With a huge number of different ways to monitor levels needed by industry, a range of different level measurement devices and sensors are available to suit different applications. Thus, selecting the right level measurement device for your needs is easy, if you know what you are looking for. The level-measurement instruments available today can include configuration and diagnostic system as well as just monitoring the level of a liquid. They can also process and communicate the data they obtain over a network for control and monitoring applications.
The PID or proportional integral derivative sensor is one model of sensor that is commonly used in liquid-level measurement. Different methods for liquid level measurement include.
• Conductance (conductivity)
• Hydrostatic tank/head gauging
• RF capacitance
Prior to selecting a device for your application, you must initially understand the working of each device as well as the theory behind it.
Things to know about interface level measurement devices
Interface level measurement devices include meters and sensors that can measure and detect levels between different media like water/oil and solid/liquid. There are some interface level measurement devices that can also measure the interface between a settled bed of solids and a liquid.
Sometimes, interface level measurement equipment is also referred to as water oil analysers, oil water analysers, oil level measurement equipment or liquid solid analysers, depending on the application. A vibrating probe extending through a wall of a vessel or tank to detect the level of the interface materials is one type of interface level measurement device.
Hydrostatic ‘screw-in’ level transmitters, hydrostatic ‘submersible’ level transmitters, radar level transmitters and TDR level transmitters are some of the options you can choose from.