Digital display liquid level gauge based on the principle of hydrostatic pressure made of stainless steel transmitter and the media contact with the thread or flange fixed to the top of the measured container, easy to use, widely used in petroleum, chemical, metallurgy, environmental protection, Food, water, city water supply, oil field, etc. The excellent quality of the liquid level gauge meets the demand of high precision liquid level detection in industrial automation and metering automation of some industries in China.It is suitable for water, oil, Food - Measurement of the level of medicine

First, the characteristics
Stability, high precision, high performance / price ratio
Directly into the measured medium, the installation is quite easy to use
Solid structure, no moving parts, high reliability, long service life
From the water, oil to the viscosity of the paste can be high-precision measurement, not from the measured medium foaming, deposition, the impact of electrical characteristics
No material fatigue wear, vibration, shock insensitive
Wide range of temperature compensation
With power reverse polarity protection and overload current limit protection

Second, the working principle
Using the principle of static pressure measurement
When the liquid level transmitter into the measured liquid in a certain depth, the sensor surface pressure is:
In the formula:
P: pressure on the sensor facing the liquid surface, unit: Pa
P: measured liquid density, unit: kg / m3
G: the local acceleration of gravity, unit: m / s2
P ·: Atmospheric pressure on the surface, in Pa
H: the depth of the sensor into the liquid, in m
At the same time, the atmospheric pressure P · on the liquid surface is introduced into the back-pressure chamber of the sensor through the gas-conducting cable to cancel the P · of the sensor's liquid level, so that the pressure measured by the sensor is: P = p.g.H
Obviously, by measuring the pressure P, can be obtained by the depth of the liquid level H. The pressure sensor signal is amplified by the circuit conversion, compensation, AD conversion, after treatment shows the measured level level.

Third, the main technical parameters

Range; rod 0 ~ 2000mm
Bottom mounted; 0 ~ 20m
H-100CD self-powered; high-capacity rechargeable lithium battery
H-100ED external power supply; 9 ~ 24VDC
Process connection; Flange; Quick assembly; Thread
Optional output; 4-20mA. 0-10mA

Products:

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