The ultrasonic level meteris an intelligent non-contact liquid (or solid) level measurement instrument. It consists of an ultrasonic probe and an ultrasonic control host. This product adopts a modular circuit design, featuring military-grade multi-layer PCB boards, with a compact hardware structure and a reasonable layout. This product uses a 16-key operation menu, supports isolated 4-20mA output, supports HART communication, and has built-in wireless data transmission functions such as GPRS/GPS/4G. The body is equipped with 500,000 storage slots, supports USB storage export, and can also add modules according to customer requirements to achieve other functions.

This product can meet most liquid level and material level measurement requirements without contacting the industrial medium, completely solving the shortcomings of traditional measurement methods such as winding, clogging, leakage, medium corrosion, and inconvenient maintenance. Therefore, it can be widely applied in various fields related to material level and liquid level monitoring and control.

Functional Features
The ultrasonic non-contact liquid level meter measures the liquid level without any impact on the measured liquid. The liquid level measurement is accurate and it is an ideal liquid

level instrument.
The probe has low power consumption, is easy to install and locate. It is widely used in various media liquid level measurement in systems and industries such as petrochemicals, metallurgy, power, pharmaceuticals, water supply and drainage, and environmental protection.

The ultrasonic liquid level meter has a historical record function, which can record historical data for hours, days, months, and years. The body has 500,000 storage slots. The instrument control function is comprehensive, with four-channel relay signal output. It is easy to connect common actuators (electromagnets, pumps, alarms, etc.). According to the requirements of the working conditions, the probe can be selected in various models such as the delicate type (IP65), enhanced type (IP68 moisture-proof), and anti-corrosion type (Teflon). The display can be switched between Chinese and English, and the operation is via 16-bit keys. The simple menu options enable quick human-machine communication. A remote transmission communication module can be integrated, and various communication protocols can be customized (explained during ordering).

Measurement principle
The ultrasonic liquid level meter measures the liquid level by utilizing the characteristics of ultrasonic wave emission and reflection. The probe emits ultrasonic pulse signals to the surface of the measured medium, and when they encounter the measured medium (liquid surface), they are reflected. The reflected ultrasonic wave signals are detected by the electronic module, processed by the processor, and the time difference between the emitted ultrasonic wave and the echo is analyzed. Combined with the propagation speed of ultrasonic waves, the distance traveled by the ultrasonic waves can be calculated, thereby reflecting the liquid level situation.

Product Introduction
The immersion type liquid level gauge is based on the principle of static pressure measurement. Its core consists of a high-precision pressure sensor and an intelligent signal processing module. It needs to be placed at the bottom of the measured liquid. By sensing the changes in the static pressure of the liquid and combining the built-in medium density compensation algorithm, it automatically calculates and outputs the liquid level height data. It is suitable for various media such as water, oil, and chemical solutions, and is widely used in water tanks, storage tanks, water wells, sewage treatment ponds, etc. It can meet the liquid level measurement requirements in industrial production, municipal water supply, environmental monitoring and other fields.

Product Features
· Powerful intelligent function: Equipped with automatic temperature compensation and zero drift correction functions, it can real-time calibrate measurement data to avoid the influence of environmental factors on accuracy; supports data storage and retroactive viewing, capable of recording historical liquid level changes. Some models can also be connected to the Internet system through the RS485 communication interface to achieve remote monitoring and parameter setting.
· High measurement accuracy: Utilizes high-precision pressure sensors, with measurement error controlled within ±0.2% FS. Combined with advanced signal processing technology, it can maintain stable measurement results even in liquid fluctuations and conditions with a small amount of impurities.
· Convenient installation and maintenance: No complex on-site debugging required. The immersion design allows it to be directly placed in the measured liquid, and the cable length can be flexibly customized. The sensor housing is made of corrosion-resistant 316L stainless steel or polytetrafluoroethylene material, with a long service life. Daily maintenance only requires regular inspection of the cable sealing performance, and the cost is low.
· Strong environmental adaptability: Can withstand a temperature range of -40℃ to 80℃ and a pressure range of 0.1 to 10MPa. The waterproof rating reaches IP68, and it can work stably in humid, dusty, and even short-term immersion harsh environments, suitable for various complex industrial scenarios.

Technical Specifications
Pressure type: Gauge liquid level Measurement range: 0 - 0.5 meters... 200m
Accuracy grade: 0.25% F.S grade
Output and power supply: The output forms include various current, voltage outputs and display types. The power supply voltage range varies depending on the output form. It is recommended to use a 24VDC power supply.
Stability: ≤ 0.5% / year
Load resistance: ≤ (U - 12) / 0.02Ω
Response time: ≤ 10ms Medium temperature: 0℃ - 80℃ Liquid medium

The 80GHz radar level measurement product series refers to the frequency-modulated continuous wave (FMCW) radar products operating in the frequency range of 76-81GHz, supporting four-wire and two-wire applications. The products come in multiple models and have a range of up to 120m.
The main advantages of the products are as follows:
■ Based on the self-developed CMOS millimeter-wave RF chip, it realizes a more compact RF architecture, higher signal-to-noise ratio, and smaller blind zone.
It is not affected by steam and dust attenuation of radar echoes; it can still achieve stable measurement for substances with very weak reflection characteristics or low dielectric constant.
■ With a 5GHz working bandwidth, the product has higher measurement resolution and accuracy.
■ The smallest 3° antenna beam angle, the interference in the installation environment has less impact on the instrument, making installation more convenient and more suitable for stirring conditions.
■ The shorter wavelength has better reflection characteristics on solid surfaces, greatly reducing the dependence on universal flanges.
■ Supports remote debugging and remote upgrading, reducing waiting time and improving work efficiency.
■ Supports mobile phone Bluetooth debugging, facilitating on-site personnel maintenance.