Liquid level controls monitor the fluid level in tanks and similar applications. A liquid level controller opens a valve, activates a pump or sounds an alarm when fluid levels reach a critical point. These controllers keep tanks from running dry or overflowing.
Many liquid level controllers use probes that rely on the conductivity of the liquid to function. A liquid level control system can also use ultrasonic or radio wave technology to monitor fluid levels. Higher-end units provide the operator with extensive feedback regarding the tank's status. When purchasing liquid level controls, consider the following:
1. Prevent a tank from running dry or overflowing with a single-point liquid level control system.
2. Maintain fluid levels between two critical points with a dual-point liquid level control system.
3. Use liquid level controls with leak detectors.
4. Monitor fluid levels at all times with continuous liquid level controls.
Install single-point liquid level control systemsSingle-point liquid level control systems often use liquid level control switches to monitor a tank's fluid. This type of liquid level controller senses if the fluid reaches or falls below a specific point and triggers a valve or pump. Single-point liquid level controls can either prevent a tank from running dry or overflowing, but not both.
Use a two-point liquid level control systemTwo-point liquid level control systems prevent a tank from both overflowing and running dry. This type of liquid level control works by setting a probe at a low point and high point and cycling the liquid level control relay between the two probes. The control system makes the necessary adjustments to keep the liquid level between the two critical points.
Purchase liquid level control technology with leak detectionLiquid level controllers with leak detectors alert the operator that the tank or application is in need of repair. Liquid level control technology ranges from simple leak detectors placed outside a tank and sound an alarm if they get wet to advanced units that provide the operator with exact information about the leak.
Detect fluids with continuous liquid level controlsContinuous liquid level controls monitor the fluid's level at all times rather than when it reaches a critical point. Many continuous liquid level control systems have an external device that displays and records fluid levels. Like other liquid level controllers, continuous controllers activate a pump or a valve to adjust critical fluid levels.
- Industrial liquid level controls are available with stainless steel probes that resist corrosion and explosion-proof housing that protects the unit's electronic components.