Submersible level sensor is a pressure sensor used to measure liquid level. Based on the principle that the hydrostatic pressure of the measured liquid is proportional to the height of the liquid, it uses an isolated diffused silicon sensing element or a ceramic capacitive pressure sensing sensor to convert hydrostatic pressure into an electrical signal, and then through temperature compensation and linear correction, converts it into a standard electrical signal. It is generally suitable for liquid level measurement of various media in systems and industries such as petroleum, chemical, metallurgy, electric power, pharmaceuticals, water supply and drainage, and environmental protection.

 Submersible level transmitter is based on the principle that the hydrostatic pressure of the measured liquid is directly proportional to the height of the liquid, and uses the piezoresistive effect of diffused silicon or ceramic sensing elements to convert hydrostatic pressure into an electrical signal. After temperature compensation and linear calibration, it is converted into 4-20mADC standard current signal output. The sensor part of the submersible level transmitter can be directly immersed into the liquid, and the transmitter part can be fixed with a flange or bracket, making installation and use extremely convenient.

Working principle

 Hydrostatic measurement principle:

 When the level transmitter is immersed to a certain depth in the measured liquid, the pressure formula on the liquid-facing surface of the sensor is:Ρ=ρ.g.H + Po

Where:

P: pressure on the liquid-facing surface of the transmitter ρ: density of the measured liquid

g: local gravitational acceleration

Po: atmospheric pressure above the liquid surface

H: immersion depth of the transmitter in the liquid

At the same time, the pressure of the liquid is introduced into the positive pressure chamber of the sensor through air-conducting stainless steel, and then the atmospheric pressure above the liquid surface Po is connected to the negative pressure chamber of the sensor to offset the Po on the back of the sensor, so that the pressure measured by the sensor is: ρ.g.H, obviously, by measuring the pressure P, the liquid level depth can be obtained

3Main technical specifications

Measurement range:0.0～110m

Accuracy:0.1,0.2,0.5,1.0 class

Operating temperature:-20～80℃

Output signal: two-wire 4～20mADC, three-wire voltage output, 485 communication, HART protocol

Power supply voltage: standard 24VDC（12～36VDC）

Dead zone:≤±1.0%FS

Load capacity:0-600Ω

Relative humidity:≤85%

Protection rating:IP68

Explosion-proof marking:ExiaⅡCT4-7

Since its establishment, Xi'an Shenghongchuang Instrument Co., Ltd. has mainly been engaged in the R&D and production of pressure, level, temperature, differential pressure, digital display, weighing, and flow instruments.Main products include Swissmetallux ceramic piezoresistive sensors, independently developed ceramic capacitive pressure sensors. Diffused silicon, ceramic piezoresistive, strain gauge, metal capacitive, ceramic capacitive pressure transmitters remote pressure transmitters high-temperature pressure transmitters flush diaphragm pressure transmitters anti-corrosion pressure transmitters integrated/split level transmitters anti-corrosion level transmitters lightning-protected level transmitters high-temperature guided-pressure level transmitters rigid rod level transmitters flange level transmitters air pressure transmitters metal capacitive differential pressure transmitters diffused silicon differential pressure transmitters pressure controllers thermocouples/RTDs temperature transmitters ultrasonic level gauges

Precautions 1.All supplied products are provided with product certificates and instruction manuals, including product number, technical parameters, wiring, factory date, etc. Please carefully check them to avoid misuse.2.Wiring should be carried out strictly in accordance with our company's instructions for use.3.This product is a precision instrument. Random disassembly, collision, dropping, or probing the sensor with sharp tools is prohibited.4.The transmitter can work immediately after power-on, but the output becomes stable after preheating for 30 minutes.5.If any abnormality is found during use, the power supply should be turned off, use should be stopped, and inspection should be carried out, or directly contact our company's technical department.6.During transportation and storage, restore the original packaging and store it in a cool, dry, and ventilated warehouse.7.The quality warranty period is 12 months (damage caused by improper use such as pressure overload and wiring errors is not covered by the quality warranty).8.Special products are customized products, do not participate in 7-day no-reason return, customized products have a delivery period, no return and no exchange.