Level controllers are automated units for measuring the level of fluid in a contained area. They're used in systems that prevent liquid levels becoming excessively high or low.
How do level controllers work?
Firstly, a sensor detects the fluid level in either a container or a natural setting, such as a lake. It then sends a signal – normally either pneumatic or electrical – to a control valve, solenoid, or other external control device. If the fluid level needs to be adjusted, the control valve will open or close according to the information it has received.
Types of level controllers
The two main types of level controllers are pneumatic and electric. Your choice of controller will depend on factors such as the type and density of fluid being measured, as well as the pressure of the container.
Pneumatic level controllers are preferred when the material is hazardous, or electricity is unavailable.
Electric level controllers are useful in pressurised tanks and are generally very accurate and reliable.
Level controllers measure either exact volumes or when fluid drops above or below a fixed point.
Description:
The Omron compact, intelligent airflow sensor features MEMS
technology for precision mass airflow measurement up to 50L/min. It has a power supply ranging between 10.8VDC and 26.4VDC. This sensor has a 3-pin electrical connection. Case material - Thermoplastic resinStable output ...
Description:
A series of liquid level control relays from
ABB for conductive liquids. The CM-ENS range gives a choice of 3 variants each with a compact, space saving housing with the highest fire protection and environmentally friendly materials. Installation is quick ...
Description:
The K7L-AT50 liquid leakage sensor amplifier by Omron
can detect a wide variety of liquids ranging from water to chemicals with low conductivity. It internally oscillates AC signals provided to the Sensing Band, protecting it from electric corrosion and ensuring ...
Description:
The Carlo Gavazzi CLD2EB1BU24 is a μ-Processor based
level controller for liquids with a wide sensitivity range from 250 O to 500KO and the sensitivity is adjustable by means of the potentiometer. For filling or emptying applicationsLow-voltage AC electrodesEasy installation ...