level liquid sensor

1.Product principle of level liquid sensor

level liquid sensor can accurately measure the amount of liquid in a tank and is an important sensor for measuring and monitoring the level in storage tanks, containers and other containers.Radar level gauges use Frequency Modulated Continuous Wave (FMCW) technology.The antenna emits a high-frequency FM radar signal, and the frequency of the radar signal increases linearly.The emitted radar signal is received by the same antenna after being reflected by the measured medium.At the same time, the frequency difference between the transmit signal frequency and the received signal frequency is proportional to the measured distance.The collected frequency difference signal is subjected to fast Fourier transform (FFT) to obtain the spectrum of the reflected echo, and the distance of the target to be measured is calculated based on this.

2.Technical parameters of level liquid sensor

Measuring medium: highly corrosive or non-corrosive liquid, steam, foam

Measuring range: 0.1m～10m  

Process connection: flange ≥ DN50

Process temperature: -40～130℃

Process pressure: -0.1～2.5MPa

Antenna size: 42mm lens antenna (determined according to flange size)

Antenna material: PTFE

Accuracy: ±2mm (measuring range below 35m) ±5mm (measuring range between 35m-100m)

Protection level: IP67

Center frequency: 80GHz

Launch angle: 6°

Power supply: two-wire system/DC24V

Four-wire system/DC12~24V

Four-wire system/AC220V

Housing: aluminum/stainless steel

Signal output: two-wire system/4...20mA/HART protocol

Four-wire 4...20mA/ RS485 Modbus

3.Product features of level liquid sensor

The antenna is small in size and easy to install; the non-contact radar has no wear and pollution.

Almost unaffected by corrosion and foam; almost unaffected by water vapor, temperature and pressure changes in the atmosphere.

Serious dust environment has little impact on the work of high-frequency level meters.

The wavelength is shorter and reflects better on tilted solid surfaces.

The beam angle is small and the energy is concentrated, which enhances the echo capability and helps avoid interference.

The measurement blind area is smaller, and good results can be achieved for small tank measurements.

High signal-to-noise ratio for better performance even under fluctuating conditions.

High frequency, it is the best choice for measuring solids and low dielectric constant media.