Input type liquid level gauge

Input type liquid level transmitter
Introduction:
Input type liquid level transmitter is based on the principle that the measured liquid static pressure is proportional to the height of the liquid. It uses the piezoresistive effect of diffused silicon or ceramic sensitive elements to convert static pressure into electrical signals. After temperature compensation and linear correction. Convert to 4-20mADC standard current signal output. The sensor part of the immersion type liquid level transmitter can be directly immersed in the liquid, and the transmitter part can be fixed with flanges or brackets, making installation and use extremely convenient.

Features:
Good stability and high accuracy
The immersion type liquid level transmitter is directly inserted into the measured medium, making installation and use quite convenient.
Solid state structure, no movable parts, high reliability, long service life. High precision measurement can be carried out from water and oil to viscous paste, without being affected by the foaming, deposition, and electrical characteristics of the measured medium. Wide range temperature compensation. The input type liquid level transmitter has power reverse polarity protection and overload current limiting protection.
Working Principle:
Principle of static pressure measurement:
When the liquid level transmitter is inserted into a certain depth of the measured liquid, the pressure formula on the sensor facing the liquid level is: Ρ=ρ. g.H+Po

In the formula: P: pressure exerted by the transmitter on the liquid surface ρ: density of the measured liquid g: local gravity acceleration Po: atmospheric pressure on the liquid surface H: depth of liquid input by the transmitter

At the same time, the pressure of the liquid is introduced into the positive pressure chamber of the sensor through gas guiding stainless steel, and the atmospheric pressure Po on the liquid surface 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 depth of the liquid level can be obtained

Main technical indicators:
Measurement range: 0.3-110m
Accuracy: 0.2, 0.5, 1.0 levels
Working temperature: -20~80 ℃
Output signal: 2-wire 4-20mADC
Power supply voltage: standard 24VDC (12-36VDC)
Non sensitive area: ≤± 1.0% FS
Load capacity: 0-600 Ω
Relative temperature: ≤ 85%
Protection level: IP68
Explosion proof mark: Exia Ⅱ CT4-7