Campbell-scientific CS135 Lidar Ceilometer Manuel d'utilisateur

CS135 Ceilometer User Guide Issued 18.3.13 Copyright © 2012-2013 Campbell Scientific Ltd. C

CS135 Ceilometer 2 Ensure that the correct voltage supply is provided to the sensor. 1.4 Laser Safety The CS135 sensor incorporates a laser diod

User Guide 3 The unit should only be serviced by trained personnel. Removal of electronic module covers or connectors while the unit is powered will

CS135 Ceilometer 4 2.1 Introduction The CS135 is a LIDAR (LIght Detection And Ranging). It emits short pulses of near infra-red light into the atm

User Guide 5 The control system of the CS135 is divided into three modules, DSP, TOP and PSU as follows:- DSP is the main data processing and commun

CS135 Ceilometer 6 2.4 Specifications 2.4.1 Measurement Specifications Maximum Reporting Range: 10 km / 32,800 ft Minimum Reporting Resolution: 5 m

User Guide 7 2.4.4 Optical Specifications Pulse duration: 100 ns Pulse frequency 10 kHz Wavelength: 905 nm Half-angle laser divergence: 0.35 mrad L

CS135 Ceilometer 8 Signal voltage levels Minimum Value Nominal Value Maximum Value RS232 Communications RS232 input threshold Low 0.8V 1.5V - RS2

User Guide 9 If the unit has been in storage or transit for more than a few months, the clock battery may be discharged. However, it will charge from

CS135 Ceilometer 10 Remove the washers and nuts from the protruding length screw. Then lower the CS135 into place. If you plan to tilt the unit make

User Guide 11 Fig 4.2 Setting the Tilt Angle

CS135 Ceilometer 12 4.5 Connectors and wiring 4.5.1 Base connectors The CS135 has three connectors on its base. One is for communications, one prov

User Guide 13 Table 4.1 Function of the connector pins Mains Connector Pin Function Colour of supplied cable cores 1 Live Brown 2 Not connected NA

CS135 Ceilometer 14 The power cable must not be carrying mains voltage when it is being connected or disconnected. 4.5.2.1 Power Connections The fo

User Guide 15 4.5.2.2 Communications connections The communications cable is terminated at one end with a removable 9 pin D-connector (DB9).

CS135 Ceilometer 16 Fig 4.5 USB port 4.6 Connecting the Back-up Battery The CS135 will be shipped with the back-up battery disconnected. It sho

User Guide 17 4.6.1 Removing the Cover The cover is removed by removing the four screws as shown in Fig 4.7. Fig 4.7 Removing the Cover The cover

CS135 Ceilometer 18 Opening the access door MUST be carried out by a competent person Removing the enclosure lid may expose hot surfaces 4.7 Storag

User Guide 19 5. Operation 5.1 Terminal mode 5.1.1 Entering/Exiting the CS135 Terminal Mode The menu system is entered with the command OPEN S

CS135 Ceilometer 20 The following settings are used: RS232/422/485 interface (default) USB service port RS232 Full Duplex Baud: rate 115200 Ba

User Guide 21 Table 5.1 Summary of the terminal mode commands available Command Parameter/ Parameter block Description ALARMS Angle Angle is the th

Guarantee This equipment is guaranteed against defects in materials and workmanship. This guarantee applies for twelve months from date of delivery.

CS135 Ceilometer 22 Message_ID_D Message_ID_E Note that if low baud rates and message intervals or short polling are required it may not be possible

User Guide 23 Baud = 6, 19200 baud. Baud = 7, 38400 baud. Baud = 8, 57600 baud. Baud = 9, 76800 baud. Baud = 10, 115200 baud (default). Bits_Parity =

CS135 Ceilometer 24 109* CL31 Message 2, 1500 range bins, 5m resolution 110* CL31 Message 2, 770 range bins, 5m resolution 111* CL31 Message 2, No

User Guide 25 command) Line Example line output 8 Heaters A B C Description of the line sections Section Description A Hood blower mode B Internal

CS135 Ceilometer 26 Line Example line output 15 HOffset A Description of the line sections Section Description A Height offset reported in feet o

User Guide 27 XXXX XXXX 1000 Photo diode calibrator has failed XXXX XXXX 0800 The sensor could not reach the desired gain levels XXXX XXXX 0400 Las

CS135 Ceilometer 28 Example of how to use the POLL command to request a specific message output type. First configure the CS135 into polling mode as

User Guide 29 If the switch is pushed for four seconds the CS135 will reboot in exactly the same way as the REBOOT terminal command. If it is held clo

CS135 Ceilometer 30 A green LED is visible through the window, see Fig 5.2. It will give 0.5 second flashes as follows:- 1 flash every 10 seconds =

User Guide 31 1 = One cloud base detected 2 = Two cloud bases detected 3 = Three cloud bases detected 4 = Four cloud bases detected 5 = Full obscurati

CS135 Ceilometer 32 0004 XXXX XXXX Photo diode and Laser windows are dirty. This can only be set if the laser is on 0002 XXXX XXXX Tilt beyond limit

User Guide 33 LINE 3 ETX CRC16 EOT CR LF where ETX = End-of-Text character CRC16 (4 characters) = CRC16-CCITT Checksum EOT = End-of-Transmission ch

CS135 Ceilometer 34 MESSAGE 002 (Profile, no sky condition) LINE 1 SOH CS ID OS N ETX CR LF where SOH = Start-of-Heading character CS = Always &q

User Guide 35 h2 (5 characters) = 2nd Height If detection status is 2, 3 or 4 h2 = Second highest cloud base reported If detection status is 5 h2 =H

CS135 Ceilometer 36 LINE 4 SSSSSSSSSSSSSSSSSSSSSSSSSSSSS...(2048 x 5 bytes) CR LF The two-way attenuated normalised backscatter profile (10000

User Guide 37 MESSAGE 003 (no profile, sky condition, available in future OS) LINE 1 SOH CS ID OS N ETX CR LF where SOH = Start-of-Heading character

CS135 Ceilometer 38 h2 (5 characters) = 2nd Height If detection status is 2, 3 or 4 h2 = Second highest cloud base reported If detection status is

User Guide 39 h5h5h5 (3 characters) = Height of the 5th cloud layer in 10s of metres or 100s of feet, if no 5th layer is reported h5h5h5 = '//

CS135 Ceilometer 40 MESSAGE 004 (profile, sky condition, available in future OS) LINE 1 SOH CS ID OS N ETX CR LF where SOH = Start-of-Heading char

User Guide 41 h2 (5 characters) = 2nd Height If detection status is 2, 3 or 4 h2 = Second highest cloud base reported If detection status is 5 h2 =H

PLEASE READ FIRST About this manual Some useful conversion factors: Area: 1 in2 (square inch) = 645 mm2 Length: 1 in. (inch) = 25.4 mm

CS135 Ceilometer 42 CR LF = Carriage Return + Line Feed LINE 4 scale9res9n9 energy9lt9tr9ti_bl9pulse9rate9sum CR LF where scale (5 characters)

User Guide 43 LINE 6 ETX CRC16 EOT CR LF where ETX = End-of-Text character CRC16 (4 characters) = CRC16-CCITT Checksum EOT = End-of-Transmission cha

CS135 Ceilometer 44 LINE 2 S WA9h19h29h39flags CR LF where S (1 character) = message status: 0 = No significant backscatter 1 = One cloud base det

User Guide 45 Description of the most significant alarm word (left word, bits going left to right) Bit Description 8000 XXXX XXXX Transmitter shut-of

CS135 Ceilometer 46 CR LF = Carriage Return + Line Feed LINE 3 scale9res9n9 energy9lt9tr9ti_bl9L0112HN159sum CR LF where scale (5 characters) =

User Guide 47 LINE 5 ETX CRC16 EOT CR LF where ETX = End-of-Text character CRC16 (4 characters) = CRC16-CCITT Checksum EOT = End-of-Transmission c

CS135 Ceilometer 48 MESSAGES 107 - 112, CL31 Message 2 (available in future OS) LINE 1 SOH CL ID OS 2 Samples ETX CR LF where SOH = Start-of-Head

User Guide 49 LINE 2 S WA9h19h29h39flags CR LF where S (1 character) = message status: 0 = No significant backscatter 1 = One cloud base detected 2

CS135 Ceilometer 50 0 to 8 Amount of lowest layer in oktas 9 Vertical visibility only available -1 No sky condition data

User Guide 51 "L0112HN15" (9 characters) = Reserved, defaults shown sum = Sum of detected and normalized backscatter, 0 ... 999. Not used i

CS135 Ceilometer 52 6.4 CT25K Messages MESSAGE 113, CT25K Data Message No. 1 LINE 1 SOH CT ID OS 10 ETX CR LF where SOH = Start-of-Heading cha

User Guide 53 If detection status is 4 h1 =Vertical visibility as calculated If detection status is 0 or 5 h1 ="/////" h2 (5 characters)

CS135 Ceilometer 54 LINE 3 ETX CR LF ETX = End-of-Text Character CR LF = Carriage Return + Line Feed

User Guide 55 MESSAGE 114, CT25K Data Message No. 6 (available in future OS) LINE 1 SOH CT ID OS 10 ETX CR LF where SOH = Start-of-Heading charact

CS135 Ceilometer 56 If detection status is 2 or 3 h2 = Second highest cloud base reported If detection status is 4 h2 =Height of highest signal de

User Guide 57 LINE 4 ETX CR LF ETX = End-of-Text Character CR LF = Carriage Return + Line Feed 7. Maintenance 7.1 General The CS135 is a robust

CS135 Ceilometer 58 It is advisable to use an air duster to blow any loose dust and dirt from the window as a first step. Using a lint free lens clot

User Guide 59 7.4 Removing the Enclosure Lid In some circumstances it may be necessary to remove the lid covering the electronics unit, for example

CS135 Ceilometer 60 7.5 Diagnostic LED Indicators Within the Enclosure Two green LEDs labelled "LASER ON" and "STATUS" are visi

User Guide 61 7.6 Electrical Safety Testing If carrying out insulation tests do not use voltages above 300V RMS as the mains input has devices that

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CAMPBELL SCIENTIFIC COMPANIES Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com • info@campbel

ii 5.3 LED Indicator ....... 29 Section 6. Messages ...

1 CS135 Ceilometer 1. General Information 1.1 Manual Version Table 1.1 Manual revisions Manual Version Revisions 1.0 Applicable to Operating System