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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 character

CRLF

= Carriage Line Feed

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Summary of Contents for CS135

Page 1: ...CS135 Ceilometer User Guide Issued 18 3 13 Copyright 2012 2013 Campbell Scientific Ltd CSL 950...

Page 2: ......

Page 3: ...e repair is under guarantee or not Please state the faults as clearly as possible and if the product is out of the guarantee period it should be accompanied by a purchase order Quotations for repairs...

Page 4: ......

Page 5: ...t for recycling Any batteries contained within the product or used during the products life should be removed from the product and also be sent to an appropriate recycling facility Campbell Scientific...

Page 6: ......

Page 7: ...ations 7 2 4 6 Communications Specifications 7 Section 3 Initial checks 8 Section 4 Installation 9 4 1 Location and Orientation 9 4 2 Grounding 9 4 3 Mounting the CS135 9 4 4 Tilt Angle 10 4 5 Connect...

Page 8: ...Figures 2 1 CS135 Ceilometer 3 2 2 Principle of operation 5 4 1 Mounting footprint 10 4 2 Setting the tilt angle 11 4 3 Connector layout 12 4 4 Cable Connections 15 4 5 USB port 16 4 6 Connecting Bat...

Page 9: ...user to serious hazards Ignoring these warnings could result in injury or death and or irrevocable damage to the sensor unit Cautions warn of potential hazards Ignoring these cautions could result in...

Page 10: ...TS CLASS 1M LASER PRODUCT Removing the laser module with the power applied to the CS135 or battery connected may expose the user to hazardous class 3B laser radiation No attempt should be made to oper...

Page 11: ...d by trained personnel Removal of electronic module covers or connectors while the unit is powered will expose the operator to potentially hazardous voltages and risk damage to the sensor 2 Product Ov...

Page 12: ...er profiles Peaks in each of these filtered profiles are detected using thresholds based upon the filter bandwidth used and the high frequency signal noise level This results in another set of likely...

Page 13: ...e CS135 employs a novel split lens design to increase optical signal to noise ratio over other instruments while maintaining Class 1M eye safety by integrating larger optics into a compact package see...

Page 14: ...as follows AUX fuse HBC 5 A T PSU fuse HBC 500mA T All fuses are 5 x 20 mm slow blow T and are the same for both 115 VAC and 230 VAC Battery Internal 12V 2Ah battery provides 1hr measurement without t...

Page 15: ...ge 40 C to 60 C Relative Humidity Range 0 to 100 IP Rating IP 66 2 4 6 Communications Specifications Supported serial settings 8 bits no parity 1 stop bit default 7 bits even parity 1 stop bit 7 bits...

Page 16: ...ce you have done these stages See Fig 4 3 in Section 4 5 1 The laser will be operating as soon as the battery is connected It should not point in any direction where it could be viewed with magnifying...

Page 17: ...surements may be safety related Take care that the orientation allows tilting in whatever direction is desired 4 2 Grounding The CS135 must be properly grounded by taking a ground wire with a minimum...

Page 18: ...the sensor north in the northern hemisphere and south in the southern hemisphere to prevent the sun shining directly into it it can reduce problems caused by direct specular reflections from ice crys...

Page 19: ...User Guide 11 Fig 4 2 Setting the Tilt Angle...

Page 20: ...One is for communications one provides power input to the unit itself and the other one takes power from the unit to the hood heater and blower Tilting the unit will provide better access to these co...

Page 21: ...ied cable cores 9 PIN D Connector fig 4 4 RS232 RS485 Half duplex RS485 Full duplex RS422 1 Red 8 CTS Y Y Tx non inverting 2 Yellow 7 RTS B Rx non inverting 3 Green 5 Gnd 4 Black Gnd Gnd 5 White 2 Tx...

Page 22: ...he cable supplied or alternative replacement should be capable of carrying current in excess of that fuse rating The power source should be fitted with a two pole isolator and should be fitted as near...

Page 23: ...her The type of cable supplied is not recommended for lengths greater than 10 m In particular longer length RS485 cables should incorporate twisted pairs Please contact Campbell Scientific if you wish...

Page 24: ...be shipped with the back up battery disconnected It should be connected as shown in Fig 4 6 before bringing the unit into use Fig 4 6 Connecting Battery To do this the cover and enclosure lid must fi...

Page 25: ...be lifted away The cover contains a flying lead used to take power to the hood heater and blower Be careful not to trap and damage this when lifting the cover clear 4 6 2 Removing the Enclosure Lid R...

Page 26: ...The optics should be protected from possible accidental damage For storage the back up battery should be disconnected Leaving the battery connected during storage will mean that the unit will still b...

Page 27: ...de Commands General Table 5 1 gives a summary of the terminal mode commands available Commands will always output all parameters on a new line after a CR LF then the CS135 prompt CS135 If you only wan...

Page 28: ...n be replaced with a comma Back space will abort the command 5 1 3 Terminal mode command examples The following text shows an example of setting up the CS135 serial port This example would set the ser...

Page 29: ...and heater OFF Hood 2 Hood blower ON and heater ON Hood 3 Hood blower and heater AUTO default Internal 0 Internal heater OFF Internal 1 Internal heater ON Internal 2 Internal heater AUTO default Laser...

Page 30: ...nd external blower speed Blower_Voltage sets the voltage applied to the external blower in milli volts mV From 8000 to 14000 The default is 12000 Boost_Volts sets the boost voltage to be applied to th...

Page 31: ...minutes ss seconds i e time 2000 01 01 10 00 00 would set the time to January 1st 2000 at 10 00 00 Note The set time could drift by up to 14 seconds a day UNITS Units Sets measurement units and tilt c...

Page 32: ...n the format yyyy mm dd 11 39 46 Time in the format hh mm ss Line Example line output 3 DSP_OS A Description of the line sections Section Description A DSP OS revision number Line Example line output...

Page 33: ...tion of the line sections Section Description A Measurement units and tilt correction Note Refer to the UNITS command Line Example line output 12 TRH A B C Description of the line sections Section Des...

Page 34: ...dirty This can only be set if the laser is on 0002 XXXX XXXX Tilt beyond limit set by user default 45 degrees 0001 XXXX XXXX No communications between DSP and inclinometer board Description of the mi...

Page 35: ...4 Example of how to use the CS135 POLL command to request preconfigured message outputs First configure the CS135 to use polling mode from the terminal interface via the MCFG command as follows CS135...

Page 36: ...S must be sent using xmodem protocol For example to load a new DSP operating system Enter terminal mode by typing Open 0 for a sensor with the default ID 0 This will return the prompt CS135 Type the c...

Page 37: ...sed while the CS135 is powered off and on again it will return to factory defaults Note that to power cycle the CS135 the battery has to be disconnected as well as switching the main power off and on...

Page 38: ...ages may be more efficient in terms of data storage and transmission CL31 and CT25K messages follow formats used by common existing CL31 and CT25K sensors allowing easier replacement or network expans...

Page 39: ...tection status is 0 1 2 5 or 6 h3 h4 5 characters 4th Height If detection status is 4 h4 Highest cloud base reported If detection status is 0 1 2 3 or 5 h4 flags 12 characters in 3 groups of 4 space s...

Page 40: ...failed XXXX 0008 XXXX TOP boards ADC and DAC are not within specifications XXXX 0004 XXXX TOP boards on board PSUs are out of bounds XXXX 0002 XXXX Communications have failed between TOP board and the...

Page 41: ...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 character CRLF Carriage Return Line Feed...

Page 42: ...ge status 0 No significant backscatter 1 One cloud base detected 2 Two cloud bases detected 3 Three cloud bases detected 4 Four cloud bases detected 5 Full obscuration determined but no cloud base det...

Page 43: ...s CR LF Carriage Return and Line Feed LINE 3 scale9res9n9 energy9lt9ti_bl9pulse9rate9sum CR LF where scale 5 characters Attenuated_SCALE parameter 0 99999 100 is default res 2 characters Backscatter p...

Page 44: ...e Attenuated_SCALE parameter Each sample is coded with a 20 bit HEX ASCII character set msb nibble and bit first 2 s complement The profile is not corrected for the tilt angle CR LF Carriage Return Li...

Page 45: ...ter message status 0 No significant backscatter 1 One cloud base detected 2 Two cloud bases detected 3 Three cloud bases detected 4 Four cloud bases detected 5 Full obscuration determined but no cloud...

Page 46: ...3h3__d4_h4h4h4__d5_h5h5h5 CR LF note spaces where d 1 character Data available 0 to 8 Amount of lowest layer in oktas 9 Vertical visibility only available 1 No sky condition data available 99 Insuffic...

Page 47: ...in 10s of metres or 100s of feet if no 5th layer is reported h5h5h5 CR LF Carriage Return Line Feed LINE 5 ETX CRC16 EOT CR LF where ETX End of Text character CRC16 4 characters CRC16 CCITT Checksum E...

Page 48: ...cter message status 0 No significant backscatter 1 One cloud base detected 2 Two cloud bases detected 3 Three cloud bases detected 4 Four cloud bases detected 5 Full obscuration determined but no clou...

Page 49: ...ata available 0 to 8 Amount of lowest layer in oktas 9 Vertical visibility only available 1 No sky condition data available 99 Insufficient data h1h1h1 3 characters Height of the lowest cloud layer in...

Page 50: ...nput 0 2500 pulse 4 characters Pulse quantity x 1000 0000 9999 rate 2 characters Sample rate MHz 00 99 sum Sum of detected and normalized backscatter 0 999 Multiplied by scaling factor times 104 At sc...

Page 51: ...ways CL ID A single ASCII character 0 9 a z or A Z case sensitive Default ID 0 OS Operating system 100 999 1 Always 1 Samples backscatter resolution and number of samples 1 MESSAGE 101 10 m x 770 samp...

Page 52: ...alarm status 0 No alarm or warning W Warning A Alarm h1 5 characters 1st Height If detection status is 1 2 or 3 h1 Lowest cloud base reported If detection status is 4 h1 Vertical visibility as calcula...

Page 53: ...ved for future use XXXX 0400 XXXX Blower failure XXXX 0200 XXXX Reserved for future use XXXX 0100 XXXX Humidity sensor failure XXXX 0080 XXXX Heater fault XXXX 0040 XXXX High background radiance XXXX...

Page 54: ...ters Background light millivolts at internal ADC input 0 2500 L0112HN15 9 characters Reserved defaults shown sum Sum of detected and normalized backscatter 0 999 Not used in Operating System 1 CR LF C...

Page 55: ...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 character CR LF Carriage Return Line Feed...

Page 56: ...0 OS Operating system 100 999 2 Always 2 Samples backscatter resolution and number of samples 1 MESSAGE 107 10 m x 770 samples range 7700 m 2 MESSAGE 108 20 m x 385 samples range 7700 m 3 MESSAGE 109...

Page 57: ...n status is 1 2 or 3 h1 Lowest cloud base reported If detection status is 4 h1 Vertical visibility as calculated If detection status is 0 or 5 h1 h2 5 characters 2nd Height If detection status is 2 or...

Page 58: ...r in oktas h4h4h4 3 characters Height of the 4th cloud layer in 10s of metres or 100s of feet if no 4th layer is reported h4h4h4 d5 1 character Cloud amount of the 5th layer in oktas h5h5h5 3 characte...

Page 59: ...x 770 bytes CR LF The two way attenuated normalised backscatter profile 100000 srad km 1 unless otherwise scaled by the Attenuated_SCALE parameter Each sample is coded with a 20 bit HEX ASCII characte...

Page 60: ...urn Line Feed LINE 2 S WA9h19h29h39flags CR LF where S 1 character message status 0 No significant backscatter 1 One cloud base detected 2 Two cloud bases detected 3 Three cloud bases detected 4 Full...

Page 61: ...use 0200 XXXX Reserved for future use 0100 XXXX Reserved for future use 0080 XXXX Window contaminated 0040 XXXX Battery low 0020 XXXX Transmitter expire warning 0010 XXXX Heater or humidity sensor fa...

Page 62: ...CS135 Ceilometer 54 LINE 3 ETX CR LF ETX End of Text Character CR LF Carriage Return Line Feed...

Page 63: ...cter message status 0 No significant backscatter 1 One cloud base detected 2 Two cloud bases detected 3 Three cloud bases detected 4 Full obscuration determined but no cloud base detected 5 Some obscu...

Page 64: ...unt of lowest layer in oktas 9 Vertical visibility only available 1 No sky condition data available 99 Insufficient data h1h1h1 3 characters Height of the lowest cloud layer in 10s of metres or 100s o...

Page 65: ...vary depending on the site location The CS135 is capable of self diagnosing dirty lenses and will indicate in its output when the lenses are contaminated In any case we suggest six monthly intervals...

Page 66: ...pressure may lead to some types of contaminant scratching the window surface Over time such scratches can lead to reduced sensitivity 7 3 Removing the Cover The cover is removed by removing the four s...

Page 67: ...ws as shown in Fig 7 2 Fig 7 2 Removing the Enclosure Lid Opening enclosure lid MUST be carried out by a competent person Removing the enclosure lid may expose hot surfaces The unit will still be powe...

Page 68: ...degraded performance 3 flashes every 10 seconds alarm measurements not possible The DSP STATUS LED duplicates the LED visible through the top window There is a red LED on the PSU It will give 0 5 seco...

Page 69: ...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 effectively short circuit any voltages above this level...

Page 70: ...rta T5M 1W7 CANADA www campbellsci ca dataloggers campbellsci ca Campbell Scientific Centro Caribe S A CSCC 300N Cementerio Edificio Breller Santo Domingo Heredia 40305 COSTA RICA www campbellsci cc i...

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