What is remote transmission with magnetic flap switches?
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What principle is used in magnetic flap remote transmission? How accurate is it?
This post was last edited by masanhong on 2010-6-1 at 16:29. The detection tube of the transmitter contains a set of reed switches and precision resistors; as the magnetic float outside the tube moves up and down with the liquid level, the reed switches located at the liquid surface inside the detection tube turn on in sequence, thereby changing the resistance value of the transmitter. The conversion circuit module in the junction box then converts this value into a standard current signal of 4–20mA, enabling remote transmission, alarm functions, and automatic control. The accuracy is generally ±10mm, which is sufficient for level detection in ordinary equipment ； The use of important equipment is not recommended (personal opinion, for reference only).
Magnetic flap level gauges do not have remote transmission capabilities. By installing a reed-type or magnetostrictive level transmitter along with a magnetic flap level gauge on an external floating buoy. Reed switch types have lower precision, while magnetostrictive types can achieve a precision of around 0.5%, which meets the requirements for process control.
Magnetic flip versions come without a transmitter. . Generally, it’s either externally bonded or internally inserted magnetostrictive technology, which ensures both accuracy and stability; however, the brand should be at least a joint venture or higher quality. . The imported K-TEK has pretty good quality.
Magnetic flip mirrors are generally used for on-site indication; they can also be equipped with remote transmitters to send signals to the control room. However, the accuracy of these signals is not very good. The specific principle is described on the second floor
The price of K-tek’s magnetostrictive materials is worlds apart from those of domestic products!
The magnetic flip columns we use in the plant come with level control, and their quality is quite good.
I’ve learned something, gained some insight; thank you
I've said enough... I won't express any opinions anymore...
The resolution of magnetic flap remote transmission can reach 6.35 mm, with good stability as well. It generally meets the on-site requirements.
The 2nd floor explains the principles very accurately. Regarding the measurement accuracy of magnetic flap level gauges, the accuracy displayed on-site differs from that of the remote transmission value; the accuracy shown on-site corresponds to the accuracy of one magnetic flap (10 mm). The longer the level gauge, the higher its measurement accuracy. The measurement accuracy for remote transmission depends on the magnetic float inside the float tank, as well as the reed switch and precision resistor inside the detection tube; generally, the remote transmission accuracy can reach 0.5%.