CL31 VAISALA | Alldatasheet

Document overview

  • Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
  • PDF pages: 2

Technical content

Features

  • Measurement range from 0 to 7.6 km (from 0 to 25 000 feet)
  • Modular design for easy installation and maintenance
  • Second-generation, advanced single-lens optics provides excellent performance also at low altitudes
  • Fast measurement enables detection of thin cloud layers below a solid cloud base
  • Reliable operation in all weather; unsurpassed performance in vertical visibility and cloud detection during precipitation
  • Latest technology from the world- leading manufacturer - based on the experience from more than 5000 installed Vaisala ceilometers worldwide
  • Extensive self-diagnostics with fault analysis Measurement starts from ground level The enhanced single-lens technology applied in CL31 ensures excellent performance starting at a height of virtually zero. This is due to the strong and stable signal over the whole measurement range. The single-lens technology provides unsurpassed reliability during precipitation, low clouds and ground based obscurations, which are the most critical phenomena in aviation safety. Fast measurement Fast measurement helps to detect thin cloud patches below a solid cloud base. CL31 provides a full backscatter profile for data visualization and research purpose. The CL31 beam can be directed either vertically or tilted. The tilting option together with the novel optics design provides enhanced performance during precipitation by improving the protection given by the shield. In the measurement unit, a tilt angle sensor automatically corrects the measured cloud distance reading to vertical cloud base height. Extensive self-diagnostics CL31 is fully automatic. In addition to cloud height data, the messages contain instrument status information based on comprehensive self-diagnostic routines. In case of malfunction, the diagnostics help users to identify the failed module. CL31 features practical modularity and its easy-access door ensures fast servicing and high data availability. Easy installation and maintenance CL31 is easy to install. It has a radiation shield that protects the unit during precipitation and against excessive heat or cooling in extreme temperatures. The automatic window blower with heater improves performance by keeping the window clean and dry. In cold conditions heating prevents frost generation on the window. Data messages
  • Cloud hits (up to 3 layers) and status information
  • Cloud hits, status, and backscatter profile
  • Emulation of CT12K, CT25K, LD-25/40
  • Sky condition (optional) Vaisala Ceilometer CL31 is a compact and lightweight instrument for cloud base height and vertical visibility measurements. It detects 3 cloud layers simultaneously. CL31 uses a pulsed diode laser LIDAR (light detection and ranging) technology. CL31 is ideal for aviation and meteorological applications.

Operating temperature −55 … +60 °C (−67 … +140 °F), Operating humidity 0 … 100 %RH Wind tolerance Up to 55 m/s (123 mph) Vibration Lloyds Register / IEC 60068‑ 2‑ 6 5 … 13.2 Hz, ±1.0 mm 13.2 … 100 Hz, ±0.79 g 9.1 … 150 Hz, ±0.5 g Pollution degree 2 Maximum operating altitude 3000 m (approx. 9800 ft) IP rating IP65 (measurement unit) IPX6 (with radiation shield) Inputs and outputs Operating voltage 115/230 V AC 100 – 127 V AC, 20 7 – 253 V AC Power consumption Power consumption (typical) 310 W Measurement unit 15 W Internal heater 100 W Window conditioner heater 175 W Window blower 20 W Frequency (min/max) 50/60 Hz No-break power supply 12 V sealed lead-acid battery, 2 Ah Backup battery 12 V internal, 2 Ah Overvoltage protection Low-pass filter, VDR Overvoltage category II Interfaces Data • RS‑ 232

  • RS ‑ 485, multidrop, 2‑ wire
  • DXL421 modem module
  • LAN (Ethernet) interface option Maintenance RS‑ 232 Baud r ate RS‑ 232 / RS‑ 485 300 … 57 600 bps Modem V .21, V.22 300 … 1200 bps Mechanical specifications Tilt positions Vertical or 12° tilted Dimensions Measurement unit 620 × 235 × 200 mm (24. 41 × 9.25 × 7.87 in) Height with radiation shield 1190 mm (47 in) Total 1190 × 335 × 324 mm 76 in) Weight Measurement unit 12 kg (26.5 lb) Radiation shield and blower 19 kg (41.8 lb) Total 31 kg (68 lb) Plywood transport container Container size 1400 × 490 × 450 mm (55 × 19. 30 × 17.72 in) Container weight 47 kg (103.6 lb) Measurement performance Measurement range 0 … 7.6 km (0 … 25 000 ft) Measurement resolution 10 m (33 ft) or 5 m (16 ft), selectable Reporting interval Programmable 2 … 120 s, or polling Measurement interval 2 s default Distance measurement accuracy against a hard tar get Greater of ±1 % or ±5 m (16 ft) Spare parts and accessories Cable termination box with extra transient pr otection Termbox-1200 PC maintenance cable QMZ101 Shock absorbing mounting pad for ship installations CT3 5022 Modem DXL421 Attachment mechanics for radio modem antenna CLR ADIOKIT Graphical User Interface for Ceilomet ers CL-VIEW Boundary Layer View Software for Ceilomet ers BL-VIEW Bird deterrent CL31BIRDKIT Air Quality Plug and Play Package for Ceilomet er with laptop and pre- installed BL‑ View CLAQPACKAGE Compliance EU directives and regulations LVD, EMC, RoHS EMC immunity IEC/EN 61326‑ 1, industrial environment EMC emissions CISPR 32 / EN 55032, Class B EN 61000-3-2 EN 61000-3-3 Electrical safety IEC/EN 60950 Environmental IEC/EN 63000 Eye safety IEC/EN 60825-1:2014 Compliance marks CE, RCM, China RoHS, UKCA Published by Vaisala | B210415EN-H.1 © Vaisala Oyj 2021 All rights reserved. Any logos and/or product names are trademarks of Vaisala or its individual partners. Any reproduction, transfer, distribution or storage of information contained in this document is strictly prohibited. All specifications — technical included — are subject to change without notice. www.vaisala.com