还不具备经久耐用的精准传感能力。 A few years ago, ultrasonic level meters did not have the durability and precision sensing capabilities. Today, advances in science and technology have made this level of ultrasonic level gauges increasingly powerful. These new technologies make ultrasonic level meters
Easier to use, more flexible, and less expensive. Compared with the traditional ultrasonic sensor design, these new functions greatly expand its application scope.
Today, ultrasonic level gauges help mechanical designers find innovative solutions to reduce costs, improve quality control efficiency, and enhance inspection capabilities in a wide range of industries. And its application in the packaging field is getting deeper and deeper.
More comprehensive protection
Today, the ultrasonic level meter uses several advanced technologies to enable it to be used in areas where traditional equipment cannot work:
The ultrasonic level meter adopts protective covers of IP67 and IP69K, which can be detected in humid environments (such as bottle washer)
Built-in temperature compensation circuit can compensate for severe temperature changes that may occur during normal day and night shift operation;
The special coating on the sensor surface can prevent the erosion of harmful chemicals;
Advanced filter circuit makes the ultrasonic level meter not affected by factory environmental noise;
The new converter design greatly enhances its loss prevention performance and can be used in dirty environments.
More convenient to use
New generation of ultrasonic objects
The positioner is more convenient to use, and has the following characteristics: the button is designed on the sensor housing, and it is easier to set the distance sensing range; just place the target in front of the sensor and press the button; the sensor can automatically distinguish
Window size and target distance; easy to set up, the same ultrasonic level meter can be used in different environments.
DIP switch programming to customize a sensor for specific applications. Other programmable functions include: response time, output type, analog or discrete, and other special settings for level detection.
通常具有单个传感器所包含的多路输出。 Ultrasonic level meters usually have multiple outputs contained in a single sensor. A sensor can have two separate discrete outputs, so a sensor can detect two different distances. For others
For sensors, there are both discrete and analog outputs in the same sensor to achieve the purpose of both measurement and alarm output.
These functions make the ultrasonic level meter flexible and applicable, and can replace other sensor technologies. Because the ultrasonic level meter is easy to use and flexible, it can significantly improve production in the field of industrial automation.
Make great contributions to improving power and improving quality.
The use of ultrasonic level meter
There is a frequency converter in the ultrasonic sensor. When the converter element vibrates, the frequency converter will emit inaudible high-frequency sound waves in one direction. If the sound wave hits the object and is reflected back, the transducer can
Received an echo signal. The sensor determines the distance from the object based on the time from when the ultrasonic pulse is emitted to when the echo signal is returned. Usually, the sensor can set the distance range by the button. Sensor determination
Whether there are objects within the range of these settings.
For example, when an ultrasonic level meter installed on the top of a liquid tank or a pallet sends a sound wave to the inside of a container, the length of time the echo returns can indicate whether the container is full, empty, or half full.
Some ultrasonic level meters use a transmitter and a receiver converter. This bi-directional ultrasonic sensor is suitable for situations where edge detection or faster response times are required, or when used in humid environments.
Ultrasonic sensors should be the first choice when detecting transparent objects, liquids, dense materials and irregular objects on any surface (rough, smooth, shiny). However, the ultrasonic level meter is not suitable for high temperature environments or pressure tanks.
Can be used to detect large foam objects.
The following are important things to consider when applying an ultrasonic level meter:
Scope and size. The size of the object to be detected directly affects the maximum range of the ultrasonic sensor. The sensor must detect a certain level of sound before it can output. Large parts can reflect most of the sound to the ultrasonic sensor
Sensor so that the sensor can detect this part at its longest sensing distance. Small parts can only reflect a small part of the sound, which results in a greatly reduced sensing range.
The object to be detected. The ideal object for ultrasonic detection should be large, flat and dense, and perpendicular to the front of the transducer. The most difficult objects to detect are those that are small and made of sound-absorbing materials such as foam rubber.
Or an object at a certain angle to the converter. You can detect some difficult objects by having the sensor detect the background surface and then react to the detection target object between the sensor and the background.
If the liquid surface is stationary and perpendicular to the sensor surface, detecting the liquid is easy. If the liquid level fluctuates greatly, the response time of the sensor can be extended, so as to take the average of the fluctuation changes to obtain a more consistent reading. but,
Ultrasonic level gauges are not yet able to accurately detect foamy liquids on the surface, because foam can deflect the direction of sound propagation.
You can use the inverse ultrasonic mode of the ultrasonic level meter to detect irregularly shaped objects. In reverse ultrasound mode, the ultrasound sensor detects a flat background, such as a wall. Anything between the sensor and the wall
Objects will block sound waves. The sensor can recognize the existence of the object by detecting the interference.
vibration. Both the vibration of the sensor itself and the vibration of nearby machines may affect the accuracy of the distance measurement. A rubber anti-vibration device can be used when installing the ultrasonic level meter to reduce such problems. sometimes
Rails can also be used to eliminate or greatly reduce component vibration.
attenuation. The sensor is also designed with a temperature compensation function to regulate the slowly changing ambient temperature. However, it cannot regulate temperature gradients or rapid changes in ambient temperature.
Mistested results. Nearby objects (such as guide rails or fixing rods) may reflect sound waves. To accurately detect a target object, the effects of nearby sound reflecting surfaces must be reduced or eliminated. To avoid misdetecting nearby objects,
都装有LED 指示，用于在安装时指示操作人员，以确保正确安装传感器并降低误测风险。 Ultrasonic level meters are equipped with LED indications to instruct the operator during installation to ensure proper sensor installation and reduce the risk of false measurements.
In the past, it was difficult and expensive to use ultrasonic sensors in some areas. Now, due to the reduced cost and ease of use, mechanical designers have gradually started using ultrasonic sensors in these areas. In industrial applications,
Ultrasonic level meter can be used to detect liquid level, detect transparent objects and materials, control tension and measure distance. Industries that use ultrasonic level gauges include packaging, bottling, material handling, and the automotive industry. Here are some uses
Example of way:
For testing bottles in bottling plants;
Used in food processing plants to detect and control liquid levels in tanks;
Control the material transfer speed by monitoring the tension between the two rollers on the packaging line;
Detecting pins on a car engine block.
Today, the industrial use of ultrasonic sensors is rapidly expanding. This once costly but unreliable technology is now easy to use and inexpensive. Ultrasound sensors are now routinely used for process monitoring to improve products
Quality, detection of defects, determination of presence and more. These sensors also increase productivity by reducing waste products from damaged components and the resulting downtime. The technology also follows this approach
Continue to develop new products.
At present, how to make all industries realize the application potential of ultrasonic sensors in various fields of manufacturing is a major challenge we face, including in quality control, process control and inspection.