How to correctly connect the remote magnetic flap level gauge

The remote transmission function of the remote transmission magnetic flap level gauge is realized by the reed switch remote transmission transmitter tied to the outer wall of the float tube. It can be connected with electric instruments and display instruments to achieve the purpose of control, adjustment, display and alarm. The remote transmission magnetic flap level gauge is widely used in the petroleum, chemical, metallurgy, environmental protection, electricity, building, food and other industries. However, to ensure its stable and reliable operation, the correct wiring of the reed switch remote transmission transmitter is essential. So, how should the reed switch remote transmitter be correctly wired in actual use to achieve connection with the peripheral actuator or display instrument device? This article discusses how to correctly wire the remote transmission magnetic flap level gauge in combination with the wiring diagram.

　　Figure 1 shows the Reed-11 reed switch remote transmitter, which consists of a reed switch liquid level sensor, a conversion circuit module and a protective casing. Its power supply voltage is 24VDC and the output signal is a 4~20mA standard current signal.

　　When installing and wiring the transmitter, you should first slowly open the upper cover of the shell. As shown on the right side of Figure 1, you can see that there is a liquid level signal conversion module inside. Two wiring positions can be clearly seen on the upper surface of the module, with "+" and "-" logos printed next to them. The "+" is connected to the positive pole of the power supply, and the "-" is connected to the negative pole of the power supply. When wiring the transmitter, be sure to confirm that the external power supply is 24VDC before wiring. If the power supply voltage value does not meet the requirements, the instrument will not work properly, which may easily cause damage to the transmitter.

When wiring, the cable should be passed through the waterproof connector first and connected according to the mark, where "+" is connected to the positive pole of the power supply and "-" is connected to the negative pole of the power supply. Do not connect them in reverse. After the wiring is completed, the connector nut should be tightened to lock the cable, the upper cover should be tightened, and the instrument housing should be rotated with the waterproof connector facing down, as shown in Figure 2, to prevent rain from entering the housing. The housing should be grounded as required. The cable should be a shielded two-core twisted pair copper wire with a wire diameter greater than 0.8mm², and laid in a separate conduit. Try to avoid strong magnetic field interference sources such as high-power motors and transformers. The shielded wire at one end of the cable should be reliably grounded to improve the stable transmission of the signal.

Remote magnetic flap level gauge is a combination of Flap-11 series magnetic flap level gauge and SW-11 magnetic switch or Reed-11 reed switch remote transmitter. Its core components use imported chips and imported reed switches, and the outer protection tube uses 304 material, which improves the corrosion resistance and reliability of the remote transmitter. The SW-11 magnetic switch and Reed-11 reed switch remote transmitter have passed the double explosion-proof and intrinsic safety certifications, and are more suitable for use in harsh environments with explosive hazards.