Optomax Industrial
Optical level switches operate on the principles of light refraction and reflection to detect the presence or absence of liquids. Compared to conventional mechanical switches, which are subject to wear and reduced reliability over time, this method offers a high level of accuracy.
Optical level switches provide consistent performance across a wide range of operating conditions, including extreme temperatures, high pressures and exposure to aggressive chemicals. This versatility makes them suitable for use in numerous industries, such as pharmaceuticals, food and beverage, and oil and gas.
Enclosure options
Suitable for both indoor and outdoor installation, the sensor housing is available in two chemically resistant materials: polysulfone, the standard choice for most applications, and Trogamid, which is typically used in the food and beverage industry.
Customised housing options are also available to suit your specific installation requirements.
Functionality
Optical level switches use an infrared LED and a phototransistor positioned precisely at the sensor tip. When the tip is in air, the infrared light is internally reflected within the tip and directed back to the phototransistor, creating strong optical coupling between the two components.
When the sensor tip is immersed in a liquid, the infrared light is refracted into the surrounding medium, reducing the amount of light reaching the phototransistor. This change in light intensity causes the sensor output to switch state, enabling reliable liquid level detection.
- Designed for industrial supply voltages and outputs
- Long service life
- Housing material: choice of polysulfone or Trogamid
- Ideal for switching higher currents (relays, solenoids, pumps, etc.)
- Standard and extended temperature ranges available
| Supply voltage (Vs) | 4.5VDC to 15.4VDC or 8VDC to 30VDC |
| Supply current (ls) | 2.5mA max. (Vs = 15.4VDC), 7.5mA max. (Vs = 30VDC) |
| Output Voltage (Vout) | 1A |
| Operating temperature | -25°C to +80°C, -40°C to +125°C |
| Storage temperature | -40°C to +85°C, -40°C to +125°C |
| Enclosure options | Fastening from the outside |
| Housing material | Polysulfones or Trogamid® |
| Connection | 20AWG, 250mm PVDF wires or 22AWG PVC cable |
| Ambient pressure | to 20 bar |
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