Level gauge--how does it display after freezing?
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The types of level gauges include fork-vibration type, magnetic floating type, pressure type, ultrasonic type, sonar wave type, magnetic flap type, radar type, and others. Let’s talk about the differential pressure type first. What is the value displayed after the aforementioned pressure point is frozen? What is the value displayed after the lower pressure sensing point is frozen? Both the upper and lower values are frozen – what is the displayed number?
I feel frozen from head to toe; it should show 0, right?
What will happen to the display when the transmitter freezes?
Overpressure should be displayed, as the volume increases after freezing and pressure rises
The liquid level does not fluctuate; there is no adjustment mechanism
The pressure tap has frozen; whatever value the gauge shows is possible… there’s no pattern to this at all. Inspection complete.
The pressure mentioned above is low pressure, right? In a low-pressure pipeline, condensation occurs while high-pressure air is supplied in one direction. There are two possibilities: first, if the core measuring element is not damaged, the displayed value should be lower than the normal value; second, if the core element is damaged (which is usually the case), high and low pressures mix together, resulting in a display value of 0. When there is condensation in the high-pressure pipeline, there are also two possibilities: if the core element is not damaged, the pointer moves in the opposite direction (if the gauge has a stop mechanism or overpressure protection, it will stay at 0), going below zero. If the core element is damaged, high and low pressures mix together, again resulting in a display value of 0. If both high and low pressures are frozen, the display value is generally 0. After adding liquid to the filling port, the gauge should be placed in a dry and clean location; it should not freeze under such conditions. If the pipeline freezes, remove the gauge and use air pressure from a tank to blow out the ice. If that doesn’t work, use an air compressor or liquid nitrogen to clear the ice.
It often freezes here; regardless of whether the upper or lower flange freezes, the values don’t follow a fixed pattern – they can be either at their maximum or at their minimum
It’s hard to tell about this. The values certainly don’t follow any pattern; for example, the length to which the pressure tapping pipe freezes varies, and so does the degree of expansion, which means the values will definitely differ.
I mean, any value could be displayed, from 0 to 100, or even values outside the range?
It’s hard to say. 0 I don’t think that’s likely to happen. It will definitely be present at full scale. If the upper flange freezes while there is no lower flange, and the liquid level changes, could this lead to an overload condition? ! ! ! ! In the group, Brother Pig1111111 has a solid grasp of things, from basic theories to practical applications (in my opinion). It can be explored in depth. Thank you