Campbell Scientific PWS100 Present Weather Sensor - Manual (Page 20)

Section 5. Specifications
5.3 Optical Specifications
5.3.1 Laser Head Specifications
Laser Source: Near-infrared (IR) diode, eye safe Class 1M
unit output
Peak Wavelength: 830 nm
Modulation Frequency: 96 kHz
Laser Head Lens Diameter: 50 mm (1.97 in)
5.3.2 Sensor Head Specifications
Receivers: Photodiode with band pass filters
Spectral Response: Maximum spectral sensitivity at 850 nm, 0.62
A/W (0.6 A/W at 830 nm)
Sensor Head Lens Diameter: 50 mm (1.97 in)
Lens Check Light Source: Near-IR LED
5.4 Environmental Specifications
Standard Operating
Temperature Range:
-25 ° to +50°C
Optional Extended Operating
Temperature Range:
-40 ° to +70°C
Relative Humidity Range: 0 to 100%
IP Rating: IP 66 (NEMA 4X)
5.5 CS215-PWS Specifications
Please refer to the CS215 manual or product brochure for the specifications.
5.6 Measurement Capabilities and Limitations
5.6.1 Visibility Measurements
Visibility Range: 0 to 20,000 m (0 to 65,620 ft)
Visibility Accuracy: ± 10% (0 to 10,000 m)
Measurement Interval: User selectable from 10 seconds to 2 hours
5-2