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Optoelectronic Level Switch - OLS-C51
Brand: WIKA Instruments Ltd.The model OLS-C51 optoelectronic level switch is used for monitoring the level of liquids. The optoelectronic sensor consists of an infrared LED and a light receptor.
The light from the LED is directed at a prism which forms the tip of the sensor. So long as the tip is not immersed in liquid, the light is reflected within the prism to the receiver.
Features- Application at medium temperatures up to +135° C
- Mounting position as required
- Accuracy ±2 mm
- Explosion-protected version Ex i
Specifications
Measurement Accuracy
- ±2 mm
Minimum Distance from the Glass Tip to An Opposite Surface
- ≥ 10 mm (≥ 20 mm with Polished Surfaces)
Process Connection
- G 1/2" Male
Responsiveness
- Preset for the Detection of Aqueous Media and Oils
Medium Temperature
- -30 to 135° C
Ambient Temperature
- -30 to 80° C
Operating Pressure
- 40 bar (4.0 MPa)
Material of Construction
- Case: Stainless Steel 1.4305 (Non-wetted Parts)
- Process Connection: Stainless Steel 1.4571
- Light Guide: Borosilicate Glass, Fixed with Epoxy Resin
Power Supply
- 7.5-30 Vdc
Output
- “Open”: ≥ 12 to 18 mA
- “Closed”: ≥ 4 mA to 20 mA
- Fault: Less Than 4 mA, > 20 mA
- 4-20 mA, Protected Against Reverse Polarity
Electrical Connection
- Diameter: 2 x 0.5 mm2
- Cable length freely definable
- PUR cable halogen-free
Output Function
- NO (Closed in Medium)
- NC (Open in Medium)
Ingress Protection
- IP65
Number of Switch Points
- 1
Certifications & Approvals
- CE
- RoHS
- IEC
- ATEX
- EMC
- IECEx