Miniature Liquid Level Switches – SST Optomax Digital Range
Equipped with protection against reverse polarity, electrostatic discharge (ESD), and transient over-voltage.
Operates across a broad supply voltage range.
Features a push-pull output capable of sourcing or sinking up to 100mA, suitable for driving small loads directly.
Industrial Liquid Level Switch – SST Optomax Industrial Range
Designed with protection against reverse polarity, electrostatic discharge (ESD), transient over-voltage, and short circuits.
Compatible with a wide range of supply voltages.
Offers N and P-type output configurations, capable of sourcing or sinking up to 200mA, ideal for directly driving small loads.
Harsh Environment Liquid Level Switch – SST Optomax Industrial Glass
Incorporates protection against reverse polarity, electrostatic discharge (ESD), transient over-voltage, and short circuits.
Supports a broad range of supply voltages.
Provides N and P-type output configurations, with the ability to sink or source up to 200mA, making it suitable for directly driving small loads.
Cost-Effective Liquid Level Switch for OEM – SST Optomax Basic
Optical solution exclusively provided.
The customer is accountable for integrating the sensor into their application.
Available in 3-wire (common cathode/emitter) and 4-wire (galvanically isolated) configurations.
High Performance Liquid Level Switch – SST LLHP-Range
Engineered for applications that demand a durable metal housing and larger threads for external mounting.
Features protection against reverse polarity, electrostatic discharge (ESD), and transient over-voltage.
Supports a wide range of supply voltages.
Rugged Heavy Duty Liquid Level Switch – SST LLHT Series Glass Tip
Tailored for applications that demand a sturdy metal housing and support for a broad operating temperature range.
Includes protection against reverse polarity, electrostatic discharge (ESD), transient over-voltage, and short circuits.
Compatible with a wide range of supply voltages.
Hazardous Area Approved Liquid Level Switch
Certified for ATEX, UKCA, and IECEx standards.
Supports ambient and liquid temperatures ranging from –30°C to +80°C (–22°F to +176°F).
No calibration required
FAQ’S
What is an optical level sensor?
Optical level sensors detect liquid presence or absence by utilizing the optical properties of liquids. A range of process connections, materials, housing designs, outputs, and electrical connections ensures they meet diverse requirements.
How do these sensors function?
In air, infrared light within the sensor tip reflects back to the detector. In liquid, the light refracts out of the sensor tip, reducing energy reaching the detector.
How accurate are SST liquid level sensors?
Optical level switches ensure precise liquid level monitoring with consistent long-lasting switching and control. They detect as little as 1mm of liquid contact or absence, enabling rapid and accurate control.
How versatile are optical level switches?
Optical sensors are highly adaptable, compatible with a variety of liquids, from clear, clean liquids to those containing suspended particles or bubbles. They are used across industries such as pharmaceuticals and food and beverage production.
Can optical level switches operate in explosive atmospheres?
Yes, we provide a selection of Intrinsically Safe level sensors designed for use with potentially hazardous liquids.
What is the response time of optical sensors?
Optical sensors deliver sub-second response times, offering real-time liquid level data for swift process control. Optional firmware handles sloshing liquids and minimizes false readings, making them ideal for dynamic environments.
What maintenance advantages do optical sensors have over other types?
With no moving parts or mechanical adjustments required, optical sensors are low-maintenance, providing dependable long-term performance with minimal upkeep.
Are the sensors easy to install?
Optical level switches are straightforward to install and integrate into existing systems. They can be mounted either internally or externally without requiring significant modifications to the container.
What is the fluid compatibility range of optical level sensors?
Optical level sensors are available in various housings, making them suitable for most acidic, alkaline, hydrocarbon, or plant-based oils. They are also approved for use with drinking water and pharmacopeia standards, serving numerous industries.
Do these sensors support remote monitoring?
Optical sensors seamlessly integrate with remote monitoring and control systems, allowing operators to access liquid level data remotely, improving both efficiency and safety.
Why chose SST Sensing?
Optical Liquid Level Switches
SST Sensing’s optical liquid level switches are solid-state, eliminating unreliable moving parts for enhanced durability. Compact and precise, they protrude minimally into applications and can detect even small amounts of liquid, offering reliable performance across varied environments.
These sensors exhibit low sensitivity to ambient light and are unaffected by foam in air or small bubbles in liquid. They are engineered to operate in wide temperature ranges and withstand harsh liquid media, ensuring robust, long-lasting functionality even in challenging conditions.
If our standard switches don’t meet your needs, we provide customization options for housings, cabling, and connectors to suit your specific applications. Additionally, bespoke features such as PWM outputs or insensitivity to moving liquids can be integrated, delivering a solution tailored to your unique requirements.