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Safety

8

Revision R09, November 2016

refer to chapter 2.6 Safety Labelling).

2.4

Requirements on Personnel

l

The CHM 15k may only be installed and commissioned by properly trained
personnel who have received instructions on operating safety.

l

Maintenance or adjustment work on the CHM 15k may only be carried by
G. Lufft GmbH service personnel or specially trained and authorized techni-
cians of the Customer.

l

Anyone who is entrusted with work to install and commission the CHM 15k
must have completely read and understood this Manual.

l

Personnel working with the CHM 15k must not be in a state of fatigue or
under the influence of alcohol or medication or have physical impairments
of any kind that might temporarily or lastingly restrict their attention or
judgement.

2.5

Safety Notes Regarding Transportation, Installation, Com-
missioning & Cleaning

l

For handling, shipment or transportation, the CHM 15k must be duly pack-
aged and placed in the transporting position (refer to Fig. 5). Adequate
hoisting equipment and an appropriate means of transportation must be
used in all cases.

l

Once packaged, the CHM 15k must be secured and protected against acci-
dental shifting, mechanical shock or other similar impacts that may occur
inside the selected means of transportation, for example, by using tension
belts.

l

A packaged CHM 15k must not be stacked.

l

The CHM 15k requires a footprint area of 50 x 50 cm. It must be installed
and assembled in a stable and fixed position on a suitably sized concrete
foundation. The maximum permitted inclination angle of the mounting
base is 5 mm/m.

l

If the CHM 15k is not intended to be assembled immediately, it must be
protected from external influences and securely stored.

l

For installation, the following minimum prescribed clearances must be kept
betweenthe CHM 15k and:

l

Prevent irradiation from strong light sources.

l

The angle of insolation must be less or equal 15 degrees against the vertical
line. Please ask for a suiable adapter plates.

l

The assembly site must be at a great enough distance from tree plantations
or shrubbery to prevent leaves or needles restricting the cloud meter's light
outlet openings.

l

At least two persons are required for installation of the CHM 15k.

l

On completion of installation work, ensure that no safety-relevant changes

- mobile phones

2,5 m

- stationary emitters, ground stations (



100 W of output power) 25 m

- a second cloud height meter (to prevent optical interferences)

10 m

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Содержание CHM 15k Nimbus

Страница 1: ...www lufft com a passion for precision passion pour la pr cision pasi n por la precisi n passione per la precisione a p 1300m 1500m Manual Cloud Height Sensor CHM 15k...

Страница 2: ...ergstrasse 20 70736 Fellbach Germany Phone 49 711 51822 831 Fax 49 711 51822 944 E mail info lufft de Info Sales E mail service lufft de Support Lufft Berlin Date Revision Comment March 2014 I0 Firmwa...

Страница 3: ...lling the CHM 15k 21 6 1 1 Preparatory Work 21 6 1 2 Installation on the Mounting Base 22 6 2 Electrical Installation 25 7 Starting Up Shutting Down 27 7 1 Starting Up with serial connection RS485 27...

Страница 4: ...m Detection Range MXD 68 9 8 Vertical optical range VOR 69 9 9 Precipitation and haze 69 9 10 Mixed layer height 69 9 11 Cloud amount cloud cover BCC TCC 70 9 12 Sky condition index SCI 71 10 Cleaning...

Страница 5: ...only be guaranteed when the CHM 15k Cloud Height Meter is operated as intended and in accordance with the information contained in this Manual The CHM 15k is only intended for single phase operation...

Страница 6: ......

Страница 7: ...ent risk potential the CHM 15k qualifies as a class 1M laser device 2 2 General Safety Measures l All safety notes in this User Manual including any other applicable docu ments must be duly observed a...

Страница 8: ...d and protected against acci dental shifting mechanical shock or other similar impacts that may occur inside the selected means of transportation for example by using tension belts l A packaged CHM 15...

Страница 9: ...installation 2 6 Safety Labelling 2 6 1 User Manual Throughout this Manual the following pictograms and signal words are used DANGER Warns of laser radiation CAUTION Warns of potential damage NOTE Im...

Страница 10: ...ovember 2016 2 6 2 CHM 15k Product labelling is as follows see Fig 1 l 4 warning labels with safety notes l 1 plate with performance data l 1 Beware of Laser Radiation warning label l 1 type plate rea...

Страница 11: ...ution 5m 30 m in 5m steps can be selected by user 15 m default value 5 m in high resolution vector in the NetCDF file logging time reporting cycle 2 s to 600 s programmable standard values are 15 s 30...

Страница 12: ...Data interfaces Communication interfaces RS485 LAN Optional DSL RS232 or modem V 21 V 22 V 22bis Electrical parameters Nominal voltage 230 VAC 10 optional 100 115VAC 10 Line frequency 50 Hz Min power...

Страница 13: ...st spare part Installation requirements Suitable low voltage distribu tion systems TN S system grounded supply network CHM 15k casing grounded neutral and protective conductor as separate wires TN C s...

Страница 14: ......

Страница 15: ...15k The CHM 15k Cloud Height Meter is l of compact design l operational in climatic conditions as specified in Table 1 l of modular setup 4 1 Setup of CHM 15k The CHM 15k is enclosed by a double shel...

Страница 16: ...ess to the inner casing shell and the glass panels for necessary cleaning The outer and the inner door work on different locking mechanisms in order to avoid personal injury and to protect the interna...

Страница 17: ...ain controller is the central unit that monitors and controls all the sensors in operation Laser 59 Laser controller module 60 Main controller 1 Power supply 12 15 VDC 54 Trigger board 6 APD unit 29 L...

Страница 18: ...e results of monitoring noise level supply voltage and DC current with and without a test pulse Due to its internal setup the light source is essentially characterized by the pulse repetition rate whi...

Страница 19: ...r 4 DIN 571 10 x 140 ZN screws 4 ISO 7093 10 5 KST PA washers 4 ISO 7093 10 5 A2 washers l User manual and device software If requested by the customer an adapter frame can be delivered together with...

Страница 20: ......

Страница 21: ...pening becomes necessary e g following a malfunction work of this kind may only be performed by duly instructed personnel The CHM 15k Cloud Height Meter is assembled and fixed on a suitably sized conc...

Страница 22: ...allation work The weight of the CHM 15k amounts to 70 kg For this reason at least two persons are required to assemble the Cloud Height Meter To install the CHMK 15k Cloud Height Meter proceed as foll...

Страница 23: ...ons as you do this Position for raising Fig 8 Relocation further transportation options By sack barrow with bigger distances to concrete base Fig 7 Manual transportation put your hands into the openin...

Страница 24: ...asteners metric parts are part of the delivery imperial sizes can be used instead 3 8 screw size 1 S12 screw anchor 12 2 5 mm levelling screw integrated into the device foot 3 DIN 571 10 x 140 ZN scre...

Страница 25: ...nnection of the CHM 15k requires non detachable cabling as follows 1 10 mm grounding cable 1 pole green yellow 3 meters 2 Data cable RS 485 2 wire black cable A conductor green B conductor red earth g...

Страница 26: ...Installation 26 Revision R09 November 2016 Fig 11 DSL connection using the Black Box DSL Interface Fig 12 Principle diagram of electrical installation...

Страница 27: ...beam be observed using optical instruments field glasses Starting conditions After the on site mains circuit breaker has been turned into power on position the CHM 15k will start up by itself It will...

Страница 28: ...olling mode or l set it back to automatic transfer mode set SPACE RS485No Transfermode 1 CR LF Note This command refers to automatic transfer mode NOTE Pay special attention to the baud rate setting f...

Страница 29: ...direct connections between a laptop and the CHM 15k Nimbus The address 3 can be entered in a web browser window Fig 13 to communi cate with the instrument Fig 17 shows the Config Network tab in the Fi...

Страница 30: ...may also open the inner housing door and press the white shut down button at the main controller check service manual for details Procedures 1 or 2 have the same effect Measured data are saved on the...

Страница 31: ...RS 485 half dublex interface does not allow sending and receiving data at the same time Accordingly the interface has its own automatic switching mechanism This explains why users cannot send any com...

Страница 32: ...IPS 0 0 0 0 set query the static IP address LATitude LAT 52 40050 5240050 90 to 90 degree decimal value degrees north Layer NOL 3 1 9 JO DataClient limited to 5 LaserMode LSM 1 0 1 switch on off Lase...

Страница 33: ...dify critical values STandBy STB 0 0 1 standby mode with standby tel egram to reduce power consumption SHuTdown SHT 0 1 shutdown CHM system TimeOutRs485 s TOR 30 5 3600 TimeZoneoffsetHours TZH 0 12 12...

Страница 34: ...omatic more identical to reporting time A decrease in time resolution corresponding to an increase in dt will cause more photon pulses shots to be averaged over time and yields an improvement in signa...

Страница 35: ...kChars Sets a Number of characters the CHM 15k will ignore within TimeOutRS485 s if they are receives in a fragmentary string which may be a query not ended with EOT 04 HEX CR 0D HEX LF 0A HEX The par...

Страница 36: ...rintable characters STX CR LF and EOT stand for one byte with hexadecimal codes 02 0D 0A and 04 in this same order The value 2B represents the checksum of the two s complement formed over the whole re...

Страница 37: ...ards it is not possible to reverse this setting as usual because of fail ure to establish normal communication It will be reset automatically to the default baud rate specified by parameter BaudAfterE...

Страница 38: ...inutes and ss seconds ref erenced to GMT zone Greenwich Mean Time Example set 16 DateTime 13 04 2006 17 22 46 CR LF will set 13th April 2006 as the date and 17 22 46 GMT as the exact time The terminal...

Страница 39: ...the CHM15k Nimbus does support addi tional user telegrams In addition to the characters S L A numbers are supported too With S 1 L 2 A 3 the first numbers are predefined The telegram 4 is a system dep...

Страница 40: ...2nd cloud layer 38 SPACE 20 HEX 39 43 3rd cloud layer 44 SPACE 20 HEX 45 48 Laser beam penetration depth into 1st cloud layer 49 SPACE 20 HEX 50 53 Laser beam penetration depth into 2nd cloud layer 5...

Страница 41: ...hese values The same fields will carry a minus sign if their values cannot be established because of a device error For detailed information on device error types you should refer to the service codes...

Страница 42: ...now hh mm ss 29 3B HEX 30 Numbers of layer 31 32 36 1st Cloud layer CBH 37 3B HEX 38 42 2nd Cloud layer CBH 43 3B HEX 44 48 3rd Cloud layer CBH 49 3B HEX 50 54 Penetration depth of the laser beam int...

Страница 43: ...penetration depth of the laser beam into the 1st cloud layer CDE 135 3B HEX 136 139 Standard deviation penetration depth of the laser beam into the 2nd cloud layer CDE 140 3B HEX 141 144 Standard devi...

Страница 44: ...5 Aerosol layer 2 226 3B HEX 227 Quality index Aerosol layer 1 Byte 228 3B HEX 229 Quality index Aerosol layer 1 Byte 230 3B HEX 231 BCC base cloud cover 232 3B HEX 233 TCC total cloud cover 234 3B HE...

Страница 45: ...aw data telegram Detector temperature Temperature measured at the sensor displayed in Kelvin x 10 2 K NN1 unassigned NN2 unassigned Laser operating time h Laser lifetime hours of operation Optics stat...

Страница 46: ...conversion these 45 bytes are encoded in 60 60 45 3 x 4 ASCII characters following M except for the last line where only the last bytes typically less than 45 are encoded The example above contains E...

Страница 47: ...egrams The structure of data telegrams are defined in a file called telegram xml It can be downloaded and modified using the web interface in the superuser or service user mode In the firmware 0 743 s...

Страница 48: ...to Service Manual 8 4 2 Fundamentals NetCDF provides a computer platform independent interface for the saving and reading of scientific data It was developed under Unidata a project funded by the Nati...

Страница 49: ...a 50 93333 corresponding to 50 56 0 N float longitude units degrees_east long_name longitude of location The longitude of the measurement installa tion decimal Example Jena 11 58333 corresponding to 1...

Страница 50: ...loat beta_raw time range units unitless long_name normalized range cor rected signal signal_raw lp b c o r p_calc r Lidar backscatter raw data with 5 15 m range resolution normalized and range correct...

Страница 51: ...pho tons per shot float stddev time long_name standard deviation raw sig nal in photons per shot units counts shot Standard Deviation of the raw signal in photons shot short p_calc time long_name cali...

Страница 52: ...nge short VOR time long_name vertical optical range VOR unit m vertical optical range short VOE time long_name VOR uncertainty unit m vertical optical range uncertainty short CHO long_name cloud heigh...

Страница 53: ...institution Institution or company text software_version Linux kernal FPGA software Firmware text comment Descriptive comment text SerLOM Serial number of LOM text overlap_file name time of the overl...

Страница 54: ...e generated transmitted 7 00000080 Error SD card absent or defect 8 00000100 Error Detector high voltage control failed cable defect or absent 9 00000200 Warning Inner housing temperature out of range...

Страница 55: ...sion R09 November 2016 55 8 6 Firmware Update The CHM 15k Nimbus system can be updated via Ethernet WAN LAN connec tion Please check the web browser section below for details A superuser pass word is...

Страница 56: ...re download user manual and further configuration files l Service user can set the instrument serial number download the service manual and upload configuration files By entering a password in the Adm...

Страница 57: ...CDF files can be downloaded by double clicking in superuser or service mode Fig 16 Web interface viewer tab It shows 24h of present data with 5 min update rate The latest cloud measurement is displaye...

Страница 58: ...he RS485 configuration section in chapter 8 1 Before switching on the AFD mode Fig 17 Web interface network configuration panel service mode The static IP address netmask and gateway can be changed to...

Страница 59: ...uper user mode New firmware files are packed as protected zip files The packages can not be modified by the user New firmware releases are available from the Lufft web page Before updating the firmwar...

Страница 60: ...AFD mode If AFD mode is switched on the status of transferred files and any AFD error is shown here Fig 20 Web interface tab config system lower part in service mode access on system configuration pa...

Страница 61: ...ill be used immediately The user should avoid automatic time settings using the date time com mand RS485 and the ntpd process via TCP IP at the same time 8 8 AFD Mode The automatic file distribution s...

Страница 62: ...ashes are used to comment out commands Configuration file afdsettings txt directory tmp afd netcdf afd src dir options delete unknown files 0 delete queued files 6 files destination recipient ftp user...

Страница 63: ...ferred to a directory specified by subdirectory hostname year month Hostname h is the instrument name like CHM060001 year tY and month tm are specified by the instrument time settings A double slash a...

Страница 64: ...The raw data telegram is still uuencoded like in the RS485 transfer mode and must uudecoded before it can be read 8 10 NetCDF file tools There are different tool sets available to handle modify or me...

Страница 65: ...s with certain backscatter intensity and signal extinction Molecular absorption as well as Rayleigh scattering by air molecules is negligible at a laser wavelength of 1064 nm The distance from ground...

Страница 66: ...alues where the time average starts to where it stops here in the figure 3000m 6000m depends on the focus of usage of the ceilometer 9 3 Backscatter data In our firmware revisions the backscatter valu...

Страница 67: ...cloud base and after wards an upper cloud level using the signal intensity level that was determined for the cloud base The subtraction of these values result in the cloud penetra tion depth A thresh...

Страница 68: ...ratios versus the distance range At heights which are beyond the planetary boundary layer significant signals are only generated by clouds or aerosol layers The max imum detection range is calculated...

Страница 69: ...nsidered as a signal source Strong atmospheric turbidity and high particle density respectively produce a stronger signal than usual close to the instrument An integral over the signal in certain rang...

Страница 70: ...divided in a fixed number of small truncated cones Parts containing cloud bases are counted against the total number of cone parts The cloud cover values is expressed as a percentage value from these...

Страница 71: ...older CHM 15k systems the variable was handled as precipita tion index Table 20 shows how the index is defined Value Description telegram 2 NetCDF system hardware failure or system not ready 00 no fog...

Страница 72: ...Fig 27 Cloud amount algorithm The selected time interval used for the cloud cover calculation depends on the range a truncated cone function is used for the calculation...

Страница 73: ...s window in the web interface refer to figure 14 or the status codes via RS485 see section 8 5 shows more details about the origin of the error A green light in the lower left corner of the glass pane...

Страница 74: ...wer control light in the lower left corner 2 Receiver outlet on right side with red light indicating errors Fig 29 Fans inlet Remove snow sedimentation NOTE The CHM 15k Cloud Height Meter requires reg...

Страница 75: ...nner Door l Open outer and inner door l Detach cable 69 of thermostat at clip terminal XK013 l Remove rubber seal from inner door item 1 of figure 30 l Mount new rubber seal to inner door using suspen...

Страница 76: ...ontact your on site service technician or G Lufft GmbH NOTE For other detailed information which is in excess of this User Manual maintenance replacement and system assembly particulars you should ref...

Страница 77: ...untime engine l single program files which can be used for updates if the runtime was already installed l manual of the CHM 15k instrument l additional information tools In addition another product CD...

Страница 78: ...xists to avoid the pop up of the start dia logue The command line parameters and the pre installed autostart cmd exam ple file are explained in section 11 10 Immediately afters start the following dia...

Страница 79: ...times with an incorrect baud rate the CHM 15k will automatically set its baud rate to the BaudrateAfterError value which is also predefined to 9600 Baud after one logging interval To go on With Cancel...

Страница 80: ...ted see user guide chapter 8 3 5 The next block contains three buttons for automatic polling of data telegrams Below there is an input field for the internal measure period in seconds of the CHM 15k T...

Страница 81: ...ter each set or get command Finally another two paths are adjustable which concern local paths of the com puter where the DataClient runs measure path In this directory the telegram messages of CHM 15...

Страница 82: ...r SMA contains the number of raw data records used for SMA calcula tion without change of parameter maximum number of data for SMA this value should grow with succeeding telegrams up to 10 NetCDF file...

Страница 83: ...s A signal light indicates an alert of the suitable function During the start phase of CHM 15k some of these signals may light up How ever after some minutes the CHM 15k should enter normal operation...

Страница 84: ...this period send actions like set get variables must not be done because there is only a half duplex RS485 connection to the CHM 15k so simultaneous sending and receiving is not possible RS485 check s...

Страница 85: ...The default value is 16 suitable for the factory default RS485 number of a CHM15k l measurepath path path specifies the main directory of locally saved raw data telegrams NetCDF Default path is D Mea...

Страница 86: ...ows 2000 XP Dec 2010 3 36 First issue base on Labview 10 tested for Windows 7 XP March 2011 3 44 NetCDf parameter added nn1 nn3 temp_lom default path name changed instrument variable added Nimbus serv...

Страница 87: ...ents Revision R09 November 2016 87 Annex A Annex Service Manual Contents 1 Basic Information 2 Safety 3 Technical Data 4 Functional Description Setup 5 Malfunction Trouble Shooting 6 Maintenance 7 Rep...

Страница 88: ...09 Changing the characters after receiving LF or CR LF a clearly arranged list of all system parameters are generated The number of tabs are chosen in a way that with a standard tabulator grid of 8 ch...

Страница 89: ...rver 10 250 1 1 PowerSaveMode 0 ServiceMode 0 SerLom TUB080022 SetPeltier 1 Standby 0 SystemLifetime h 4763 TBCalibration 0 206800 TimeOutRS485 s 30 TimeZoneOffsetHours 1 TransferMode 3 TransferModeAf...

Страница 90: ...360 degree x100 Zenith 0 0 90 degree default 0 vertical x100 TimeZoneOffsetHours 1 12 12 Offset from UTC in hours CET 1 CST 6 BlowerMode 0 mode for blower control 0 always enabled 1 off from 20 to 4 N...

Страница 91: ...bench in service mode WaveLength nm 1064 nm RangeDim 1024 1 4096 size of range vector Range2Dim 32 1 4096 size of high resolution range vector RS485 MaxCrosstalkChars 5 0 1024 TimeOutRS485 30 5 3600...

Страница 92: ...n default config ApdTempGradient 2400 temperature gradient in mV K Settings not in default Config SlaveIP 0 0 0 0 not used for CHM 15k Nimbus Information to current versions and life times Firmware 0...

Страница 93: ...Linux Kernel bad block handling FPGA Reset ADC temperature sensor 12 2012 Table 27 Linux FPGA releases for CPU board 550 Linux FPGA releases Description for CPU Release 552 Published 15 06 1 2 13 Orig...

Страница 94: ...t changed e g new parameter added for near field embedded Linux file system changed 02 2013 0 718 Network configuration updated cloud algorithm in rare cases cloud base equals 0 m caused by division b...

Страница 95: ...will be redesigned and reintegrated in future 05 2015 0 733 mainboard revision and processor board revision shown on web interface service code bit 12 laser controller temperature combined with bit 1...

Страница 96: ...file name and its creation date is displayed in Web Interface as well as saved in the NetCDF file 4 Vaisala CT25K telegram messages No 1 and 6 are included in user telegrams 8 and 9 5 SD card operati...

Страница 97: ...lable 56 Fig 15 Web interface NetCDF files superuser Displays a list of NetCDF files stored on the internal SD Card NetCDF files can be downloaded by double clicking in superuser or service mode 57 Fi...

Страница 98: ...cover calculation depends on the range a truncated cone function is used for the calculation 72 Fig 28 Glass panels have to be cleaned In the lower right corner of the receiver window pane the red err...

Страница 99: ...Raw data telegram format 46 Table 13 Dimensions in NetCDF 49 Table 14 Variables in NetCDF 49 Table 15 Global attributes in NetCDF 52 Table 16 Service codes status bits 54 Table 17 Format of reported b...

Страница 100: ...Revision R09 November 2016 100 Declaration of Conformity...

Страница 101: ...cheele Strasse 16 12489 Berlin Germany Phone 49 711 51822 831 Fax 49 711 51822 944 Lufft North America Lufft USA Inc 1110 Eugenia Pl Unit B Carpinteria CA 93013 USA Phone 01 888 519 8443 Fax 01 805 84...

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