Setting of the transmitter range for water level
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The height of the magnetic flap level gauge in the deaerator is 2000 mm, and the range of the transmitter is from -1300 mm to 1300 mm. The balance tank of the deaerator is a two-chamber balance vessel; the steam side of this tank is filled with water. The range of the transmitter has now been changed to from -2000 mm to 0 mm, but the values obtained are quite different from the actual values. Is the range setting of the transmitter correct?
The range must be calculated using the formula (Hρg). Since density changes with temperature, it is necessary to observe the measurement results once stability is achieved; if there is a discrepancy, adjustments can be made online.
Rephrased: Teacher Pig is right; the problem description is not clear, making it difficult to answer! ;P
The poster said, “The height of the magnetic flap level gauge is 2000 mm.” It is estimated that the large error is a conclusion drawn by comparing it with the magnetic flap level gauge. Is the sampling point of the two-chamber equilibrium vessel consistent with it?
I’ve read it several times but still don’t understand. Should I get an image?
You have the one with a balance cylinder. The amount of liquid poured in can vary. Surely you can’t just enter an integer directly. It is necessary to go to the site and make corrections by comparing with the magnetic flip plate.
What exactly is this transmitter of yours?
If it’s a differential pressure transmitter, how do you determine the settings? You have set it to -2000-0 – isn’t that set on the DCS? Shouldn’t the zero point and the range in KPa be set on the transmitter itself? I’m really confused. However, based on your current situation, there is an issue with the zero-point range setting of your transmitter. I’ll send you the calculation method for the zero-range of a two-chamber balanced container in a bit
The differential pressure transmitter can be set according to the water column; this expression is omitted, so there’s no need to take it seriously. However, temperature correction of the water column is required. DCS can be set in meters or as a percentage. We are* used to percentages.