When your application demands quick, reliable detection of liquid or solid levels at specific points, ultrasonic level sensors provide a cost-effective solution. Filpro Sensors Pvt Ltd offers a diverse range of ultrasonic level sensors tailored for tank-level switches, overflow alarms, and pump control in industries ranging from oil and gas to agriculture. An ultrasonic level sensor operates by emitting a short burst of high-frequency sound and waiting for the reflected echo. If the echo returns within a predefined time threshold, the device outputs a switching signal indicating the presence or absence of liquid at that level.
Compared to float-based devices, ultrasonic level sensors require no moving parts at the sensing surface, which drastically reduces mechanical wear or fouling issues. For instance, in oil storage tanks where sludge can accumulate near the bottom, a float might stick or give erratic readings. An ultrasonic level sensor mounted above the sludge simply “sees” the surface without getting obstructed. Filpro Sensors Pvt Ltd’s ultrasonic level sensors feature narrow beam angles for applications with constrained mounting points, as well as wide coverage transducers suitable for open channels or large bins of granulated material.
One of the primary advantages of ultrasonic level sensors is their flexibility in mounting orientation. While most sensors are designed for vertical installations pointing straight down, Filpro Sensors Pvt Ltd also offers side-mounted versions that can be affixed horizontally on pipe walls or duct flanges. This makes them a practical option for applications where top-mounting isn’t feasible due to structural limitations or hygiene requirements. With rugged IP68-rated housings, these sensors can operate reliably in washdown environments, dairy processing areas, and outdoor locations exposed to rain, dust, or UV radiation.
Settings for hysteresis, response time, and switching mode can be easily configured using the onboard buttons or an optional handheld configurator. For example, if you need a delayed pump-off signal to prevent short-cycling, the delay timer can be programmed directly on the ultrasonic level sensor. Filpro Sensors Pvt Ltd also offers models with dual-switch outputs, allowing both high-level and low-level alarms from a single device. In critical applications—such as preventing overflow in chemical dosing tanks—this dual functionality simplifies wiring and reduces panel space requirements.
Another key consideration is the type of material being detected. While water and most common liquids reflect ultrasound well, highly viscous or foamy fluids can absorb or scatter sound waves. Filpro Sensors Pvt Ltd addresses this by offering transducers with optimized frequency ranges—for example, 80 kHz units for clear water and 200 kHz units for viscous or foamy substances. For solid materials like grains or plastic pellets, the company recommends angled transducers that improve coupling of the ultrasonic pulse to particulate surfaces, ensuring a reliable detection even when the pile slope varies.
Finally, for applications where integration with PLCs or SCADA systems is paramount, Filpro Sensors Pvt Ltd’s ultrasonic level sensors provide 12–24 V DC supply options along with NPN/PNP transistor outputs or configurable relay outputs. This versatility ensures seamless interfacing with existing control architectures. Whether you need a standalone level switch for a sump pump or a networked sensor for remote monitoring, their ultrasonic level sensors deliver the performance and durability you require—giving you confidence in critical on/off level control without the headaches of frequent maintenance.