Vaisala Ceilometer CL31

Second generation of advanced single lens optics provides excellent performance also at low altitudes
Reliable operation in all weather: unsurpassed performance in vertical visibility and cloud detection during precipitation
Fast measurement enables detection of thin cloud layers below a solid cloud base
Modular design for easy installation and maintenance
Extensive self-diagnostics with fault analysis
Approved and deployed by the US-FAA
Selected by the National Weather Service of USA

Performance
	Measurement range Reporting resolution Measurement cycle	0...25,000 ft ((0...7.5 km) 5 m /10 ft (units selectable) programmable, 2...120 s
Reported quantities
	Cloud hits (up to 3 layers) and status information Cloud hits, status and backscatter profile
Operating environment
	Temperature Relative humidity Wind	-40...+60 °C (-40...+140 °F) 0...100 %RH 55 m/s
Inputs and outputs
	Operating voltage Power consumption Outputs	100/115/230 VAC max. 310 W including heating RS-232/RS-485/Modem ITU-T V.21, V.22, V22bis
Mechanics
	Dimensions: Total Measurement unit Weight: Total Measurement unit Housing classification	1190 x 335 x 325 mm 620 x 235 x 200 mm 31 kg 12 kg IP65 (NEMA 4)

For complete specifications, please see the brochure in "Product Documentation".

Typical delivery times

Spare parts
	Common spare and wearing parts are available. For availability contact sales.
Repair
	Repair services are available at Vaisala service centers for a fixed price. Repair price includes: -repair work -required parts -calibration certificate -service report
Technical support
	Technical support for your installed units, contact helpdesk@vaisala.com.