I have a question regarding level gauges...
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When the specification sheet indicates that the flange diameter of the tank is DN40, should we give priority to magnetic flip-type level gauges for selection? When the flange diameter is greater than DN50, then pressure sensor-based level gauges should be considered. The reason for this is that the accuracy of the transmitter diaphragm is not satisfactory when the diameter is below DN50. Is this analysis method appropriate?
A suitable hammer from Sichuan~~~~~~~, or not either. .
These are two different types of instruments: the magnetic flip-type instrument is a field-mounted device, while the pressure sensor-type level gauge is a primary instrument that functions by converting and transmitting signals.
Where is there that much precision? If conditions permit, one on-site level gauge and one remote level gauge. It’s sufficient to compare the two level gauges. Magnetic flap level gauges are considered field-mounted level gauges; the distance that the float moves can only be observed manually, so their accuracy is not very high. Flange-type or other types of level gauges convert the measurement into precise numbers, even to the millimeter level. If accuracy requirements aren’t strict, it’s possible to use a magnetic float combined with a magnetostrictive level gauge for remote monitoring – this depends on the process requirements. Normal double-flange level gauges also provide satisfactory accuracy even for sizes below DN50; the issue might lie with the gauge purchased – if domestic ones don’t work well, one could consider joint-venture or imported models.
It doesn’t really matter; moreover, the order is reversed – the table should be chosen first, and then the equipment openings determined. It’s okay if we use old equipment; we can also use Unicom pipes, right?
It mainly depends on the importance of this liquid level, that is, the safety requirements. For low requirements, a simple on-site level gauge such as one with a flip plate is sufficient; if regulation or interlocking is needed, a remote transmission level gauge is required. For a DN40 port, if we use a reducing fitting, can’t we then install a DN50 gauge?
It’s not a fixed concept; simply put, any level gauge might be suitable or might not be suitable! It depends on the specific process requirements and usage requirements!
A variable-diameter connection will work just fine like this.
The approach is wrong. What is the purpose of instrument selection? It’s not to seal the holes in the instrument interface. When selecting instruments, consider suitability first (which is the most important factor), stability, speed, and accuracy, and then take cost-performance into account. Of course, there are other factors as well.