Liquid level transmitters include input type liquid level transmitter (rod type, cable type), flange type liquid level transmitter (single flange, double flange), magnetic flap liquid level transmitter and floating ball Liquid level transmitter, etc. The input transmitter has the Huahai series of input liquid level transmitter, which is characterized by flexible installation, convenient use, simple effect, and can display signal isolation and amplification on site, cut-off interference design, and anti-interference liquid level transmitter has input Type level transmitter (rod type, cable type), flange type level transmitter (single flange, double flange), magnetic flap level transmitter and float level transmitter, etc. The input transmitter includes the Huahai series of input liquid level transmitter, which is characterized by flexible installation, convenient use, simple effect, and can display signal isolation and amplification on site, cut-off interference design, strong anti-interference ability, anti-condensation and anti-condensation Lightning, anti-corrosion, anti-clogging design, probe diameter 19mm～42mm, optional wiring reverse and overvoltage protection, current limit protection, ultra-wide price range, easy to choose. Huahai series input type liquid level transmitter. Huahai series of submersible liquid level transmitters are representative products. Its superior performance indicators lead domestic well-known brands of submersible liquid level transmitters, catching up with the world's first-class submersible liquid level transmitter products. Its super high cost performance made its sales volume lead in 2009 of the same kind of input type liquid level transmitter products in the country. Working principle: The input type liquid level transmitter is a static pressure type liquid level gauge that uses the principle of pressure to measure the liquid level. Generally, the length of the input cable is equal to the length from the lowest point to the highest level of the liquid level to be tested plus the distance from the installation plane to the highest point of the liquid level. Using the principle of static pressure measurement: When the input type liquid level transmitter is dropped into a certain depth in the measured liquid, the formula for the pressure on the front surface of the sensor is: Ρ u003d ρ .gH + Po where: P: level gauge Pressure on the front liquid surface ρ: density of the measured liquid g: local acceleration of gravity Po: atmospheric pressure on the liquid surface H: depth of the liquid level transmitter into the liquid at the same time, the pressure of the liquid is introduced to the sensor through the gas-conducting stainless steel Positive pressure cavity, and then connect the atmospheric pressure Po on the liquid surface to the negative pressure cavity of the sensor to offset the Po on the back of the sensor, so that the pressure measured by the sensor is: ρ .gH. Obviously, the liquid level can be obtained by measuring the pressure P depth. Typical application areas of input liquid level transmitters:? Low level monitoring of open liquid tanks? Well or open water depth or level measurement? Groundwater level measurement? Sewage treatment, water supply? Chemical and pharmaceutical industries? Constant pressure water supply System and other industries liquid level measurement and control. Through temperature compensation and linearity correction. Converted into 4-20mADC standard current signal output. The sensor part of the input type liquid level transmitter can be directly poured into the liquid, and the transmitter part can be fixed with a flange or a bracket, which is extremely convenient to install and use. Features of the input type liquid level transmitter 1. Long service life The diaphragm of the liquid level transmitter adopts a high-tech laser modulation circuit, and the sensor housing is made of stainless steel. 2. Convenient installation It is only necessary to put the probe of the drop-in liquid level transmitter into the liquid, and connect the signal wire to the secondary instrument for liquid level measurement. 3. Good temperature stability The input type liquid level transmitter itself realizes temperature compensation within 0-70℃, and a temperature compensation circuit is added to the signal conversion circuit to eliminate the influence of circuit temperature drift on accuracy, thereby improving accuracy.
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