Under long-term negative pressure of 80–90 KPa and a temperature of around 90 degrees, the EJA118E double-flange level transmitter (with ordinary silicone oil) is selected
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With a long-term negative pressure of 80–90 KPa and a temperature of around 90 degrees, the EJA118E double-flange level transmitter (using ordinary silicone oil) is suitable for this application. I’m not concerned about the temperature issue, but I am worried that the diaphragm might bulge outward. . .
This post was last edited by 1111111 on 2017-10-16 at 21:30. Whether the drum is bulging or not, you don’t need to worry. . . Even if he hits her vulva, she still won’t get pregnant; he’s not capable of giving birth to a baby for you~~~~~:lol You should focus on whether the differential pressure level is affected by changes in vacuum level – that’s what really matters. In the diagram below, the recording curve was posted by Haiyou, while the text was written by me
Equipment with high negative pressure cannot make good use of double flanges, but it can be used for slight negative pressure.
Is this diagram the system for the central control unit? Which series is it?
At this temperature, bulging generally does not occur. We used high-temperature full vacuum here, and after some time bulging really did occur.
Generally not, unless there is a quality issue; with domestic small factories
I’m not sure about EJA; we use Honeywell’s version, under similar operating conditions. Basically, a new one has to be replaced during each maintenance session. It is the deformation of the diaphragm that results in abnormal nerve data being measured.
According to the EJA118E data, under the measurement conditions, the diaphragm will not bulge. If bulging occurs during the warranty period, the manufacturer can be requested to provide warranty coverage. I provide information on the EJA118E diaphragm-sealed differential pressure transmitter for reference. I hope this can help you.
The EJA-A series should be fine; under vacuum conditions, it is advisable to choose diaphragms with a small diameter.
I’ve been studying the common issues with these instruments, and I’ve identified some problems. I’m sharing this information with you as well as with other forum members, just as a reminder. I’m not interested in Dogde’s “series of failed military campaigns”{:3_51:}. . .
Don’t slander small factories – the differential pressure gauges from large factories also stink like shit under vacuum conditions. . . Many sea friends have spoken about this; it’s not just isolated cases. . . . . . . What’s the use of having a big factory if it can’t be utilized?