Operating instructions Present Weather Sensor Parsivel
Contents
1. On IR B 9 FE JAH I eG Sx t 120 Bl R 120 sO e eg Qa eG from 20 m of cable length Interface converter Parsivel RS 485 USB PThe Parsivel is configured at the factory for 2 wire communication To switch the Parsivel from 2 wire communication to 4 wire communication proceed as des cribed in Chapter 8 1 Connecting the Parsivel to an RS 485 RS 232 Interface Converter Accessories Fig 21 Connecting Parsivel via the Service Tool to a PC Fig 22 Jumper settings inside the interface converter 8 4 Connecting the Parsivel to any RS 485 Interface Converter When using an interface converter that can not be purchased as an accessory from OTT Messtechnik the following must absolutely be adhered to Interface converters must be configured in the automatic send receive control mode for 2 wire connections through software commands without hardware handshake cables and Echo Off The interface converter must be galvanically separated 8 5 Connecting the Parsivel for configuration via the Service Tool to a PC Please test and configure Parsivel according to your requirements regarding inter face mode heater on off and protocol string before exposing Parsivel into the field Apply therefor the P2. Parsivel Fig 16 Connecting the Parsivel to interface converters RS 485 RS 232 in 2 wire communication 8 Connecting the Parsivel to a PC The Parsivel contains an RS 485 interface Depending on whether your PC has an RS 232 or USB interface a corresponding interface adapter must be used that provides automatic conversion between the Parsivel and the PC Here we recom mend using the two interface converters or the Service Tool from our list of acces sories To connect the Parsivel to your PC proceed as follows Connect the RS 485 interface of the Parsivel to the interface adapter used see chapter 8 1 8 2 or 8 3 Connect the interface adapter to the PC Start the Parsivel Software ASDO or a terminal programm on the PC such as Hyperterminal Configure and operate Parsivel with the Parsivel software ASDO see also manual Parsivel software ASDO or alternatively with a terminal software see also chapter 8 Operating Parsivel with a terminal software 8 1 Connecting the Parsivel to the Interface Converter RS 485 RS 232 Accessories The RS 485 RS 232 interface converter accessories can be set for 2 wire communication as well as to 4 wire communication Setting the dip switches at the RS 485 RS 232 interface converter Set the internal dip switches at the interface converter as follows Operating mode 1 2 3 4 5 6 7 B RS 485 4 wire
3. Parsivel 25 26 Fig 19 Connecting the Parsivel to an RS 485 USB interface converter in 2 wire communication Fig 20 Connecting the Parsivel to an RS 485 USB interface converter in 4 wire communication 8 3 Connecting the Parsivel to the Interface Converter RS 485 USB Accessories The RS 485 USB interface converter can be set for 2 wire communication as well as to 4 wire communication Setting the dip switches at the RS 485 USB interface converter Set the external dip switches at the interface converter as follows Operating mode 1 2 3 4 RS 485 4 wire on off off off 2 wire without echo off off on on Automatic control 2 wire communication The Parsivel is configured at the factory for 2 wire communication Connect the Parsivel as follows to the 6 pin terminal of the interface converter N Rm Ge R 1200 I N G Se F TAY eQ G i R 120 gt O o Qs eG G from 20 m of cable length Interface converter Parsivel RS 485 USB 4 wire communication Connect the Parsivel as follows to the 6 pin terminal of the interface converter for 4 wire communication
4. gt 0 5 68 69 Snow Intensity Rain rate mm h Tab 4680 Tab 4677 light lt 0 5 71 71 moderate 0 5 4 0 72 73 strong 4 0 73 75 Snow grains Intensity Rain rate mm h Tab 4680 Tab 4677 light lt 0 5 77 77 moderate 0 5 4 0 77 77 strong 4 0 77 77 Freezing rain Intensity Rain rate mm h Tab 4680 Tab 4677 light lt 0 4 87 87 moderate gt 0 4 88 88 Hail Intensity Rain rate mm h Tab 4680 Tab 4677 light lt 75 89 89 moderate gt 7 5 89 90 45 C 2 Precipitation code according to the NWS and METAR SPECI w w Table 4678 The definitions of the precipitation codes below are listed according to the following tables NWS METAR SPECI ww Table 4678 Drizzle Intensity Rain rate mm h NWS Tab 4678 light 0 2 L DZ moderate 0 2 0 5 L DZ strong gt 0 5 L DZ Drizzle with rain Intensity Rain rate mm h NWS Tab 4678 light 0 2 RL RADZ moderate 0 2 0 5 RL RADZ strong gt 0 5 RL RADZ Rain Intensity Rain rate mm h NWS Tab 4678 light lt 0 2 R RA moderate 0 5 7 5 R RA strong 27 5 R RA Rain drizzle with snow Intensity Rain rate mm h NWS Tab 4678 light lt 0 5 RLS RASN moderate gt 0 5 RLS RASN strong RLS RASN Snow Intensity Rain rate mm h NWS Tab 4678 light lt 0 5 5 SN moderate 0 5 2 5 S SN strong gt 25 5 SN Snow grains Intensity Rain rate mm h NWS Tab 4678 light lt 0 5 SG SG moderate 0 5 4 0 SG SG strong gt 4 0 SG 56 Freezing rain In
5. 0 750 0 100 9 0 850 0 100 10 0 950 0 100 11 1 100 0 200 12 1 300 0 200 13 1 500 0 200 14 1 700 0 200 15 1 900 0 200 16 2 200 0 400 17 2 600 0 400 18 3 000 0 400 19 3 400 0 400 20 3 800 0 400 21 4 400 0 800 22 5 200 0 800 23 6 000 0 800 24 6 800 0 800 25 7 600 0 800 26 8 800 1 600 27 10 400 1 600 28 12 000 1 600 29 13 600 1 600 30 15 200 1 600 31 17 600 3 200 32 20 800 3 200 Appendix C Characterization of precipitation type by precipitation codes From the classification of precipitation particles Parsivel calculates the rain rate The type of precipitation is based on the number of particles within the measure ment range and the precipitation code is determined from the precipitation inten sity R in mm h of an equivalent amount of water C 1 Precipitation code according to SYNOP The definitions of the precipitation codes below are listed according to the follow ing tables SYNOP ww Table 4680 SYNOP ww Table 4677 Drizzle Intensity Rain rate mm h Tab 4680 Tab 4677 light lt 0 2 51 51 moderate 0 2 0 5 52 53 strong gt 0 5 53 55 Drizzle with rain Intensity Rain rate mm h Tab 4680 Tab 4677 light lt 0 2 57 58 moderate 0 2 0 5 58 59 strong 20 5 58 59 Rain Intensity Rain rate mm h Tab 4680 Tab 4677 light lt 0 2 61 61 moderate 0 5 4 0 62 63 strong 4 0 63 65 Rain drizzle with snow Intensity Rain rate mm h Tab 4680 Tab 4677 light lt 0 5 67 68 moderate
6. 00 00_ 20 Sensor time 8 00 00 00 21 Sensor date 10 00 00 0000 22 Station name 10 XXXXXXXXXX 23 Station number 4 XXXX 24 Rain amount absolute 32 bit 7 000 000 mm 25 Error code 3 000 30 Rain intensity 16 bit 6 00 000 mm h 31 Rain intensity 12 bit 6 0000 0 mm h 32 Rain amount accumulated 16 bit 7 0000 00 mm 33 Radar reflectivity 16 bit 5 00 00 dBz 90 Field N d 223 00 000x 1 m3 mm 91 Field v d 223 00 000x 93 Raw data 4095 000x The measurement value number must be selected based on the data logger used along with the corre sponding number of bits 11 3 Defining the formatting string There are various strings available to tailor the format of the existing data protocol to your individual requirements These must be individually assigned to each mea surement number in the data telegram Formatting control codes String Meaning n Line feed r Return s Start transmission e End transmission Formatting individual measured values String Meaning 04 Output measured value No 4 Formatting fields String Meaning 90 Output data field no 90 with as a separator Other signs can be used as well as a separator 11 4 OTT telegram The following telegram configuration has been preset at the factory 9 13 01 502 03 07 08 12 10 11 18 According to this configuration measured values are displayed as in the fol lowing example 200248 000 000 0000 00 00 9 999 99
7. ASDO must be set to the sample inter val of the SDI 12 data logger see the operating instructions for the Parsivel appli cation software ASDO Warning The failure of the SDI 12 master will result in losing the connectivity in parallel operation with ASDO In order to operate the Parsivel simultaneously with the Parsivel software ASDO and an SDI 12 data logger proceed as follows Connect the Parsivel to the RS 485 USB interface converter via the 2 wire connection Connect the LogoSens to the Parsivel via the SDI 12 interface Data Interface Power supply logger converter 11 36 V DC a 36 V DC GND 11 y 6 B5B 4 8 ES 1 GGG Gi Gi Parsivel 7 3 Connecting the Parsivel to a Data Logger with Impulse Status Input To be able to utilize the impulse and status output of the Parsivel it is necessary for the 2 wire connection to be activated The Parsivel is already configured at the factory for 2 wire connection In case it has been reconfigured since its startup to a 4 wire connection or an SDI 12 connection these connections must be deactiva ted with the help of a terminal software program see Chapter 11 Operating Par sivel using Terminal Software Use the following commands to accomplish this Deactivating the 4 wire connection CS C 4 0 lt CR gt Deactivating t
8. The Parsivel contains an embedded class 2 laser device and is a class 1 1M laser product which complies with IEC EN 60825 1 A2 2001 EU 21CFR 1040 10 and 1040 11 USA with the exception of laser notice LN50 Wavelength 650 nm output max 3 mW Do not open the instrument and remove any barrier that would expose to laser beam of embedded laser class 2 device Do not stare into the beam or view directly with optical instruments Optical light barriers must never be removed except by OTT Service personnel When barriers are removed power to the Parsivel must be disconneted LOTT Parsivel AA SN XXXXXX CE X CLASS 1 LASER PRODUCT 650 nm Complies with 21 CFR 1040 10 and 1040 11 with the exception of laser notice LN50 Visible Laser Radiation Do not view directly with optical instruments CLASS 1M LASER PRODUCT IEC EN 60825 1 A2 2001 Sichtbare Laserstrahlung Nicht direkt mit optischen Ger ten hineinschauen www ott hydrometry com Made in Germany Fig 1 Functional principle of the Parsivel 5 Introduction Parsivel is a laser based optical system for complete and reliable measurement of all types of precipitation The size range of measurable liquid precipitation par ticles is from 0 2 5 mm for solid precipitation particles it is from 0 2 25 mm In the process precipitation particles can have a velocity of from 0 2 20 m s The precipitation particles are categorized as follows Drizzle Drizz
9. essary that they be read by the assembler and by the responsible technical per sonnel operator prior to installation and startup These operating instructions must be accessible at the point of use of the mea surement device Personnel responsible for installation operation and maintenance must have the appropriate qualifications for this work Responsibilities competency and the monitoring of personnel must be closely controlled by the owner If personnel do not have the required knowledge it must be provided through training and instruction If necessary OTT MESSTECHNIK can provided this service on a contractual basis for the owner Non adherence to these safety instructions can have dangerous consequences for persons as well as for the measurement device Non adherence to these safety instructions can result in the loss of any indem nity claims Please adhere to the safety instructions listed in these operating instructions to all existing national accident prevention regulations and to any internal work operating and safety rules as set forth by the owner The operating safety of the delivered measuring device is only guaranteed when it is used properly Retrofitting or changing the measuring device is only allowed if authorized by the manufacturer To ensure safety buy only original replacement parts and accessories autho rized by the manufacturer Use of other parts can void liability for any conse quences arising therefrom
10. flush with the inner wall inside the socket Place the lock washers cable lug and washer as shown in Fig 6 onto the grub screw from the outside Likewise screw the hex nut from outside onto the grub screw and tighten it Hold the grub screw from the inside using the hex key while doing so so that it does not rotate during tightening Loosen the two copper screws of the cable lug by rotating them a few turns Remove the insulation from one end of the grounding cable approximately 2 cm Insert the un insulated end of the grounding cable between the two plates of the cable lug and re tighten the two copper screws The other end of the cable must be properly grounded near the Parsivel up Lock washers flat washer p Hex nut US Ka 5 Hex key JS Grounding hole p Grub screw A Coble lug Copper screws 13 14 Fig 7 Installing the Parsivel 6 4 Installing the Parsivel Proceed as follows to install the Parsivel Slide the attached Parsivel downward onto the pipe Orient the Parsivel such that the laser beam is perpendicular to the local main wind direction Evenly tighten the 6 M 8 x 16 grub screws or M 8 x 25 depending on the dia meter of the pipe stand using the 4 mm hex key provided installation set so that the sensor head is horizontal as much as possible Fig 8 Connecting the Parsivel to the LogoSens via the RS 485 interface 7 Connecting the Parsive
11. range 0 1 Standard 0 Description 0 RS 485 bus mode deactivated 1 RS 485 bus mode activated Address query lt CR gt answer lt address gt lt CR gt lt LF gt CS C A lt parameter gt lt CR gt Set bus address for RS 485 bus mode Warning Changing the bbus address can cause the loss of the connectivity Value range 0 9 Standard 0 CS T 12 00 00 lt CR gt Adjust time of day The time of day of the Parsivel is set to the time of day of the PC CS D 01 01 2000 lt CR gt Adjust date The date of the Parsivel is set to the calendar of the PC CS S E lt parameter gt lt CR gt Set SDI 12 mode Activate or deactivate the SDI 12 mode Value range 0 1 Standard 0 Description 0 SDI 12 mode deactivated 1 SDI 12 mode activated CS S A lt parameter gt lt CR gt Set bus address for SDI 12 bus mode This command sets the bus address for the SDI 12 bus mode Value range 0 9 Standard 0 CS K xxxxxxxxxx lt CR gt Input station name This command allows a user specific station name to be used This name can encompass a maximum of 10 characters CS K PWS00001 lt CR gt Station name PWS00001 CS J xxxx lt CR gt Assign sensor ID This command assigns a 4 digit sensor ID CS M M lt parameter gt lt CR gt Select data telegram The data telegram can be input in the command with the parameters O 1 Value range 1 Standard 0 Description 0 OTT telegram
12. supply 11 36 V DC GND P 5 ea a 72 36 V DC GND 11 y 9 Aid GO o Gi Parsivel 17 Connecting the Parsivel to the LogoSens Station Manager via the SDI 12 Interface Connect the Parsivel to the LogoSens via the SDI 12 interface as shown in Fig 11 Fig 11 Connecting the Parsivel to the LogoSens via the RS 12 interface LogoSens LogoSens AR Power supply 11 36 V DC 9999 859909 234 12 3 A B 8 E S 5 SE o o 1 6 5 4 3 2 1 ooooooQ0 Parsivel Configuring the LogoSens Station Manager for SDI 12 communication In order to call up and store data from the Parsivel using the LogoSens a configu ration must be created in the LogoSens Figure 12 shows an example LogoSens configuration for communication via the SDI 12 interface See operating instruc tions of LogoSens Station Manager for more on this Make sure that the measu rement cycle set up in all Parsivel channels is provided with the same value and that in no channel of the LogoSens configuration an instantaneous vaue is defined otherwise erroneous measurements are possible Fig 12 LogoSens Confi
13. 1 User telegram CS M S lt CR gt STRING gt lt parameter gt lt CR gt Set formatting string You can create a data telegram that is optimized according to your needs This command sets the formatting string The formatting string is placed in the lt para meter spot see also Chapter 11 3 Defining the formatting string CS Z 1 lt CR gt Restart sensor reset the rain amount CS L lt CR gt Output current configuration 41 42 CS 2 lt CR gt This command outputs the command list CS H M lt parameter gt lt CR gt This command adjusts the operating mode of the heating system Value range 0 3 Standard 0 Description 0 Off 1 Automatic 2 Lone 3 ES CS H X lt parameter gt lt CR gt Adjust I This command sets the maximum current through the heating system Value range 0 200 1 100A Standard 200 224 CS H N parameter CR Adjust LA This command sets the minimum current through the heoting system Value range 0 200 1 100A Standard 15 20 15 A CS H T parameter CR Set minimum temperature of the sensor heater This command sets the minimum temperature to which the sensor is heated Value range 40 85 C Standard 10 Appendix B Classification of precipitation types After determining the volume equivalent diameter D and the particle speed V Parsivel subdivides the particles into appropriate classes The scale of this classi
14. 2 wire without echo on on off on off off off off Automatic control without bus termination 2 wire communication The Parsivel is configured at the factory for 2 wire communication Connect the Parsivel as follows to a 9 pin Sub D socket female On SE Qo E a S At S S 1 B u e e e O S G Interface converter from 20 m of cable length RS 485 RS 232 Parsivel solder side 23 24 Fig 17 Connecting the Parsivel to an RS 485 RS 232 Interface Converter for 4 wire communication 4 wire communication Connect the Parsivel as follows to a 9 pin Sub D socket female for 4 wire communication On O 4 OUT S A OUT R 12000 p WII 8 R 120 Oo Bt IN Ss S from 20 m of cable length Interface converter RS 485 RS 232 Parsivel Solder side The Parsivel is configured at the factory for 2 wire communication In order to switch the Parsivel from 2 wire communication to 4 wire communication proceed as follows Connect the cables as described in Figure 17 to the 7 slot screw terminal of the Parsivel installation set scope of deliv
15. 85 4 wire A IN RS 485 4 wire B Out RS 485 4 wire A Out Power supply 11 11 12 Fig 4 Connection Assignment for a 2 wire connection with RS 485 of SDI 12 transfer Fig 5 Plug the screw terminal strip onto the Parsivel sensor head Parsivel GC SES gt O AS O oO H CC a 3280 z 5 2 gt 0 a of Go oW E e a FABER 2 SS oe dq D X gt X Z N a E 5 o a o a Plug the screwed terminal strip onto the sensor head as shown in Figure 5 Re fasten the bottom cover of the sensor head using the two Allen screws Tighten the screwed cable connection Connect the shielding to the corresponding power supply Fig 6 Grounding the Parsivel The individual parts to fasten the cable lug are included in the installation set 6 3 Grounding the Parsivel To ground the Parsivel you will need the following parts from the installation set provided 1 hex key 4 mm 1 M 8 X 25 grub screw 2 lock washers 1 cable lug 1 flat washer 1 M8 hex nut Also you will need a grounding cable with a wire cross section of 16 mm In order to ground the Parsivel proceed as follows Rotate the grub screw using the hex key from inside into the grounding hole see Fig 6 until the grub screw is
16. 99 OT 5759 00000 0 According to the table in chapter 11 2 the data protocol is thus defined as follows Meas value No Meas value Definition 13 200248 Sensor serial number 01 000 000 Rain intensity 02 0000 00 Rain amount since start of device 03 00 Weather code according to SYNOP see appendix C Categorization of precipiation type by precipitation codes 07 9 999 Radar reflectivity 08 9999 MOR visibility in the precipitation 12 025 Temperature in the sensor 10 15759 Signal amplitude of the laser strip 11 00000 Number of detected particles 18 0 Sensor status 33 34 Fig 25 Send file Window Fig 26 Xmodem file send for Parsivel window 11 5 Updating Parsivel Firmware OTT Messtechnik provides the latest update versions to OTT software on its internet site at www ott hydrometry de under the rubric Software Updates Two files are needed to update the Parsivel firmware IOP BIN DSP BIN where represents the respective version number To update the Parsivel firmware proceed as follows Connect your PC to the Parsivel via the corresponding interface converter as described in Chapter 8 Load the newest update of the Parsivel firmware onto your computer from the OTT homepage Start a terminal software program on your PC and make the corresponding settings as described in Chapter 11 1 Setting up Communication between Par sivel and Terminal Software After Parsivel
17. Operating instructions Present Weather Sensor Parsivel We reserve the right to make technical changes Table of contents 2 3 10 11 12 13 14 Scope of delivery Part numbers Parsivel Factory Settings Safety instructions Introduction 5 1 Functional principle 5 2 Connection Options for the Parsivel Installing the Parsivel 6 1 Cable Selection 6 2 Wiring the Parsivel 6 3 Grounding the Parsivel 6 4 Installing the Parsivel Connecting the Parsivel to a data logger 7 1 Connecting the Parsivel to the LogoSens Station Manager via RS 485 interface 7 2 Connecting the Parsivel to a Data logger via the SDI 12 Interface 7 3 Connecting the Parsivel to a Data Logger with Impulse Status Input Connecting the Parsivel to a PC 8 1 Connecting the Parsivel to Interface Converter RS 485 RS 232 Accessories 8 2 Connecting the Parsivel to the ADAM 4520 Converter RS 485 RS 232 Accessories 8 3 Connecting the Parsivel to Interface Converter RS 485 USB Accessories 8 4 Connecting the Parsivel to any RS 485 Interface Converter 8 5 Connecting the Parsivel for configuration via the Service Tool to a PC Connecting the Parsivel to a Power Supply Accessory Heating the Parsivel sensor heads Operating Parsivel with a Terminal software 11 1 Set up communications between the Parsivel and the terminal program 11 2 Measured value numbers 11 3 Defining the formatting string 11 4 OTT telegram 11 5 Updating Parsivel Firm
18. SPECI w w table 4678 differentiation of the precipitate types driz zle rain hail snow gt 97 accurate com pared to a weather observer Measurement range MOR 100 5 000 m 0 001 mm h drizzle rain 1200 mm h 5 Microprocessor controlled heating 11 36 V DC reverse polarity protection Optimum heating output of the sensor head heating system can be guaranteed with a power supply voltage of at least 20 V DC max 2 A RS 485 EIA 485 1 200 57 600 Baud half duplex 2 wire RS 422 1 200 57 600 Baud half duplex 4 wire SDI 12 Parsivel has an output relay for simple sta tus information rain or snow and or impulse output for precipitation in 0 1 mm increments with max 2 Hz impulse rate meets EN 61000 4 2 up to EN 61000 4 6 10 V m 2 kV for EMV requirements CE compliant integrated Galvanized aluminum housing max 5 kg 40 70 C 0 100 relative humidity IP 65 resistant to salt spray 370 x 560 x 120 mm 39 40 Appendix A CS Command Set CS F 1 lt CR gt With this command all factory settings can be recreated CS I parameter CR Adjust sample interval and start transfer In automatic mode the sample interval can be adjusted in seconds with this com mand After confirmation of the command the first data set is output Value range 0 10 3600 Standard 30 If the value O is entered for the sample interval the Polling mode is active CS P lt CR
19. a data logger is used that is connected via an SDI 12 interface the data logger functions as a master and specifies the measurement time and sample interval of the Parsivel The measurement time must be 1 min in this case in order for the Parsivel to collect sufficient data during winter operation as well to allow for the precise assignment of precipitation type To make the Parsivel capable of communicating for an SDI 12 interface the Parsi vel must first be connected to a PC via the RS 485 interface The SDI 12 interface can be switched to active through the Parsivel application software ASDO or using a terminal program and the command CS S E 1 lt CR gt see operating instructions for the Parsivel application software ASDO and Chapter 11 Parsivel Operated through Terminal Software Warning The failure of the SDI 12 master will result in losing the connectivity in parallel operation with ASDO SDI 12 Data Formats Value 0 Rain intensity mm h Value 1 Rain amount accumulated mm Value 2 Weather code according to SYNOP w w table 4680 Value 3 Radar reflectivity dBz Value 4 MOR visibility during precipitation m Value 5 Sample interval s Value 6 Signal amplitude of the laser strip 1 Value 7 Number of detected particles 1 Connecting the Parsivel to any Data logger via the SDI 12 Interface Connect the Parsivel to any data logger as shown in Fig 10 via the SDI 12 inter face Data logger Power
20. arsivel software ASDO Basic or a terminal software OTT provides a Service Tool consisting of an interface converter RS 485 USB and an assembling cable in order to connect Parsivel to a PC with USB interface Assembling cable for Interface converter So interface converter RS 485 USB _ EON sr 9 _ PE SEE S 4B br n S Parsivel USB plug for the connection to the PC terminal strip Proceed as follows to connect the Parsivel via the Service Tool to a PC Install the driver software of the interface converter as described in the original manual of the interface converter Set the jumper inside the interface converter as shown in fig 22 10 12 14 16 18 20 11 13 15 17 19 27 28 Connect both wires of the assembling cable for the interface converter to the 7 slot screw terminal of the Parsivel as shown in fig 20 Make shure that all olzer interface lines are disconnected of the Parsivel srew terminal Connect the 9 pin Sub D socket of the assembling cable to the 9 pin Sub D plug of the interface converter Connect the USB plug of the interface converter to the USB interface of the PC Start Parsivel software ASDO Basic or a terminal software on your PC Disconnect the Service Tool and Parsivel after the configuration procedure and reinstall the primarily interface connecti
21. ery Solder the corresponding cables as shown in Fig 17 to the 9 pin Sub D socket Plug the 9 pin Sub D socket onto the interface converter Connect the interface converter to a PC RS 232 null modem cable socket socket Connect the power cables of the Parsivel to the power source see Chapter 9 Connecting the Power Supply Accessories to the Parsivel Provide power to the interface converter Start a terminal software program on the PC and make contact with the Parsi vel see Chapt 11 Operating the Parsivel using Terminal Software Input the command CS C 4 1 lt CR gt Parsivel switches to 4 wire communi cation Fig 18 Connecting the Parsivel to ADAM 4520 converter RS 485 RS 232 in 2 wire communication 8 2 Connecting the Parsivel to the ADAM 4520 converter RS 485 RS 232 accessories The ADAM 4520 converter RS 485 RS 232 accessories can only be set for 2 wire communication Setting the dip switches at the converter Set the internal dip switches at the converter as follows Switch 1 1 2 10 bits on off Switch 2 2 3 4 5 6 7 8 9 10 115 2 Kbps off off off off off off off off on off 2 wire communication Parsivel is configured at the factory for 2 wire communication Connect the Parsi vel as follows Adam 4520 Power Interface supply converter 11 30 V DC Data Data 3 2 1 G 9 d DOODO
22. fi cation is smaller for small slow particles than for large and fast particles B 1 Class limits The measured particles are subdivided into D and V classes in a two dimensional field wherein there are 32 different D and V classes so that there are a total of 32 x 32 1024 classes Classification according to volume equivalent diameter Class Number Class Average in mm Class Spread in mm 1 0 062 0 125 2 0 187 0 125 3 0 312 0 125 A 0 437 0 125 5 0 562 0 125 6 0 687 0 125 7 0 812 0 125 8 0 937 0 125 9 1 062 0 125 10 1 187 0 125 1 1 375 0 250 12 1 625 0 250 13 1 875 0 250 14 2 125 0 250 15 2 375 0 250 16 2 750 0 500 17 3 250 0 500 18 3 750 0 500 19 4 250 0 500 20 4 750 0 500 21 5 500 1 000 22 6 500 1 000 23 7 500 1 000 24 8 500 1 000 25 9 500 1 000 26 11 000 2 000 27 13 000 2 000 28 15 000 2 000 29 17 000 2 000 30 19 000 2 000 31 21 500 3 000 32 24 500 3 000 Note Class 1 and Class 2 are limits and are not evaluated at the current time in mea surements using the Parsivel since they are outside the measurement range of the device 43 Classification according to speed Class Number Class average in m s Class spread in m s 0 050 0 100 2 0 150 0 100 3 0 250 0 100 A 0 350 0 100 5 0 450 0 100 6 0 550 0 100 7 0 650 0 100 8
23. gt Activating polling mode Parsivel issues a data telegram no later than 500 ms after receiving the command This command deactivates the interval controlled telegram CS R lt CR gt Repeat polling mode The data telegram is output no later than 500 ms after the confirmation of the command CS R xx lt CR gt Output individual measurements After confirmation of the command the indicated measurement is output accor ding to the table in chapter 11 2 Measured value numbers CS C R lt parameter gt lt CR gt Adjust baud rate Warning Changing the baud rate can cause the loss of the connectivity The baud rate can be adjusted from 9600 115200 The baud rate is set at 19200 at the factory 1200 Baud 8 N 1 2400 Baud 8 N 1 4800 Baud 8 N 1 9600 Baud 8 N 1 19200 Baud 8 N 1 38400 Baud 8 N 1 57600 Baud 8 N 1 1 CS C R lt CR gt Query baud rate With this command the current baud rate setting can be queried CS C 4 lt parameter gt lt CR gt Set up 4 wire mode Two different physical operating modes are possible Value range Standard 0 Description 2 wire RS 485 1 4 wire RS 485 CS C B lt parameter gt lt CR gt Setting up RS 485 bus mode Warning Activating the bus mode can cause the loss of the connectivity With this command it is possible to operate more than one sensor through one RS 485 interface The sensors are then operated via the bus address Value
24. guration Example when connecting to an SDI 12 interface LogoSens Parsivel 5DI 12 E Communication interface COM1 Communication interface COM2 Alarm management Display Observer Channel 0001 Rain intensity Meas cycle SDI 12 Master 0230304305306 V0 v08 Store Channel 0002 Rain amount since start of device Meas cycle V02 Virtual Sensor Store Channel 0003 Weather code SYNOP wawa T ab 4680 Meas cycle 03 Virtual Sensor Store Channel 0004 Radar reflectivity Meas cycle V04 Virtual Sensor Store Channel 0005 MOR visibility in precipitation Meas cycle V05 Virtual Sensor Store Channel 0006 Time of measurement Meas cycle V06 Virtual Sensor Store Channel 0007 Signal amplitude of the laser strip Meas cycle 207 Virtual Sensor Store Channel 0008 Number of detected particles Meas cycle V08 Virtual Sensor Store 19 Fig 13 Parallel connection of SDI 12 data 20 logger and Parsivel software ASDO Connecting the Parsivel in parallel to an SDI 12 data logger and to a PC You have the option of reading out the measurement data from Parsivel in parallel via an SDI 12 data logger and via the Parsivel software ASDO on a PC see the operating instructions to Parsivel s application software ASDO The SDI 12 data logger specifies the time base for this Note The sample interval in the Parsivel software
25. has started measurement operations and has issued a dota tele gram reset the Parsivel firmware with the command CS Z 1 lt CR gt Parsivel answers with Bootloader Parsivel Press CR repeatedly directly after the message Parsivel answers with 2 Input the command sup CR Parsivel answers with Start upload IOP Firmware with XMODEM CRL Select Transfer Send file in the menu bar The Send file window opens 5 Folder CH Filename C 103B10P BIN Browse Protocol modem Close Cancel Select the file IOP BIN under Filename using the Browse button you had previously stored this file on your PC Select the Xmodem protocol type from the Protocol selection window Confirm your input with Send The Xmodem file send for Parsivel window opens Xmodem file send for Parsivel i Sending CTO3BIOP BIN Packet 85 Error checking Retries 0 Total retries 0 Last error File of 27K Elapsed 00 00 09 Remaining 00 00 15 Throughput 109 cps cps bps Fig 27 Send file Window Fig 28 Xmodem file send for Parsive I window The data transfer runs and the window closes automatically after the dota transfer has finished Press CR repeatedly directly after closing the window Input the command dup CR Parsivel answers with Start upload DSP Firmware with XMODEM CRC Selec
26. he SDI 12 connection CS S E O CR Impulse Input The rainfall amount can be detected in a manner similar to rain collectors accor ding to the tilting scale principle using impulse input to a data logger For the impulse output of the Parsivel the following values apply Impulse output duration 250 ms Pulse voltage OV Open circuit voltage 5V Resolution 0 1 mm impulse output frequency 2 Hz Connect the Parsivel as follows to the data logger with impulse input Fig 14 Connecting the Parsivel to the Data logger with Impulse Input Data logger Power supply 11 36 V DC GND Impulse input 5 10kQ 36 V DC GND 11 y 8 S A S 2 1 ooooooQ0 Parsivel 21 22 Fig 15 Connecting the Parsivel to the data logger with Status Input Status Input With status input it is possible to differentiate between solid and liquid precipit ation For the status output of the Parsivel the following values apply Validity period equal to the sample interval Status voltage Liquid precipitation 5 V Solid precipitation 0 V Connect the Parsivel as follows to the data logger with status input Power supply 11 36 V DC Data logger a 5 gt 25 l g VCC GND y 8 4 SZ 2B i GG Gi Gi
27. l to a data logger The Parsivel can be connected to the following data loggers LogoSens with an RS 485 interface LogoSens with an SDI 12 interface Any data logger with an SDI 12 interface Parallel operation of a data logger with SDI 12 interface and a PC RS 485 Data logger with impulse or status input 7 1 Connecting the Parsivel to the LogoSens Station Manager via RS 485 interface The measured values determined by the Parsivel can be queried by the LogoSens station manager and stored Connect the Parsivel via the RS 485 interface to the LogoSens as shown in figure 8 LogoSens _LogoSens T Power supply i B T H H 11 36 V DC SSSS 5 ee PES B R 120Q gt rom 20 m of cable length 36 V DC lt a tof o oi oc 3 3 nl o D c GND 11 5 3 2 2000000 Aa Parsivel Configuring the LogoSens Station Manager for RS 485 communication To be able to query and store the data from the Parsivel using the LogoSens a configuration must be set up in the LogoSens Figure 9 shows an example Logo Sens configuration for communication via the RS 485 interface See operating instructions of LogoSens Station Manager for more on this Make su
28. le with rain Rain Rain drizzle with snow Snow Snow grains Freezing rain Hail The precipitation measurements are carried out using a special sensor head that was developed for this particular purpose It detects precipitation optically The data thus determined are processed and stored by a fast digital signal processor Parsivel issues one data telegram every 30 seconds 5 1 Functional principle The theory behind Parsivel is a laser sensor that produces a horizontal strip of light The emitter and the receiver are integrated into a single protective housing Laser beam Transmitter Receiver Precipitation particle Measurement of particle size If there are no particles in the laser beam the maximum voltage is output at the receiver Precipitation particles passing through the laser beam block off a portion of the beam corresponding to their diameter thus reducing the output voltage this determines the particle size Measurement of particle speed To determine the particle speed the duration of the signal is measured A signal begins as soon as a precipitation particle enters the light strip and ends when it has completely left the light strip Chapter 8 Chapter 8 deet E tee i i i Cable Cable max 300 m max 300 m RS 485 RS 485 Interface Interface converter converter cis ci RS 232 USB RS 232 USB ASDO Basic Storage without Storage with precipitation precipitation spectrogra
29. measurements that the setup loca tion be selected carefully Here wind and vibrations must be minimized see chap ter 13 2 Disruptions due to Convection and Vibrations If the protection against these influences is not sufficient virtual drops can be detected Prerequisites The Parsivel is mounted on a pipe The pipe must have the following specifications Pipe diameter 50 62 mm Pipe consists of an electrically conducting material and is grounded The concrete foundation of the pipe must have minimum dimensions of 35 x 35 x 80 cm L x W x Before the Parsivel can be fastened to the standpipe the data transmission cable and power supply must be installed 6 1 Cable Selection Data Transmission Cable The Parsivel has the following signal outputs RS 485 SDI 12 Impulse output Status output We recommend that the data transmission cable has the following characteristics Twisted pair cable Usage length for transfer via the RS 485 interface max 300 m Usage length for transfer via the SDI 12 interface max 70 m Cable cross section gt 0 5 mm Power supply cable For the 24 V power supply we recommend a cable with a maximum resistance of 2 Q The maximum voltage drop at 2 A is 4 V The cable length depends on the cable cross sectional area Cable cross section max cable length 0 25 mm2 14m 0 5 mm2 28 m 0 75 mm 42 1 0 mm 56m 1 5 mm 84 m 2 5 mm 140 m 4 0 mm 225m Fig 2 Wiri
30. n rare cases intense sun can affect the sensor due to the high sensitivity of the device this is caused by refractive index fluctuations mirage effects in connection with wind The same applies to vibrations Most of these types of disruptions are recognized and removed through formal analysis of the signals Nevertheless some disruption signals cannot be differentiated from the signals of small particles Further examinations of the particle collective over the respective reporting period help to prevent precipitation reports during good weather for the most part 14 Technical data Optical Sensor Laser Diode Wavelength Output Power Laser Class Beam Size W x T Measurement Surface Measuring range Particle Size of Fluid Precipitates Particle Size of Solid Precipitates Particle Speed Design Weather Code Visibility with precipitation Rain rate Minimum intensity Maximum intensity Accuracy De icing protection Power supply Current drawn Interfaces Electromagnetic tolerance Lightning protection Material Weight Temperature range Protection Size H x W x T Power output 50 W is needed 650 nm 3 mW 1 21 CFR 1040 10 and 1040 11 1M IEC EN 60825 1 A2 2001 180 x 30 mm 54 cm Recognition of edge events 0 2 5 mm 0 2 25 mm 0 2 20 m s 32 Precipitate Size Classes 32 Speed Classes Radar Reflectivity Z Outputs SYNOP w w table 4680 SYNOP ww table 4677 NWS METAR
31. n the sensor dynam ics The last value Sensor status of the OTT telegram provides a reference con cerning the current state of the optics wherein the following error codes are reported 0 Everything OK 1 Laser protective glass is dirty but measurements are still possible 2 Laser protective glass is dirty partially covered No further usable measure ments are possible 3 Laser damaged It is good idea to clean the laser optics beginning at status 1 OTT Messtechnik recommends that the laser s protective glass be cleaned at least semiannually regardless of the messages To clean the laser s protective glass proceed as follows Clean the laser s protective glass on both sensor heads from the outside with a soft cloth 12 2 Keeping the light pathway open Please follow Safty Instructions see chapter 4 when keeping the light pathway open At regular intervals remove all impediments such as paper branches or spider webs that are in the way of the light pathway Fig 29 Splash protector 12 3 Cleaning the splash protector Danger of injury When working with the splash protector danger of injury exists due to sharp edges Be careful when handling the splash protector Wear gloves if necessary Danger of device damage The splash protector bends easily Clean the splash protector on a flat surface A splash protector is attached to each sensor head of the Parsivel The splash protector has many
32. ng assignment for a 2 wire connection with RS 485 and pulse output The SDI 12 connection is turned off This terminal assignment is for standard use Fig 3 Connection Assignment for a 4 wire connection with RS 485 transfer 6 2 Wiring the Parsivel Proceed as follows to wire the Parsivel Pull the existing connection cables from the external electronic unit upward through the standpipe Remove the bottom cover of the sensor head attached to the rear of which is the laser warning label To do so remove the two hex screws from the bottom cover using the 2 5 mm Hex key supplied Run the connecting cables from below through the cable gland see Fig 7 of the Parsivel and then through the interior of the Parsivel to the opened sensor head Connect the cables to the 7 slot screw terminal provided installation set accor ding to the configuration of the Parsivel as described in Figures 2 through 4 Parsivel S G eG gt O eG D zo d 65 20 ae E F amp gt amp OP 5 2 NA D ec WwW A O0 gt Y N 2 2 2 gt D 8 Parsivel NY e eG O Power supply GND 36 V DC RS 485 4 wire B IN RS 4
33. notifi s et ainsi correspond aux r glement de la Directive Ort und Datum der Ausstellung Kempten den 2006 OS 40 Place and Date of Issue Lieu et date d tablissement A Name und Unterschrift des Befugten UN Name and Signature of authorized person Nom et signature de la personne autoris e OTT MESSTECHNIK GmbH amp Co KG Gesch ftsf hrer Dr Ing Anton Felder Pers nlich haftende Gesellschafterin OTT MESSTECHNIK Verwaltungs GmbH Postfach 21 40 87411 Kempten Sitz der Ges Kempten Registergericht Kempten HRB 7687 und HRA 3807 USt ID Nr DE 128 780 710 Steuer Nr 127 171 51206 LudwigstraBe 16 87437 Kempten Tel 49 0 831 56 17 0 Deutsche Bank AG BLZ 700 700 10 Kto Nr 409 0304 00 BIC DEUTDEMM IBAN DE96 7007 0010 0409 0304 00 Fax 49 0 831 56 17 209 Commerzbank AG M nchen BLZ 733 400 46 Kto Nr 775 0649 00 BIC COBADEFF733 IBAN DE13 7334 0046 0775 0649 00 infoGott hydrometry de Sparkasse Allg u BLZ 733 500 00 Kto Nr 18 861 BIC BYLADEM1ALG IBAN DE24 7335 0000 0000 0188 61 www ott hydrometry de Document number 70 200 005 B E 07 0806 OTT MESSTECHNIK GmbH amp Co KG Ludwigstrasse 16 87437 Kempten Germany Phone 49 0 831 5617 0 Fax 49 0 831 5617 209 infoGott hydrometry com www ott hydrometry com
34. on of the installed system Note Please do not use this non galvanic isolated interface converter for a permanent installation of Parsivel to a PC in terms of overvoltage protection and safety aspects Fig 23 Connecting Power Supply IP 20 to the Parsivel Fig 24 Connecting Power Supply IP 65 to the Parsivel 9 Connecting the Parsivel to a Power Supply Accessory OTT Messtechnik offers two power supplies accessories as a power source Power Supply IP 20 Power Supply IP 65 Information on the cable necessary for this can be found in Chapter 6 1 Cable Selection Connect the power supply IP 20 or IP 65 to the Parsivel as shown in Figures 23 and 24 OOs ACL O Q ACN RO Qo GND eS eil 12 24 V DC V SEI qe 12 24N DC V BS Qs Power supply Parsivel IP 20 External power supply External data line Terminal connection of Power supply IP 65 HS 12 3 4 56 7 W Q a e oi Z la lt Olz elg 9 9 OL COR X 5 5 NI N EI O 2 oO wl el cw sl lee ai Ba amp ol ol OJ o Parsivel 29 30 10 Hea
35. ph spectrograph g ZE 0 ro Hydras 3 The following parameters be derived from these two determined quantities Size spectrum Type of precipitation Kinetic energy Intensity of the precipitation Radar reflectivity Visibility The spray protection attached to the sensor head prevents precipitation particles from deflecting off the housing falling into the laser beam and thus falsifying the measurements 5 2 Connection Options for the Parsivel The Parsivel can be connected to various devices as shown in the illustration below Refer to the respective chapters in this regard Parsivel H Total height Disdrometer Pipe ___ general 1m 1 Present Weather Power supply Ss Sensor Parsivel 2m Signal outputs __L RS 485 D SDI 12 Impulse Status Chapter 7 1 Chapter 7 2 Chapter 7 3 Chapter 9 Sete I P i i i i Cable Cable Impulse SDI 12 max max 70m Status cable length RS 485 SDI 12 see chap 6 1 RS 485 2 wire SDI 12 data logger data logger power supply i Termination module RS 485 LogoSens 2 10 6 Installing the Parsivel Please follow Safty Instructions see chapter 4 when installing the Parsivel It is of critical importance to the quality of the
36. re that the measurement cycle set up in all Parsivel channels is provided with the same value 15 Fig 9 LogoSens Configuration Example when connecting to an RS 485 interface 16 LogoSens Parsivel RS 485 Communication interface COM1 Communication interface COM2 Alarm management Display Observer Channel 0001 Rain intensity Meas cycle PARSIVEL M300 Instantaneous value Store Channel 0002 Rain amount since start of device Meas cycle PARSIVEL M300 Instantaneous value Store Channel 0003 Weather code SYNOP wawa Tab 4680 Meas cycle PARSIVEL M300 Instantaneous value Store Channel 0004 Weather code SYNOP ww Tab 4677 Meas cycle PARSIVEL M300 Instantaneous value Store Channel 0005 Radar reflectivity Meas cycle 4 PARSIVEL M300 Instantaneous value Store Channel 0006 MOR visibility in precipitation Meas cycle 4 PARSIVEL M300 Instantaneous value Store Channel 0007 Sensor status Meas cycle 4 PARSIVEL M300 Instantaneous value Store Channel 0008 Signal amplitude of the laser strip Meas cycle PARSIVEL M300 Instantaneous value Store Channel 0009 Temperature in the sensor Mess cycle PARSIVEL M300 Instantaneous value Store Fig 10 Connect the Parsivel to any data logger via the RS 12 interface 7 2 Connecting the Parsivel to a Data logger via the SDI 12 Interface If
37. rsivel and the terminal program The Parsivel provides an RS 485 communication interface This serial interface can be operated at various baud rates Communication with the sensor is independent of the platform and thus is possible with any standard terminal software Below operation using the terminal software program Hyper Terminal is described since this is a part of Microsoft Windows scope of delivery In order to operate Parsivel using Hyper Terminal proceed as follows Connect the Parsivel to your PC as described in chapter 8 Connecting Parsivel to the PC Start Hyper Terminal After starting Hyper Terminal the window Connection Description opens Enter a name for the connection select an arbitrary symbol and confirm your input with OK The next window Connect to now opens Select the COM interface of your PC and confirm your input with OK The next window that opens is Properties of COM No Enter the following connection settings Bits per second 19200 Data bits 8 Parity none Stop bits 1 Flow control none After a successful connection with the Parsivel is made it sends an identification telegram after it s turned on BOOTLOADER PARSIVEL after approx 10 seconds the following message appears PARSIVEL PWS WWW OTT HYDROMETRY DE TEL 49 0 831 5617 0 FIRMWARE V 1 04 Approximately 30 seconds after sending the identification telegram Parsivel starts measuring automatically and o
38. small holes that break up incident raindrops so that no secon dary spectra are detected in the laser beam due to splashing As soon as the holes are plugged by bird droppings pollen or similar material the drops can no longer be broken up and the splash protector has to be cleaned Splash protector Hex screws Clean the splash protector as follows Loosen the four hex screws of the respective splash protector using an M4 hex key and remove the splash protector Clean the splash protector using a brush and commercially available household cleanser on both sides under running water Reinstall the splash protector onto the respective sensor head using the hex screws If the splash protector can no longer be cleaned or if it is defective it can be purchased as a replacement part from OTT Messtechnik see Chapter 2 Part Numbers 37 38 13 Functional disruptions and remedies 13 1 Parsivel Does Not Start Check the polarity of the power supply the A B connections of the RS 485 cables and the baud rate see Chapt 6 and 7 If this does not work start any terminal software program on your PC e g Hyper Terminal and try to make a connection to Parsivel see Chapt 11 Operating Parsivel using Terminal Software Parsivel should send a status message of ok in response to the CS CR command If this does not hap pen contact OTT Hydroservice 13 2 Disruptions due to convection and vibrations I
39. t Transfer Send file in the menu bar The Send file window opens Folder Filename C 103BDSP BIN Browse Protocol modem Close Cancel Select the file DSP BIN under Filename using the Browse button you had previously stored this file on your PC Select the Xmodem protocol type from the Protocol selection window Confirm your input with Send The Xmodem file send for Parsivel window opens Xmodem file send for Parsivel A Sending Jumper EI Packet 25 Error checking Retries 0 Total retries ft Last error File n 3K of 33K Elapsed 00 00 02 Remaining Throughput cps bps The data transfer runs and the window closes automatically after the data transfer has finished After the window has closed input the command RUN lt CR gt to start Parsivel The firmware was successfully updated 35 36 12 Maintenance Danger of eye injuries In working at the sensor there is a danger of eye injuries Never look directly into the laser or view with optical instruments Whenever working with the sensor always turn power off Never open the sensor Please respect also the safety instructions in chapter 4 12 1 Cleaning the laser s protective glass Depending on the time of year and location air pollution can lead to contamina tion of the laser s protective glass This can result in a drop i
40. tensity Rain rate mm h NWS Tab 4678 light lt 0 4 SP GS moderate gt 0 4 SP GS strong SP GS Hail Intensity Rain rate mm h NWS Tab 4678 light lt 75 moderate gt 7 5 OTT Konformitatserklarung Declaration of Conformity Declaration de Conformit Wir We Nous OTT Messtechnik GmbH amp Co KG Anschrift Address Adresse Ludwigstra e 16 D 87437 Kempten erkl ren da das Produkt declare that the product declarons que le produit Bezeichnung Name Nom Parsivel Artikel Nr Article No No d Article 70 200 005 9 0 mit den Anforderungen der Normen fulfills the requirements of the standard satisfait aux exigences des normes EG 89 336 EWG national international EN 61326 IEC 61326 St raussendung emission mission Klasse class classe B class classe B St rfestigkeit noise immunity immunit EN 61000 4 2 4 kV 8 kV IEC 61000 4 2 4 kV 8 kV EN 61000 4 3 10 V m IEC 61000 4 3 10 V m EN 61000 4 4 2 kV IEC 61000 4 4 2 kV EN 61000 4 5 2 kV 1 kV IEC 61000 4 5 2 kV 1 kV EN 61000 4 6 10 V IEC 61000 4 6 10 V Sicherheit von Laser Produkten Safety of laser products S curit de produits laser EN 60825 1 IEC 60825 1 Klasse class classe 1M class classe 1M und den hinterlegten Pr fberichten bereinstimmt und damit den Bestimmungen entspricht and the taken test reports and therefore corresponds to the regulations of the Directive et les rapports d essais
41. ting the Parsivel sensor heads An automatic heating system prevents ice buildup on the sensor heads A tempe rature sensor in the sensor head measures the temperature each second The hea ting system adjusts according to this value The purpose is to hold the sensor heads at a constant temperature of at least 10 C If the outside temperature drops below 10 C the heating current is increased until either 10 C is again reached in the sensor heads or until the maximum current consumption I is reached In order to tailor the heating controls to the respective climatic conditions and lmay can be configured accordingly using the Parsivel software ASDO or alternatively using CS com mands through a terminal software In order to prevent condensation of the sensor apertures the heater must be activated and lin set to 0 15 A Optimum heating output can be guaranteed with a supply voltage of 20 V DC Information on the setting of I and Lon is available in Appendix A CS Command Set or in the operating instructions Parsivel Software ASDO Note Note that the sensor head heaters are deactivated at the factory Activate the sen sor heaters when using the Parsivel at temperatures below 4 C We recommend a power supply of 24V DC and a maximum heating current of 2 A to provide for unlimited heating functionality in all climatic conditions 11 Operating Parsivel with a terminal software 11 1 Set up communications between the Pa
42. utputs the data telegram 31 32 11 2 Measured value numbers The measurements and status values are output from the Parsivel in the form of a telegram To this end each value that can be output was assigned a measurement number In addition the number of digits that the value in the telegram can con tain the form in which this value is output and in what units is precisely defined These specifications are listed in the following table Measured Description Digits Form Units value No 01 Rain intensity 32 bit 8 0000 000 mm h 02 Rain amount accumulated 32 bit 7 0000 00 mm 03 Weather code according to SYNOP 2 00 1 Table 4680 04 Weather code according to SYNOP ww 2 00 1 Table 4677 05 Weather code METAR SPECI w w 5 RASN 1 Table 4678 06 Weather code according to NWS Code 4 RLS 1 07 Radar reflectivity 32 bit 6 00 000 dBz 08 MOR visibility in the precipitation 4 0000 m 09 Sample interval 5 00000 s 10 Signal amplitude of the laser strip 5 00000 1 11 Number of detected particles 5 00000 1 12 Temperature in the sensor 3 000 13 Sensor serial number 6 123456 1 14 Firmware IOP version number 4 V1 01 1 15 Firmware DSP version number 4 V1 01 1 16 Current through the heating system 3 0 0 A 17 Power supply voltage in the sensor 4 00 0 18 Sensor status 1 0 1 19 Date 20 01 01 2000 time measurement begins _00
43. ware Maintenance 12 1 Cleaning the laser s protective glass 12 2 Keeping the light pathway open 12 3 Cleaning the splash protector Functional disruptions and remedies 11 1 Parsivel does not start 11 2 Disruptions due to convection and vibrations Technical data Appendix A CS Command Set Appendix B Classification of precipitation types B 1 Class limits Appendix C Characterization of precipitation type by precipitation codes C 1 Precipitation code according to SYNOP C 2 Precipitation code according to the NWS and METAR SPECI Table 4678 Declaration of Conformity 40 43 A3 45 A5 46 47 1 Scope of Delivery Parsivel 1 Parsivel measurement head is an optical sensor with 30 mm wide and 180 mm long light strip in the tunnel housing 1 Installation set with 1 screwed terminal strip 7 slots 7 wire end sleeves 1 grounding cable lug 1 flat washer 6 M 8 X 16 grub screws 7 M 8 X 25 grub screws 1 M8 hex nut 2 lock washers 1 Allen key 4 mm 1 Allen key 2 5 mm 1 Parsivel software ASDO Basic 1 set of operating instructions 2 Part Numbers Parsivel Accessories Replacement parts Parsivel with 2 special spray protection units with installation set with Parsivel software ASDO Basic Interface converter RS 485 USB RS 485 RS 232 Power supply Parsivel IP 20 without mast support IP 65 with mast support Connecting cable Parsivel Power suppl
44. y IP 65 Connecting cable Parsivel Electronic cabinet max 100 m Parsivel software ASDO for PC full version LogoSens RS 485 termination module Service Tool consisting of interface converter RS 485 USB assembling cable for the interface converter Spray protection 1 piece 70 200 005 9 0 97 961 091 9 5 97 970 041 9 5 97 850 011 9 5 97 850 012 9 5 70 200 107 4 2 97 000 038 9 5 56 551 001 9 7 70 200 803 9 5 97 970 044 9 5 70 200 106 4 2 70 200 405 3 1 3 Parsivel Factory Settings Parsivel is a flexibly configurable device concerning terminal assignment interface parameters and heating settings and is supplied with the following factory set tings Operating mode RS 485 2 wire Baud rate RS 485 19 200 baud RS 485 bus mode deactivated Bus address RS 485 0 SDI 12 interface deactivated SDI 12 bus address 0 Impulse output 0 1 mm activated Status solid 0 liquid 1 Heating mode off Data telegram OTT telegram see Chapter 11 4 Measurement interval 30 5 The parameters be set using Parsivel software ASDO or using a terminal soft ware package Information on the setting of these parameters is available in Appendix A CS Command Set or in the operating instructions Parsivel Soft ware ASDO 4 Safety Instructions These operating instructions contain basic instructions that must be followed during installation operation and maintenance Therefore it is absolutely nec
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