Description
Operating Principle
The upper flange is in communication with the gas phase space of the container, while the lower flange is in communication with the liquid phase space. When the liquid level rises, the pressure on the lower flange increases, creating a pressure difference with the upper flange. This pressure difference is proportional to the liquid level height and is converted into a liquid level signal by the transmitter.
Structural Features
It adopts a diaphragm structure, ensuring that the medium does not directly contact the transmitter. It is suitable for high-temperature, high-pressure and highly corrosive media. The measurement accuracy can reach ±0.1% to ±0.2%, with strong anti-interference ability and convenient maintenance.
Application
It is widely used in cargo compartments of ships, oil, chemical, power and other industries for water ingress alarm systems, as well as for liquid level measurement, control and monitoring of sealed containers such as water tanks, pools and storage tanks, such as fire water tanks and water level gauges in pools.
Installation Notes
1. Diaphragm Protection
When installing and tightening the bolts, it is strictly prohibited to press the diaphragm with the gasket. This will prevent the diaphragm from being scratched or deformed. Otherwise, it will seriously affect the measurement accuracy and even damage the instrument.
2. Installation Environment
The transmitter should be installed in a location that is well-ventilated, dry, free from corrosion, with minimal vibration and small temperature fluctuations. For outdoor installation, a protective cover should be added to prevent direct sunlight and rain exposure.
3. Medium and Temperature
The measured medium must not freeze; otherwise, it will damage the diaphragm. For high-temperature media, they should be cooled through the pressure guiding tube or cooling device to a temperature range within the allowable range of the transmitter.
4. Explosion-proof and Protection
The installation of explosion-proof transmitters must comply with explosion-proof regulations; when installed outdoors, the display head of the transmitter should be placed inside an insulated protection box to meet the protection level and temperature requirements.
5. Maintenance and Calibration
Regularly inspect the seals, clean the pressure interfaces and pressure ports. After long-term use, it is recommended to send the instrument to the metrology department for calibration. Non-professionals are not allowed to disassemble the transmitter at will.
