Images are representations only.
Optoelectronic Level Switch - OLS-S, OLS-H
Brand: WIKA Alexander Wiegand SE & Co. KGThe model OLS optoelectronic level switch is used for the detection of limit levels in liquids. This is widely independent of physical characteristics such as refractive index, colour, density, dielectric constant and conductivity. Measurement is also done in small volumes.
The switches consist of an infrared LED and a phototransistor. The light of the LED is directed into a prism. So long as the sensor tip of the prism is in the gas phase, the light is reflected within the prism to the receiver. When the liquid in the vessel rises and wets approximately 2/3 of the glass tip, the infrared lightbeam into the liquid is interrupted and only a small portion reaches the receiver. This difference is evaluated by the electronics and triggers a switching operation.
Features- Temperature ranges from -269 … +400 °C.
- Versions for pressure ranges from vacuum to 500 bar.
- Special versions: High pressure, interface measurement.
- Explosion-protected versions.
- Signal processing is made using a separate model OSA-S.
Specifications
Certifications & Approvals
- EAC
- CE
Environmental Protection
- IP65
- IP66
- IP20
Material of Construction
- Process Connection: Stainless Steel 1.4571
- Case: Stainless Steel 1.4301
- Hastelloy optional
Process Connection
- G 1/2” A, 1/2” NPT
- Flange 1/2” to 2”, Class 150 toClass 2500, RF, RTJ, FF
Pressure Range
- 0 to 500 bar
- Chemical, petrochemical, natural gas, offshore industries
- Shipbuilding, machine building, refrigerator units
- Power generating equipment, power plants
- Process and drinking water treatment
- Wastewater and environmental engineering
