diaphragms/flanges with a temperature of more than 300 degrees. To match them with EJA and 6-meter capillary tubes, you can ask.
The heat pipe is a modified pipe, and a section of pipe is connected to the original pipe. I've seen it done live. Their temperature is 300 degrees +.