Level Transmitter

Overview

DWP-801 liquid level transmitter is developed by introducing the advanced diffused silicon pressure sensor and DWP Sensors circuit technology from NOVA Company of the United States. The high-quality static pressure liquid level measuring instrument has won the title of high-tech product. It is widely used in liquid level measurement in petroleum, chemical industry, metallurgy, environmental protection, food, water conservancy, urban water supply, oil field and other industries. The excellent quality of the DWP-801 liquid level transmitter meets the needs of my country's industrial automation and metering automation in some industries for high-precision liquid level detection instruments.

Features

1. Good stability, high precision, high performance/price ratio

2. Put directly into the measured medium, easy to install and use

3. Solid structure, no moving parts, high reliability, long service life

4. High-precision measurement can be carried out from water, oil to paste with high viscosity, and will not be affected by the foaming, deposition and electrical characteristics of the measured medium

5. No material fatigue wear, not sensitive to vibration and impact

6. With power reverse polarity protection and overload current limiting protection

Working principle

Measuring principle with static pressure

When the liquid level transmitter is put into a certain depth in the measured liquid, the pressure on the liquid surface of the sensor is P=ρ.g.H+PO;

P: The pressure on the liquid surface of the sensor Bit sheep: Pa

ρ: density of liquid to be measured, unit: kg/m³

g: local gravity acceleration, unit: m/s²

Po: Atmospheric pressure on the liquid surface, unit: Pa

H: Depth of liquid dropped by the sensor Unit: m

At the same time, the atmospheric pressure PO on the liquid surface is introduced into the back pressure chamber of the sensor through the air guide cable, and the PO on the liquid surface is sensed at a low level, so that the pressure measured by the sensor is:

P=0.gH Obviously, by measuring the pressure P, the liquid level depth H can be obtained, and the pressure signal sensed by the sensor is converted and amplified by the circuit, and then output as a standard signal after being compensated

Product model