The XDB502 liquid level sensor is a type of pressure sensor used for measuring liquid levels. It works on the principle that the static pressure of the liquid being measured is proportional to its height, and converts this pressure into an electrical signal using an isolated diffused silicon sensitive element. The signal is then temperature-compensated and linearly corrected to produce a standard electrical signal. The XDB502 liquid level sensor is commonly used in various industries, including petrochemicals, metallurgy, power generation, pharmaceuticals, water supply and drainage, and environmental protection systems.
Typical Applications
The XDB502 liquid level sensor is widely used for measuring and controlling liquid levels in rivers, underground water tables, reservoirs, water towers, and containers. The sensor measures the pressure of the liquid and converts it into a liquid level reading. It is available in two types: with or without display, and can be used for measuring various media. The sensor core typically uses diffused silicon pressure resistance, ceramic capacitance, or sapphire, and has the advantages of high measurement accuracy, compact structure, and good stability.
Choosing the XDB502 Liquid Level Sensor and Installation Requirements
When choosing the XDB502 liquid level sensor, it is essential to consider the application environment. For corrosive environments, it is necessary to choose a sensor with a high protection level and anti-corrosion features. It is also important to pay attention to the size of the sensor’s measuring range and the requirements of its interface. The XDB502 liquid level sensor is widely used in various industries, including water treatment plants, sewage treatment plants, urban water supply, high-rise water tanks, wells, mines, industrial water tanks, water tanks, oil tanks, hydrogeology, reservoirs, rivers, and oceans. The circuit uses anti-interference isolation amplification, anti-interference design (with strong anti-interference ability and lightning protection), over-voltage protection, current-limiting protection, shock resistance, and anti-corrosion design, and is widely recognized by manufacturers.
Installation Guidelines
When installing the XDB502 liquid level sensor, it is important to follow the following guidelines:
When transporting and storing the liquid level sensor, it should be kept in its original packaging and stored in a cool, dry, and ventilated warehouse.
If any abnormalities are found during use, the power should be turned off, and the sensor should be checked.
When connecting the power supply, strictly follow the wiring instructions.
The liquid level sensor should be installed in a static deep well or water pool. The steel pipe with an inner diameter of about Φ45mm (with several small holes at different heights to ensure smooth water flow) should be fixed in the water. Then, the XDB502 liquid level sensor can be placed in the steel pipe for use. The installation direction of the sensor should be vertical, and the installation position should be far from the liquid inlet and outlet and the mixer. In environments with significant vibration, steel wire can be wound around the sensor to reduce shock and prevent the cable from breaking. When measuring the liquid level of flowing or agitated liquids, a steel pipe with an inner diameter of about Φ45mm (with several small holes at different heights on the side opposite to the liquid flow) is usually used.
Solving Interference Problems
The XDB502 liquid level sensor has good stability and high accuracy, making it easy to install and use. However, it can be affected by many factors during daily use. To help users better use the XDB502 liquid level sensor, here are some solutions to interference problems:
Avoid direct pressure impact on the sensor probe when liquid flows down, or use other objects to block the pressure when liquid flows down.
Install a showerhead-style inlet to cut off the large water flow into small ones. It has a good effect.
Bend the inlet pipe slightly upward so that the water is thrown into the air before falling down, reducing direct impact and converting kinetic energy into potential energy.
Calibration
The XDB502 liquid level sensor is precisely calibrated for the specified range at the factory. If the medium density and other parameters meet the requirements on the nameplate, no adjustment is needed. However, if adjustment of the range or zero point is necessary, follow these steps:
Remove the protective cover and connect the standard 24VDC power supply and current meter for adjustment.
Adjust the zero point resistor to output a current of 4mA when there is no liquid in the sensor.
Add liquid to the sensor until it reaches the full range, adjust the full range resistor to output a current of 20mA.
Repeat the above steps two or three times until the signal is stable.
Verify the error of the XDB502 liquid level sensor by inputting signals of 25%, 50%, and 75%.
For non-water media, when calibrating with water, convert the water level to the actual pressure generated by the medium density used.
After calibration, tighten the protective cover.
The calibration period for the XDB502 liquid level sensor is once a year.
Conclusion
The XDB502 liquid level sensor is a reliable and widely used pressure sensor for measuring liquid levels in various industries. It is easy to install and use, and with proper installation and calibration, it can provide accurate and stable readings. By following the guidelines and solutions outlined in this article, users can ensure that the XDB502 liquid level sensor operates correctly and efficiently in their application environment.
Post time: May-08-2023