Installation location of pressure transmitter with capillary
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This post was last edited by liu530014416 on 2020-4-16 at 16:12. Dear teachers, this is a gauge pressure transmitter; the flange on the pressure transmitter is about 1.2 meters higher than the gauge face. This pressure controller operates at a gauge pressure of 10 Kpa, with quite strict control. How to solve this situation now? 1. Install the header at the same height as the upper flange, so that no modifications are required for the pressure transmitter. (The instrument is likely not functioning properly.) 2. Check the pressure being measured by the transmitter; then adjust the range by using the handheld device to change it. 3. I heard that the transmitter can intelligently output 4 mA based on the currently measured pressure. How is this achieved? It’s mainly due to the unprofessionalism of the instruments; many instruments have been misadjusted in the past. For example, with double-flange level gauges, when the actual liquid level is 0, the DCS shows 10%. The instrument’s zero point is adjusted without investigating the reason – it’s simply the zero point that is adjusted, I guess. //////////////////// Thank you all. Since this is an absolute pressure transmitter, it cannot be zeroed out; only the range can be changed.
Installing it below is no problem as it facilitates viewing and maintenance by personnel. The capillary needs to be secured; once it is fixed, it’s possible to adjust the range or set it to zero or full scale
Migration or reset cannot be performed until the capillary is properly secured
This post was last edited by FengChuiPiPi_boyOk on 2020-4-18 at 10:58. There’s no such thing as an upper flange in your case; this is referred to as a single flange. If the gauge head is positioned lower than the flange, it should currently be displaying a negative pressure. Temporarily set the table header at the same height as the flange, measure the pressure value, and then return it to its current position (to facilitate instrument maintenance). Use the manual controller to change the pressure value to that corresponding to the previous height; this is what is known as zero-point adjustment, and there is no such thing as range adjustment. I’m sorry, I misunderstood; the above applies to gauge pressure
Isn’t that exactly what the instrument is supposed to do?
Can it still be installed on top?
It doesn’t matter where the header (transmitter) is installed; it can be moved to another location.