Double-flange level gauge
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Could that expert give an analysis? The double-flange level transmitter I installed is at the same horizontal level as the positive pressure side, and the gauge now shows -24.24 Kpa. How should it be adjusted so that negative values are not displayed in the header, or can negative values still be shown in this way?
Do the migration. Just perform a migration based on the size of the range.
Migrate downward or upward? The problem is that the capillary length on the positive pressure side is insufficient
This post was last edited by ylb913 on 2016-6-10 at 14:20. It’s not about moving the position of the table headers, but rather about adjusting the zero point of the table. For double-flange level gauges, regardless of the position of the gauge head, there is negative drift, and the amount of this negative drift remains constant; it equals the density of the liquid inside the capillary (kg/m3) * 9.81 N/kg * the height of the range (m), with the resulting unit being pascals, N/m2.
Both double-flange level transmitters require negative migration.
Just set the header to zero using the migration adjustment table.........
-Is the static pressure generated by the liquid column in the capillary on the negative pressure side equal to that at zero level? This has already been set. But the -24.24 kPa displayed in the header remains unchanged. -24.24 is the measured value. Is it okay if it keeps showing a negative value, as long as it can be measured? My mind can’t keep up.
You can do a reset, or migrate!
A zero-point migration can be done, and that’s it
It’s a domestically produced gauge; it doesn’t have a reset function, and the option for migration isn’t available either. Only PV USL, PV LSL, PV URV, PV LRV. All other parameters cannot be changed