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Operating Manual CHM 15k

R13 / 07-2019

Installation

18

Position the CHM 15k in the installation position (vertical) on the concrete foundation.
It is important to

pay attention to the position of the exterior door in relation to the operator’s

connection box (see Figure 4)

Loosely pre-assemble the CHM 15k on the concrete foundation with the supplied washers
and fixing screws (see Figure 9)

Figure 9

Fixing elements.

1 Dowel S12

2 Leveling screw 5 mm (integrated into the base of the device)

3 Screw DIN 571-10 x 140-ZN

4 Washer ISO 7093-10.5-A2

5 Washer ISO 7093-10.5-KST/PA

6 Concrete foundation

Vertically align the CHM 15k using the levelling screws integrated into the base of the device
(with a spirit level: place on one side wall and on the front)

Tighten the fixing screws (nuts)

Remove the handle protection (edge protection profile) from above and secure in the base
for the next transport

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Содержание CHM 15k

Страница 1: ...General Information 1 Titelseite...

Страница 2: ...rol and device status 13 5 Transport Scope of Delivery 14 6 Installation 15 6 1 Installing the CHM 15k 15 6 1 1 Preparatory work 15 6 1 2 Installing on the foundation 16 6 2 Electrical installation 19...

Страница 3: ...8 9 Telegram via Ethernet 55 8 10 NetCDF file tools 55 9 Data Evaluation Sky Condition Algorithm SCA 56 9 1 Laser remote sensing 56 9 2 Preparation of the measured data 56 9 3 Cloud ceilings cloud bas...

Страница 4: ...8 22 41 E mail service lufft de Date Revision Firmware Notes March 2014 IO 0 723 previous Jenoptik release December 2014 R04 0 730 cloud algorithm optimized in precipitation cases parameter in RS485 w...

Страница 5: ...eflecting materials The laser radiation emitted by the sensor is generated by an embedded Class 3B laser Even short exposure to Class 3B laser radiation can lead to injuries to the eye and skin Mainte...

Страница 6: ...l the CHM 15k in hazardous locations 2 5 Description of the warnings 2 5 1 Description of warning symbols Symbol Use Warning of a general hazard Warning of laser beam Warning of dangerous electrical v...

Страница 7: ...a public low voltage network in accordance with IEC38 6th edition 1983 The ceilometer may be used only in a protected outside area In standard operation the laser beam is aligned to the zenith i e the...

Страница 8: ...t Resolution measured 5 m NetCDF data resolution 5 m 30 m in 5 m steps can be set by the user 15 m default setting NetCDF high resolution data 5 m defined for limited HR vector of data Logging time an...

Страница 9: ...ge 40 C to 50 C Relative humidity 0 100 Wind 60 m s Maximum operating altitude 2000m Dimensions Enclosure dimensions footprint x height W x H x L 0 5 m x 0 5 m x 1 55 m Packaging dimensions W x H x L...

Страница 10: ...mited due to file size and processing time Example 15 m resolution over 15 km range with 15 s resolution 24 MB daily file size is our standard operating mode a combination of 5 m range resolution over...

Страница 11: ...can be replaced refreshed at the end of the laser diode lifetime A device designed for 24 7 continuous operation 4 1 Construction of the CHM 15k The enclosure of the CHM 15k is made of corrosion resi...

Страница 12: ...rotection device for power cable LAN RS485 The functional units are of modular design fastened separately to the inner housing and can be removed and replaced individually for servicing purposes 4 2 1...

Страница 13: ...out and controlled with higher time resolution such as the temperature control or that run in the logging time interval such as the evaluation of the window contamination and the fan controller in ca...

Страница 14: ...o User manual and USB stick with communication software Fastening components o 4 dowels S12 Fischer Co o 4 screws M10 x 140 ZN DIN 571 o 4 washers ISO 7093 10 5 KST PA o 4 washers ISO 7093 10 5 A2 On...

Страница 15: ...t be selected such that leaves and needles do not reach the light emission apertures of the device When installing the CHM 15k the following minimum distances must be observed to radio devices 2 5 m t...

Страница 16: ...are required to install the ceilometer Install the CHM 15k ceilometer as follows Unload the CHM15k from the transport equipment and set it down as close as possible to the place of installation Figur...

Страница 17: ...e protection profile Onward transport options To carry Grasp the equipment in the openings marked with arrows Figure 7 Hand truck For greater distances to the concrete foundation Figure 8 NOTICE When...

Страница 18: ...ed washers and fixing screws see Figure 9 Figure 9 Fixing elements 1 Dowel S12 2 Leveling screw 5 mm integrated into the base of the device 3 Screw DIN 571 10 x 140 ZN 4 Washer ISO 7093 10 5 A2 5 Wash...

Страница 19: ...or C The connection box should be installed at a distance of 3 m An external lightning conductor 5 must be installed to protect the device from direct lightning strikes All connections to the device m...

Страница 20: ...onductor green green yellow Figure 11 Electrical installation L N PE br bl gn ye circuit breaker safety guard po er supply C aptop A B GND gn ye or SB serial converter optional overvoltage protection...

Страница 21: ...5 GND white brown shielding as required see Figure 13 standard length 10 m Figure 13 RS485 connection to transducer 4 Data cable LAN equipped with a standard RJ45 plug for connection to a remote compu...

Страница 22: ...length depending on outdoor temperature conditions The time until measurement data are available in high quality can be between 2 minutes warm start and one hour cold start at 40 C The CHM15k automat...

Страница 23: ...be set to at least 19 200 baud 7 2 Starting up with the LAN connection In addition or as an alternative to the RS485 connection a LAN connection Ethernet can also be used Requirement A connected LAN...

Страница 24: ...queried by the user via RS485 too using the parameter IPS instead of IPD e g get SPACE RS485Number IPS CR LF set SPACE RS485Number IPS xxx xxx xxx xxx CR LF For further support regarding communicatio...

Страница 25: ...tice Disposal of the CHM 15k ceilometer must be in accordance with national regulations Electrical equipment marked with this symbol may not be disposed of in European domestic or public disposal syst...

Страница 26: ...mmands as described in 8 1 The incoming start and end flags STX and EOT indicate a current receive transmission 8 1 List of configurable parameters Table 4 contains the most important settings These a...

Страница 27: ...5 600 s Gateway GAT 0 0 0 0 Set queries the static gateway address HardwareVersion HWV Device dependent see Table 23 HttpPort HPT 80 Specifies http port to access the web interface of the ceilometer...

Страница 28: ...set to the factory settings see 8 2 4 web interface set to factory setting RestartNetwork RSN 0 0 1 writes the new settings in the configuration file and restarts the network RS485Number RNO 16 0 99 u...

Страница 29: ...Firmware FPGA VersionLinux VLI Operating system version Table 5 List of read only parameters accessible via the RS485 interface RS485 only for RS485 available Explanatory notes to Table 4 AFDMode Swit...

Страница 30: ...nds to 13 24 30 E MaxCrossTalkChars The number of characters the CHM 15k will ignore within the time interval TimeOutRS485 s if not ended with EOT 04 HEX CR 0D HEX LF 0A HEX The parameter is included...

Страница 31: ...m to 8 3 5 Raw data telegram 8 2 2 Setting a parameter A configuration parameter is changed via the command set SPACE RS485Number ParameterName Value CR LF A successful change is confirmed with STX se...

Страница 32: ...The command set SPACE RS485Number Reset 1 CR LF instructs the internal processor to perform an immediate restart This restart takes less than one minute Communication with the CHM 15k is not possible...

Страница 33: ...ransferMode 0 CR LF sets the polling mode and thereby any previously running automatic telegram output is issued With the three commands get SPACE RS485Number S CR LF get SPACE RS485Number L CR LF get...

Страница 34: ...7 SPACE 20 HEX 8 10 Output interval s 11 SPACE 20 HEX 12 19 Date dd mm yy 20 SPACE 20 HEX 21 25 Time hh mm 26 SPACE 20 HEX 27 31 Cloud base layer 1 see section 9 3 32 SPACE 20 HEX 33 37 Cloud base lay...

Страница 35: ...ith a minus sign or slash Detailed information on the type of device error can be found in the status codes see 8 5 Status code Correction of the measured cloud height The cloud height is usually meas...

Страница 36: ...t in m or ft 87 3B HEX 88 89 Precipitation index Sky Condition Index SCI 90 3B HEX 91 98 System status 32 Bit status code see 8 5 Status code 99 3B HEX 100 101 RS485 identification number CHM 15k in t...

Страница 37: ...height 189 3B HEX 190 195 Laser operating hours h 196 3B HEX 197 199 Window status 200 3B HEX 201 205 Laser frequency PRF 5 digits 206 3B HEX 207 209 Receiver status 210 3B HEX 211 213 Light source st...

Страница 38: ...pulses in the measuring interval 7 digit Receiver status Evaluation of the status of the optical path and receiver 100 maximum sensitivity 0 no sensitivity Light source status Evaluation of the stabi...

Страница 39: ...2 M CR LF Line 3 M CR LF Line n 2 M CR LF Line n 1 E CR LF Line n end CR LF The character indicates a UUencode ASCII character in the range HEX 21 60 The M HEX 4D at the beginning of the data lines s...

Страница 40: ...ncing in this mode Because the transmission rate depends on the time resolution of the measured data and the RS485 interface settings this transmission would take too long A one day NetCDF file with d...

Страница 41: ...obal attributes Attribute Description Type title Heading for graphical representation here Lufft Berlin CHM 15 Text source see device_name left for compatibility reasons Text device_name Serial number...

Страница 42: ...length of range gate with high resolution binwidth life_time int time h laser life time error_ext int time 32 bit status code state_laser byte time percent laser quality index state_detector byte time...

Страница 43: ...cloud cover bcc byte time base cloud cover sci byte time sky condition index 0 nothing 1 rain 2 fog 3 snow 4 precipitation or particles on window vor short time m vertical optical range voe short time...

Страница 44: ...APD bias 4 10 Error Error Create new NetCDF file 5 20 Error Error Write add to NetCDF error 6 40 Error Error RS485 telegram cannot be generated and transmitted 7 80 Error Error SD card absent or defec...

Страница 45: ...us code For example information warnings and errors relating to temperatures group 3 are in the third place from the right i e xxxxxTxx In each group only the highest priority error the highest error...

Страница 46: ...n best performance range setpoint 1 C 3 C 60 xxxx x3xx Laser optical module LOM temperature outside the valid range 25 C 49 C 60 xxxx x4xx Internal temperature outside the working range 5 C 50 C 16 xx...

Страница 47: ...xxx Values from detector signal zero or void 16 xx7x xxxx Insufficient test laser signal available 16 xx8x xxxx No window pulse in receiver signal 16 xxDx xxxx No receiver signal detector or HV supply...

Страница 48: ...loading full day NetCDF raw data In general the web interface contains the following access rights End users can check the status of the instrument Superusers can download NetCDF files configure the d...

Страница 49: ...Figure 17 Web interface NetCDF Files superuser Figure 18 shows the contents of the Viewer tab displaying the existing data for the last 24 hours at 5 minute intervals Clicking the Update button updat...

Страница 50: ...ages Config System Config Network and Config RS485 are only accessible to superusers and service users The parameters can also be set via RS485 communication and are described in 8 1 Figure 19 Web int...

Страница 51: ...e should be carefully installed See 8 8 AFD mode for further information Figure 21 shows the contents of the Config System tab which allows access to parts of the system Figure 21 Web interface Config...

Страница 52: ...5 configuration service mode 8 7 4 Status and error messages process warnings The upper part of the Process Warnings tab of Figure 24 is mainly used by the Lufft service in a second or third level sup...

Страница 53: ...d immediately Please note The user should avoid time settings via the date time command RS485 with simultaneous execution of ntpd over TCP IP 8 8 AFD mode A specific communication mode called automati...

Страница 54: ...ory from root on server home chm_data user name afd password eXample recipient ftp afd eXample 192 168 1 51 home chm_data h tY tm options priority 9 create target dir time 15 lock DOT age limit 3600 e...

Страница 55: ...loaded and installed from the server https nmap org download html This website also provides binary and source codes for other operating systems After a connection request from the client in the polli...

Страница 56: ...rom the travelling time of the laser pulses 9 2 Preparation of the measured data Data pre processing is an important task before the different steps in the SCA algorithm begin The main reason for this...

Страница 57: ...penetration depths Cloud penetration depth is determined by detecting a cloud bottom and then an upper cloud height using the signal intensity level that was determined for the cloud base Subtracting...

Страница 58: ...d independently of the cloud detection algorithm and can be used to check the result e g if the ceilometer can detect neither a cloud layer nor a vertical optical range Here the MXD can be used to che...

Страница 59: ...accuracy and low uncertainty Q Index Description telegram 1 NetCDF There is insufficient raw data for a calculation telegram 2 NetCDF Hardware error or system is not ready to measure telegram 3 NetCDF...

Страница 60: ...DF 3 NetCDF Cloud bases could not be determined due to fog or other non meteorological reasons or no observation was made 0 Clear sky 1 1 okta 1 10 2 10 2 2 okta 2 10 3 10 3 3 okta 4 10 4 4 okta 5 10...

Страница 61: ...9 Data Evaluation Sky Condition Algorithm SCA 61 Figure 29 Degree of coverage algorithm Note The selected time interval for calculating the cloud cover depends on the area in which a truncated cone fu...

Страница 62: ...was treated as a precipitation index Table 20 shows how the index is defined Value Description 2 NetCDF System hardware error or system not yet ready for operation 2 in NetCDF 00 Neither fog nor prec...

Страница 63: ...left corner of the windows indicates the mains voltage is switched on When the device is turned on this LED must be lit If this is not the case this indicates an unconnected cable a switched off circ...

Страница 64: ...the housing cover Neutral cleaning agents microfiber cloths As required Remove fouling in front of the entrance grilles of the fans rear side Keep fan intake area clear see Figure 31 As required Remov...

Страница 65: ...re against reconnection Table 22 lists the recommended preventive maintenance measures and the interval for regular checks The inner sensor housing door must be opened to carry out the maintenance mea...

Страница 66: ...f only 3 to 5 years Replace LOM if signs of laser wear falling repetition rate replace SD card By service staff only Approx every 5 years As a preventive measure Replace the rubber seal of the inner d...

Страница 67: ...alue not set 11 2 CHM 15k software version This manual corresponds to firmware version 1 020 of September 2019 for the CHM 15k ceilometer OS FPGA release Description Released OS 12 12 1 FPGA 2 13 CPU...

Страница 68: ...DeviceName is preserved at reset settings to factory defaults 4 Apply settings to factory defaults removed in web interface will be redesigned and reintegrated in future May 2015 0 733 1 mainboard re...

Страница 69: ...ion e g software_version 17 05 1 2 13 0 747 1 for Mode 1 2 Cloud detection variant higher low clouds introduced useable with new settings CloudDetectionMode 1 RS485 short CDM Restart need after changi...

Страница 70: ...ownload of different settings files chm afd telegram fixed 8 Fix in Cloud Detection to version 0 727 Dimension Check Sep 2018 1 010 1 Improvement of the handling of the APD temperature read error 2 Co...

Страница 71: ...shown here with fixed IP address 24 Figure 16 Web interface 48 Figure 17 Web interface NetCDF Files superuser 49 Figure 18 Web interface Viewer 49 Figure 19 Web interface Config Network read only defa...

Страница 72: ...38 Table 11 Baud rate logging time restrictions 39 Table 12 Raw data telegram format any desired character 39 Table 13 Dimensions in NetCDF 41 Table 14 Global attributes in NetCDF 41 Table 15 Variable...

Страница 73: ...Index of Tables 73...

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