Reed switch three-wire liquid level meter wiring method: 1. The sensor is installed on the container to be measured, and the lower end of the sensor is firmly fixed to the bottom of the container. 2. Due to the limitations of railway transportation, items larger than 4m must be packed in sections. The user must weld by themselves during installation, and the welds should be filed straight after welding.
Hydraulic pressure test (pressure less than 0.6MPa) must be carried out to confirm that there is no leakage before use. For F-type sensors, the fluoroplastic sleeve that comes with the box must be put on and fixed; or the user can solve the problem by himself. Transportation issues. The reed level gauge type is a measuring tool consisting of a reed switch and a precision resistor.
The main conduit of the dry yellow liquid level sensor is equipped with a set of reed switches and precision resistors. When the magnetic float outside the tube changes up and down with the liquid level. The dry reeds located at the liquid level in the main conduit are turned on in sequence to change the resistance value of the sensor. The conversion circuit module in the junction box converts the resistance value into a 4-20mA current output.
Structure Principle MY type is an analog liquid level transmitter, which is composed of a liquid level sensor and a signal converter. The liquid level sensor consists of a number of reed switches and a number of resistors installed in a φ20 stainless steel protective tube. The protective tube is fastened to the outside of the measuring tube (main tube); the signal converter is composed of an electronic module.
Placed in the explosion-proof junction box at the top or bottom of the sensor 3. Main technical parameters 1. Range: determined by the measuring range H; 2. Error: ±10mm; 3. Output signal: 4~20mA.DC (Two-wire system); 4. Load resistance: ≤550Ω; 5. Supply voltage: 24V.DC; 6. Outlet: M20×1.5 (inner).
7. Ambient temperature: -40~+60℃; 8. Explosion-proof grade: dⅡBT1-4; 9. Shell protection grade: IP65.