High Performance Ultrasonic Liquid Level Meter High Accuracy

Product Specification

Two-wire ultrasonic level meter is a commonly used liquid level measuring instrument. Its technical parameters may vary depending on the manufacturer and model, but generally include the following main aspects:

1. **Measurement range**
- The liquid level measurement range is usually **0.3~30 meters**, and the specific range depends on the model and application scenario.

2. **Blind zone**
- Usually **0.2~0.5 meters**, indicating the range that cannot be effectively measured near the probe.

3. **Accuracy**
- The measurement accuracy is generally **±0.5%~±1%** or higher, depending on the quality of the equipment and the calibration status.

4. **Resolution**
- Usually **1mm** or less, which determines the minimum change perception ability of the liquid level.

5. **Working voltage**
- Two-wire design, the power supply voltage is usually **DC 24V**, and the power supply and signal transmission share two wires.

6. **Output signal**
- Commonly **4~20mA** analog signal, which can be directly connected to the PLC or DCS system.
7. **Working environment temperature**
- -20°C ~ 60°C or wider temperature range, depending on the material and design.
8. **Protection level**
- Usually **IP65~IP68**, suitable for humid or dusty environments.

9. **Transmitting frequency**
- Usually **20~200kHz**, choose different frequencies to adapt to the type of liquid according to the application scenario.

10. **Installation method**
- Supports multiple installation methods such as thread, flange, wall hanging, etc. to meet the needs of different scenarios.

11. **Material**
- The probe and shell are mostly made of corrosion-resistant materials (such as polypropylene, PVDF, stainless steel), suitable for complex environments such as chemical industry and environmental protection.
12. **Measurement medium**
- Can be used for liquid media such as clean water, sewage, oil, etc. Some models support the measurement of powder or solid particles.

13. **Other parameters**
- **Response time**: Usually 1 second or shorter.
- **Anti-interference ability**: Enhanced design to adapt to complex electromagnetic environments.
- **Communication interface (optional)**: Some models support HART protocol or MODBUS communication.

If there is a specific model, you can further confirm the detailed parameters!

Advanced Two-Wire Design for Industrial Automation with Ultrasonic Liquid Level Meter

The two-wire ultrasonic level meter is an instrument used to measure the level of liquid or solid materials. It is usually used in industrial automation, material monitoring and environmental management. Its working principle is to use the time difference of ultrasonic wave propagation in the medium to determine the liquid level. The device calculates the height of the liquid or the accumulation height of the material by emitting ultrasonic signals and receiving reflected signals.

 
 Description

Ultrasonic liquid level gauge is a digital liquid level instrument controlled by a microprocessor. In the measurement, the ultrasonic pulse is emitted by the sensor (transducer). The sound wave is reflected by the liquid surface and is received by the same sensor or ultrasonic receiver. It is converted into an electrical signal through a piezoelectric crystal or magnetostrictive device, and is transmitted and received by the sound wave. time to calculate the distance from the sensor to the surface of the liquid being measured. Due to the non-contact measurement, the measured medium is almost unlimited and can be widely used to measure the height of various liquid and solid materials.

Multi-pulse low-voltage multi-point transmitting circuit, double-balanced noise suppression multi-point receiving circuit
It improves the reliability of the instrument, solves the problem of inaccurate measurement of uneven material levels, and greatly enhances the anti-interference ability, allowing it to work stably near the transmission tower of the substation.
Automatic power adjustment, gain control, temperature compensation.
Yingling's detection technology and rich software functions are suitable for various complex environments.
Waveform calculation technology improves the measurement accuracy of the instrument.
The interference echo suppression function ensures the authenticity of the measurement data.
16-bit D/A conversion improves the accuracy and resolution of current output.
The sensor is made of tetrafluoroethylene material and can be used in various corrosive situations.
Multiple output forms: programmable relay output, high-precision 4-20mA current output, Rs-485 digital communication output, split ultrasonic liquid level probe.
 

Specification

Main parameters of integrated ultrasonic liquid level meter​

Main parameters of corrosion-resistant sensor housing type split-type ultrasonic liquid level meter

Technical indicators

Installation principle
When the ultrasonic liquid level meter is working, high-frequency pulse sound waves are emitted by the transducer (probe) and are reflected by the surface of the measured object (water surface). The refracted reflected echo is received by the same transducer (probe) and converted into an electrical signal. . The time between pulse transmission and reception (the movement time of the sound wave) is proportional to the distance from the transducer to the object surface. The relationship between the sound wave transmission distance S, the sound speed C and the transmission time T can be expressed by the formula: S= CⅩT /2
When installing an ultrasonic liquid level meter, the blind zone problem of the ultrasonic liquid level meter must be considered. When the liquid level enters the blind zone, the ultrasonic transmitter cannot measure the liquid level. Therefore, when determining the measuring range of the ultrasonic liquid level meter, a margin of 50 cm must be left. When installing, the transmitter probe must be higher than the maximum liquid level. The position is about 50 centimeters. Only in this way can the accurate monitoring of the liquid level and the safety of the ultrasonic liquid level meter be ensured.
In actual use, due to poor installation considerations, the liquid level gauge was submerged in water, causing the liquid level gauge to be completely damaged.
Features of SGM ultrasonic level meter
Low price, small size and light weight, it can be used for non-contact level measurement of liquids and bulk solids in food, chemical, semiconductor and other industries, and can be used for remote level monitoring and pump control.
Attention should be paid to mechanical installation: the installation should be perpendicular to the surface of the object to be measured, avoid being used to measure foam objects, and avoid being installed at a distance less than the blind zone distance from the surface of the measured object (blind zone: each product will have a standard, which will be known with the product) , it should be considered that the beam avoids blocking materials and does not meet the filling mouth and container wall. When detecting large solid objects, the probe orientation should be adjusted to reduce measurement errors.

Catalog

Packing & Delivery


FAQ
1. Q: What information need to be provided to choose the suitable model?
A: Application field, Nominal pressure ,Medium & medium temperture , Power supply , Output,
Flow range, Accuracy, Connection and other parameters.
2. Q: Are you a trade company or a manufacturer?
A: We are an ISO approved manufacturer specialized in level and flow measuring instruments.
OEM & ODM service are available. Welcome to visit us in China.
3. Q: What is your MOQ?
A: To start our cooperation, sample order is acceptable.
4. Q: What is your delivery date for the Intelligent Mini Micro Turbine Fuel Oil Diesel Flow Meter?
A: The delivery date is about 3-15 working days after receipt of payment.
5. Q: What is your payment terms?
A: We support T/T, PayPal ,Western Union.
For mass production order, it is 30% deposit in advance and 70% balance before shipment.
6. Q: Do you have a warranty for the Flow Meter?
A: Yes, we have the warranty of 12 months.