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water level gauge kit sensor
water level gauge kit sensor
For the water level gauge kit , the most important is water level sensor is a pressure sensor for measuring water level. Static pressure input water level transmitter (water level gauge) is based on the principle that the measured water static pressure is proportional to the height of the water. It adopts foreign advanced isolated diffused silicon sensor or ceramic capacitor pressure sensor to convert the static pressure into electrical signal, and then into standard electrical signal after temperature compensation and linear correction (generally 4 ~ 20mA / 1 ~ 5VDC).
It is divided into two categories: one is contact type, including single flange static pressure / double flange differential pressure water level transmitter, floating ball water level transmitter, magnetic water level transmitter, input water level transmitter, electric inner floating ball water level transmitter, electric float water level transmitter, capacitive water level transmitter, magnetostrictive water level transmitter, servo water level transmitter, etc. The second type is non-contact type, which is divided into ultrasonic water level transmitter, radar water level transmitter, etc.
The exquisite structure, simple adjustment and flexible installation provide convenience for users to use easily. The special cable with ventilation duct in the middle and special sealing technology are adopted, which not only ensures the water tightness of the sensor, but also connects the reference pressure chamber with the ambient pressure, so as to ensure the high precision and high stability of the measurement.
Type of water level gauge sensor
1. Float type water level sensor
The pontoon type water level transmitter changes the magnetic floating ball into a pontoon, and the water level sensor is designed according to the Archimedes buoyancy principle. The float type water level transmitter uses the micro metal film strain sensing technology to measure the water level, boundary position or density. It can be set by pressing the button on site.
2. Floating ball water level sensor
The floating ball water level transmitter is composed of magnetic floating ball, measuring conduit, signal unit, electronic unit, junction box and mounting parts. Generally, the specific gravity of the magnetic floating ball is less than 0.5, which can float above the water level and move up and down along the measuring conduit. The conduit is equipped with measuring elements, which can convert the measured water level signal into a resistance signal proportional to the change of water level under the action of external magnetism, And convert the electronic unit into 4 ~ 20mA or other standard signal output.
The water level sensor is a modular circuit, which has the advantages of acid resistance, moisture resistance, shock resistance and corrosion resistance. The circuit contains a constant current feedback circuit and an internal protection circuit, which can make the maximum output current no more than 28ma, so it can reliably protect the power supply and prevent the secondary instrument from being damaged.
3. Static pressure water level sensor
The transmitter works grounded on the dimension principle of hydrostatic pressure.
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