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Meteoclima Ultrasonic Anemometer 2D Instructions For Use Manual

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Instruction for Use
021537/06/10
Ultrasonic Anemometer 2D
451301
from software version V3.09
Status: 05/2009
Feingerätebau K. Fischer GmbH
Venusberger Str. 24
09430 Drebach Germany
Phone +49 37341 487 0
Fax +49 37341 487 30
www.meteoclima.de
info@meteoclima.de

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  • Page 1 Instruction for Use 021537/06/10 Ultrasonic Anemometer 2D 451301 from software version V3.09 Status: 05/2009 Feingerätebau K. Fischer GmbH Venusberger Str. 24 09430 Drebach Germany Phone +49 37341 487 0 Fax +49 37341 487 30 www.meteoclima.de info@meteoclima.de...

  • Page 2: Table Of Contents

    Contents Application ........................6 Mode of operation ......................7 Measuring principle....................... 8 Wind velocity and direction....................8 Acoustic virtual temperature ....................8 2.2.1 Correction of the acoustic-virtual temperature from Influence of air humidity ....9 Preparation for operation .................... 12 Selection of installation site .....................
  • Page 3 7.3.5 Gust Acquisition ......................33 Serial data output ......................34 7.4.1 Data enquiry......................34 7.4.2 Independent telegram output ..................34 7.4.3 Fixed telegram formats ..................... 35 7.4.4 Generation of check sum ..................35 7.4.4.1 Type 1 ........................ 36 7.4.4.2 Type 2 ........................ 36 7.4.5 User-specific telegram ....................
  • Page 4 Command and description..................58 Appendix 1 Predefined data telegrams..............87 11.1 Telegram 1 VD ....................... 87 11.2 Telegram 2 VDT ......................87 11.3 Teleg ram 3 V4DT ......................88 11.4 Telegram 4 NMEA......................88 11.5 Telegram 5 VDT, Standard deviation ................89 11.6 Telegram 7 Vx, Vy, VT ....................

  • Page 5: Operating Instructions

    Patent No.: US 7,149,151 B2 Operating Instructions These operating instructions describe all possible applications and settings of the instrument. The Ultrasonic Anemometer 2D is factory-set. Identification for the factory setting derives from the order No. and the respective "Factory Setting" Order number and Setting see supplementary sheet "Factory Setting"...

  • Page 6: Application

    Application The Ultrasonic Anemometer 2D is used to detect the horizontal components of wind velocity and wind direction as well as the virtual temperature in 2 dimensions. More than 35 different measurement values are available, such as: • Orthogonal wind velocity vectors (X- and Y-path) •...

  • Page 7: Mode Of Operation

    Mode of operation The Ultrasonic Anemometer 2D consists of 4 ultrasonic transformers, in pairs of two facing each other at a distance of 200 mm. The two resulting measurement paths are vertical to each other.

  • Page 8: Measuring Principle

    Measuring principle Wind velocity and direction The speed of propagation of the sound in calm air is superposed by the velocity components of an air flow in the direction of the wind. A wind velocity component in the propagation direction of the sound supports the speed of propagation;...

  • Page 9: Correction Of The Acoustic-Virtual Temperature From Influence Of Air Humidity

    its physical properties without the step of thermal coupling of this gas to a sensor which would otherwise be necessary. The advantages of this measuring method are firstly its inertia-free reaction to the actual gas temperature, and secondly, the avoidance of measuring errors such as those that occur for example when a solid-state temperature sensor is heated by radiation or cooled through the evaporation of water on the sensor.
  • Page 10 where is the acoustic virtual temperature of dry air and the molar mass of water vapour, γ describes the molar mass of dry air. The ratios with the value 0.621978 and with γ the value 0.95108 can be included in the equation as fixed constants. [3] The ratio describes the water vapour pressure divided by the air pressure.
  • Page 11 References: [1] Lanzinger, Eckhard (Deutscher Wetterdienst), Langmack, Hans (Universität Hamburg): Measuring air temperature by using an ultrasonic anemometer [2] Musa, Mark (Meteo Swiss), Tammelin, Bengt (Finnish Meteorological Institute) et al.: Measurement of temperature with wind sensors during severe winter conditions [3] Aspiration-Psychrometer tables, Deutscher Wetterdienst, 7.

  • Page 12: Preparation For Operation

    Preparation for operation Attention: The working position of the anemometer is vertical (sensor arms "above". During installation, de-installation, transport or maintenance of the anemometer it must be ensured that no water gets into the shaft and connector or cable gland of the anemometer. When using a lightning rod take care that it be installed in a angle of 45°...

  • Page 13: Installation Of Anemometer

    Installation of anemometer Proper installation of the ultrasonic anemometer is carried out using a tube socket R1½" (Ø 48.3 mm) and 50 mm in length. The inside diameter of the pipe socket must be at least 40 mm as the ultrasonic anemometer is electrically connected from below.

  • Page 14: Alignment To North

    Alignment to north For exact determination of the wind direction the anemometer has to be installed aligned to the north (true north). To align the anemometer, the arm of the sonic transformer marked red must point to north (true north). To do so, select a conspicuous feature of the landscape to the north or south with a compass and turn the mast or anemometer until the opposing arms are aligned in this direction.

  • Page 15: Electrical Installation For Ultrasonic Anemometer With Connector

    Electrical Installation for Ultrasonic Anemometer with Connector The ultrasonic anemometer is equipped with a plug for electrical connection. A coupling socket (mating) is included in delivery. It is located in the lower part of the transport packing. A plastic fit- up aid for holding the bush insert while screwing it together with the coupling sleeve, is included in delivery.

  • Page 16: Connector Pin Assignment (Examples Of Function)

    3.4.2 Connector Pin Assignment (Examples of Function) Remark: - For exact allocation of function please refer to supplement “Factory Settings” - The pins 1 – 6 (incl.) are galvanically isolated from the supply voltage and from housing. • Serial Interface, Full-duplex View of solder terminal of coupling socket Pin Allocation...

  • Page 17: Electrical Installation For Ultrasonic Anemometer With Screwed Cable Gland

    Electrical Installation for Ultrasonic Anemometer with Screwed Cable Gland The ultrasonic anemometer is equipped with a fix-connected cable by means of a screwed cable gland. The cable end is open. The core ends are marked by means of pin numbers on cable marking rings.

  • Page 18: Maintenance

    Maintenance As the instrument does not have moving parts, i.e. is not subject to wear during operation, only minimal servicing is required. Given that the sensor surfaces are normally kept clean by rain, it will only be necessary to occasionally remove residues from the sensor surfaces in regions with very little rain.

  • Page 19: Functional Description

    Functional description The functioning of the ULTRASONIC instrument is described below. Due to the limited number of plug connections some functions exclude the simultaneous operation with other functions. Such dependency is described in each case. For example, in half duplex mode independent telegram output is not permissible.

  • Page 20: Response Delay

    Full duplex mode Half duplex mode Independent telegram output possible Independent telegram output not possible Command TT (see Bus mode not possible (RS485, DM=1), Bus mode possible (RS485, DM=0) No bus mode possible (RS422, DM=2) No output of analogue values to PIN RXD- and Output of analogue values possible RXD+ No readin of ID from external PINs...

  • Page 21: Return Values Of Ultrasonic

    Example: With the command 00BR<cr> <cr> stands for Carriage return (Enter key) the selected data record for the baud rate is returned. !00BR00005 Remark: The receiving buffer of the ULTRASONIC can be cleared by sending a carriage return <CR>. If the ULTRASONIC possibly has invalid characters in the receiving buffer, this buffer can be processed by sending a carriage return.
  • Page 22 Enquiry mode: This mode comprises commands which do not influence the parameters of the ULTRASONIC. They include for example, output of the system status and interrogation of the data telegram with User mode: This mode comprises commands which affect the behaviour of the ULTRASONIC. These parameters can be changed by the user.

  • Page 23: Baud Rate

    7.1.6 Baud rate The baud rate is used to select the transmission speed via the RS485. The parameter range is from 1200 baud to 921.6 kBaud. To prevent accidental reprogramming of the baud rate over 115.2kBaud, the baud rates above 115.2kBaud are accessed with the command BX.

  • Page 24: Bus Mode

    !04AV00005 Return of averaging time It is also possible to specify the ID on start-up via the external PINs WV/RXD- , WD/RXD+ and ADIO. For this purpose the parameters of the commands AA, AB, AC and XI must be set properly: see Command AA , Command AB , Command AC , Command XI.

  • Page 25: Analogue Outputs

    The parameters AY,AZ; BY,BZ; CY,CZ are available for the scaled output of the analogue measuring values. By means of these parameters the measuring range ( 0..10,0V) can be converted into a linear output. The Y-parameters always state the value corresponding to 0V, the Z-parameters state the value corresponding to 10,0 V.

  • Page 26: Scaling Of Analog Wind Velocity

    7.2.3 Scaling of analog wind velocity With the analog wind velocity the user has the option of specifying the velocity for the terminal value of the measuring range with the command AR. In the preset value the scaling is 0..60m/s: see Command AR.

  • Page 27: Data Acquisition

    540° With the setting 0..540° uncontrolled jumping is avoid ed with unsteadiness (0° ). Here the unsteadiness is located at 540° . If the angle > 540° , a single jump to 180° takes place (540° -360° = 180). Measured value output Assigned wind direction 0°...

  • Page 28: Instantaneous Values And Output Of Raw Measured Values

    7.3.1 Instantaneous values and output of raw measured values The output of instantaneous values is generally a special case. Due to the high acquisition speed for the measured values averaging of the data is sensible in most cases. If instantaneous values are to be output, averaging must not be switched on.

  • Page 29: Standard Deviation

    These different procedures can be selected for averaging wind velocity as well as wind direction depending on the actual application. Vectorial averaging involves the wind direction for averaging of the wind velocity, and wind velocity for averaging of the wind direction. Both averaged variables, wind velocity and wind direction, thus each undergo evaluation with the other measured variable.

  • Page 30: Measurement In Burst Mode

    7.3.4 Measurement in Burst Mode Another measuring method is measurement in burst mode. Here the ULTRASONIC performs measurement and stores the measured values in the internal data memory. If the internal data memory is full, or the required number of measuring values is achieved, the ULTRASONIC outputs the measured values via the serial interface.
  • Page 31 Starts when ADIO goes low. • Measurement can now be started via the PIN3 (ADIO). Once the measured value buffer is filled, the data will be output automatically. It is not possible to halt output. Working with an additional analogue measured value Burst mode is capable of registering an additional analogue measured value, storing and outputting it with the telegram.
  • Page 32 00AC16 (Activate burst mode) Burst mode configuration with maximum measuring speed, with plausibility check, analog measured value and user-specific output telegram 00KY1 00DM0 (Switch to half duplex mode. ATTENTION!! Adapt wiring of RS485!!!) 00KY1 00AB1 (Activate analogue input) 00TB6 (Data output after measurement: User-specific output telegram) 00UT@12,6,2@,@13,6,2@,@63,5,0@,@7,9,0@\0d (Configuration of user-specific telegram with Wind speed, Wind direction, analogue measuring value,...

  • Page 33: Gust Acquisition

    7.3.5 Gust Acquisition With preset averaging the ULTRASONIC acquires mean values of wind velocity and wind direction. It is expedient, with some application, to output the maximum wind velocity within the mean value period and the respective wind direction.. From software version V1.42 this function is supported. The maximum wind velocity in the mean value buffer is acquired through the command GU (‘gust’) .

  • Page 34: Serial Data Output

    Serial data output The transmission of data via the RS485 interface is known as serial data output. Two modes are available for data transmission: • independent transmission of data • transmission of data via interrogation telegram Independent transmission of the data is selected using the command 00TTXX, with XX standing for the relevant telegram number.

  • Page 35: Fixed Telegram Formats

    7.4.3 Fixed telegram formats A number of predefined telegrams are available to for the independent output of telegrams (commands TT) and data request (Command TR). The detailed structure is described in 'Appendix 1 Predefined data telegrams'. A reference list of telegram formats can be found in Table 6. Telegram name Telegram number Telegram structure...

  • Page 36: Type 1

    7.4.4.1 Type 1 The check sum is the result of the byte wise EXOR link of the bytes output in the telegram. The EXOR link encompasses all bytes between the telegram start character "STX", or "$" with the NMEA telegram and the byte "* " as the identifying character for the start of the check sum. The bytes "STX"...

  • Page 37: Attachment Of Definitions

    7.4.5.2 Attachment of definitions The command UA can be used to attach new definitions at the end. Here it must be borne in mind that the attachment of definitions may require more memory than telegram definition using the command UT. Internally the ULTRASONIC is equipped with over 30 definition blocks.

  • Page 38: Storage Of Definitions

    7.4.5.4 Storage of definitions After the user-defined telegram has been input, it can be stored using the command 00US2. Storage is necessary to ensure that the ULTRASONIC loads the defined telegram on the next restart. 7.4.5.5 Available measured values and data formats The measured values (shown by a number) and the output format of the measured value are defined in the user-specific telegram within the formatting characters '@' Here every measured value is an object of a data type.
  • Page 39 Wind direction NUMBER Normalised wind velocity X-direction NUMBER Normalised wind velocity Y-direction NUMBER Virtual temperature [° C] NUMBER Virtual temperature of X-path [° C] NUMBER This value is not contained in the averaging buffer. The last measured value in the averaging interval is output. If the last measurement fails to generate a valid value, -273,15 displayed) Virtual temperature of Y-path [°...

  • Page 40: Data Formats

    7.4.5.6 Data formats As already described under Available measured values and data formats, every data value is derived from a specific type. To indicate this the types each have their own formatting definition. The formatting string is specified after the measured value number on inputting, with the formatting string and measured value number being separated here by a comma.
  • Page 41 7.4.5.6.2 Data format WHOLE_NUMBER A whole number is a number which is output without commas. However, it can include a sign or /and be in hexadecimal format. Format: @'Measured value','Number of characters','Format'@ where Measured value: see Table 7 Number of characters: number of characters output including any sign Format: format of number shown...
  • Page 42 without sign and decimal with sign and decimal without sign and hexadecimal with sign and hexadecimal The number of characters, decimal places and the 'Format' do not have to be specified; in this case they are padded with the values '3' (Number of characters) '0' (Decimal places) and '0' (Format) .

  • Page 43: Status Information

    The output is AABBCC XOR=00h The XOR link of two identical characters is always 0. Example 2: The proof total is to be generated using the character 'B' via a constant text 'AABBCC'. The output is hexadecimal with 2 characters: 00UTAABBCC XOR=@36,2,3,2,2@h\0d<cr>...

  • Page 44: Extended Status Information

    7.4.6.1 Extended status information The extended status is structured bitwise. The individual bits in the status value have the following meanings: Bit number Function Description Bit 0 General malfunction Averaging time < 10sec An error is output when no new measured value can be determined during a period of 10sec.

  • Page 45: Thies Status

    7.4.6.2 THIES status The THIES status is structured bitwise. The individual bits in the status value have the following meanings: Bit number Function Description Bit 0 General Averaging time < 10sec An error is output when no new measured malfunction value can be determined during a period of 10sec.

  • Page 46: Status Information In Telegram 9

    Bayern Hessen Error status: Bit-Number Function Description Bit 0 General malfunction Averaging time < 10sec An error is output when no new measured value can be determined during a period of 10sec. Averaging time >= 10sec An error is output when, based on a one- second measuring rate, less than 50% of values are contained in the averaging buffer.

  • Page 47: In The Event Of Error

    7.5.1 In the event of error: Error may occur under the following circumstances: Averaging time < 10sec An error is output when no new measured value can be determined during a period of 10sec. (parameter AV) Averaging time >= 10sec An error is output when, based on a one-second measuring rate, less than 50% of values are contained in the averaging buffer.

  • Page 48: Instruments With Housing Heating (4.382X.4X.xxx)

    Effective from the software version V3.09 and the hardware-revision 06-08 the heating is switched on only in case that the supply voltage is above the value, which is stated by parameter “HC”, in addition to the above-mentioned criterions. The parameter HC determines the threshold of the supply voltage when the heating is activated. The supply voltage can be inquired by the „command PW“.

  • Page 49: Enquiry About Software Version

    Enquiry about software version The command SV is used to enquire about the software version. For further information see Command SV 7.10 Operating Hours Counter The instrument provides an operating hours counter, which can be queried via the parameter OH (operating hour).

  • Page 50: Bayern Hessen Mode

    Description of the Status Signal To 1) System start Signal is generated with every restart. To 2) Closing up in configuration mode If the system is set into the configuration mode by the command 00KY1, this is stored. To 3) Description of internal registers PR and PT I for 15 seconds no valid value has been measured the internal registers PR and PT are newly recorded.

  • Page 51: Forcing A Restart

    access is activated by the command <CTR B>ST000KY1<CTRL C> and by <CTR B>ST000AM1<CTRL C> the averaging time is changed. Moreover, in the Bayern Hessen mode different combinations of measuring instrument addresses are available, see Command BH 7.13 Forcing a restart The command RS can be used to force a restart of the ULTRASONIC.

  • Page 52: X-Modem Boot Loader

    00FB00001 or FB00002 is set. 7.15.1 X-Modem Boot loader For the uploading of new firmware via the serial interface the protocol XMODEM CRC is used with a reference length of 128byte per package Necessary are a PC and a terminal program with a respective possibility of setting.

  • Page 53: Fast Boot

    Only when the binary data are completely available on the ULTRASONIC, the new program is written into the program memory. After successful transmission the new program starts automatically. If the transmission is stopped, the ULTRASONIC starts automatically the firmware available after a respective timeout (20s).

  • Page 54: Configuration Of Ultrasonic Anemometer By Customer

    5 -> 9600 8N1* 15 -> 38400 7E1 6 -> 19200 8N1 16 -> 57600 7E1 7 -> 38400 8N1 17 ->115200 7E1 8 -> 57600 8N1 9 ->115200 8N1 Configuration of ultrasonic anemometer by customer The Ultrasonic Anemometer 2 D is factory-set prior to delivery to the customer. Setting is described in the supplementary sheet "Factory Setting".

  • Page 55: Administration Of User Information

    Administration of User Information The instrument provides a data buffer of 32 texts with 32 signs each, where any text can be stored. By the command UD this buffer is administered. The format of entry is 00Udn,xxxx with n: index 1..32 xxxx: text with a maximum length of 32 signs Storing of user information: The command...

  • Page 56: List Of Commands

    List of Commands Command Description T <id>AA<para5> Functions for PIN WG/RXD-( analogue channel A ) Command AA Command AB T <id>AB<para5> Functions for PIN WR/RXD+ ( analogue channel B ) Command AC T <id>AC<para5> Functions for the PIN ADIO (analogue channel C ) Command AM T <id>AM<para5>...
  • Page 57 Command OD <id>OD<para5> Emulation of an ULTRASONIC 1D ( one dimension ) Command OH <id>OH<para5> Query of the operatingl hours counter (operational hours) Command OR <id>OR<para5> Telegram output interval ( output ratio ) Command OS <id>OS<para5> Scaling of wind speed output (output scale ) Command PC <id>PC<para5>...

  • Page 58: Command And Description

    10 Command and description Command AA T <id>AA<para5> Functions for PIN 1 Access: User mode Description: Sets the mode for PIN 1. Values for this parameter can only be changed when the ULTRASONIC runs in half duplex mode (see Command DM). For the signal line PIN1 the following functions can be specified: Parameter description: Analog input signal is not used.
  • Page 59 With a maximum input voltage of 10.0V the digital value output is 65536 (16bit) with a resolution of 152ppm. Self test of analog wind direction output In this state the analog output signal of the wind direction is read back via the analog input signal.
  • Page 60 The PIN3 (ADIO) is used for heating control. A level of <2V switches the heating off, and a level of > 2V activates parameterised heating control, see The PIN3 (ADIO) is used for heating control. A level of >2V switches the heating off, and a level of <...
  • Page 61 Command AN T <id>AN<para5> Analog output mode (Analog output) Access User mode Description: Sets the mode for output of the analog wind direction (WD) and wind velocity (WV). This command can be used to switch between the current output and voltage output. Any change in the value always relates to both outputs (WD and WV) simultaneously.
  • Page 62 Range of values 1…100 Initial value: Command AS <id>AS<para5> Sets the analogue outputs to a fixed value Access: User mode Description: Sets the analogue outputs to a fixed value. The value is stated in increments for the internal AD transformer. Value ‚0’ for AS deactivates the function. Function is used for instrument adjustment.
  • Page 63 Command AV <id>AV<para5> Averaging period (Average) Access: User mode Description: This command can be used to specify the period over which the ULTRASONIC averages its measured values. Given the high measuring speed of up to 4ms for the generation of a measured value, the use of averaging is sensible in most cases. Parameter description: Parameter for AV Selected averaging time...
  • Page 64 Command BH <id>BH<para5> Selects the Bayern Hessen measuring instrument addresses (Bayern-Hessen instrument address) Access: User mode Description: The ULTRASONIC contains several command interpreters. The THIES command interpreter is active in standard mode. Command CI can be used to change the command interpreter.
  • Page 65 Command BR <id>BR<para5> Select baud rate (Baud Rate) Access: User mode Description: The ULTRASONIC communication can be used with different baud rates. The adjustment range is from 1200baud to 921Kbaud. The baud rate can be selected with the commands BR and BX. With the command BR the baud rate is specified in the range from 1200baud to 115200baud.
  • Page 66 Command BS <id>BS<para5> Sets buffer size in burst mode Access: User mode Description: When burst mode is activated, this parameter can be used to select the buffer size. The maximum buffer size is 40,000 complete measuring cycles. Burst mode is activated with command 00AC16 or 00AC17, see Command AC Range of values: 1..40000...
  • Page 67 baud rate, and it stores the parameter internally. If the user is unable to set the new baud rate, the ULTRASONIC must be restarted. It will then automatically set the last valid baud rate (here 9600baud) Example: 00KY1<cr> Opens access key 00BX103<cr>...
  • Page 68 Command CB <id>CB<para5> Calibration value for the analogue current/voltage outputs (offset correction) Access: Configuration mode Description: The initial value of 1000 represents an offset correction of 0. The difference value to the initial value adds (value >1000) or subtracts an offset (value <1000) as a multiple of an increment of the 16 bit LSB-value (approx.
  • Page 69 Command CZ <id>CZ<para5> Scales the output value of the minimum value of the analogue input PIN ADIO ( analogue channel C) Access: User mode Description: The measuring values of the analogue inputs can be output in scaled form. By means of the command CZ the output value is stated for 9,96V input voltage.
  • Page 70 Command DF <id>DF<para5> Set initial values (Default values) Access: Configuration mode Description: Sets all parameters to their initial value. After this command all parameters of the ULTRASONIC are written to their initial value. 1. ATTENTION: The values in the EEPROM are not overwritten. After a restart the ULTRASONIC reads out the 'old' parameters from the EEPROM.
  • Page 71 Command DX <id>EI<para5> Effective acoustic length of the X- measurement path (Distance-X-path) Access Configuration mode Description: Effective acoustic distance between the ultrasonic converters West and East. This parameter is set on factory-adjustment and must not be changed. Range of values 18000…21000 Initial value: 20000...
  • Page 72 Command FB <id>FB<para5> Fast Boot Access: User mode Description: The ULTRASONIC is equipped with a boot loader that is called up automatically on startup of the instrument. The function of the boot loader is to load a new program into the memory of the ULTRASONIC.
  • Page 73 Command HC <id>HC<para5> Voltage threshold for heating suppression ( Heating Control ) Access: User mode Description: With this parameter the minimum supply voltage, when the heating control is activated, is stated in volt. If the supply voltage falls below this value, the heating is de-activated respectively switched off.
  • Page 74 See also Command HC Range of values 0…2 Initial value: Command ID <id>ID<para5> ULTRASONIC ID Access: User mode Description: This command is used to specify the ID of the ULTRASONIC when the parameter XI is set to 0: see Command XI. The ID is used in every telegram of the ULTRASONIC when the command interpreter 'THIES' is selected: see Command CI.
  • Page 75 After a restart the system is always switched to the enquiry mode. If a command is entered incorrectly or an invalid command input, the ULTRASONIC immediately sets the access mode to the enquiry mode. Range of values 0;1; xxxxx Initial value Command MA <id>MA>>para5>...
  • Page 76 Command OD <id>OD<para5> Emulation of ULTRASONIC 1D (One Dimension) Access: User key Description: This parameter is used to specify whether the ULTRASONIC is to behave as a 1D- variant. If the parameter = 1, only the velocity component in a north/south direction is used to determine the velocity.
  • Page 77 Command OS <id>OS<para5> Scaling of wind velocity output (Output Scale) Access: User mode Description: This command is used to specify in which unit of measurement the wind velocity is output in the serial telegram. Different units of measurement are available for this purpose.
  • Page 78 Command PT <id>PT<para5> Periodic ime transmitter (Period Transmit Time) Access: Configuration mode Description: The value sets the transmit time period in the serial register in the analog section of the ULTRASONIC. This value must not be changed under any circumstances. It is factory- set.
  • Page 79 Value range: 0; 10...1000 Initial value: Unit: Seconds Command RP <id>RP<para5> Read parameter data set Access User mode Description With this command a pre-stored data set can be loaded; see also Command SP. After loading a restart is carried out automatically. The data set with the index ‘0’ contains the parameters on delivery and cannot be overwritten.
  • Page 80 Range of values 0..1 Initial value: Command SE <id>SE<para5> Output of the stored system information (system event) Access: Query mode Description Returns the stored system information. There are 178 entries available, before the eldest entries of the circular buffer are overwritten. Events are stored which have been Command SM activated by the command SM.
  • Page 81 registers PR and PT’. A value of SM > 0 delays the boot procedure for approx. 200 ms. This should be taken into consideration when using ‘Fastboot’., see Value range 0..255 Initial value Command SP <id>SP<para5> Store parameter data set Access User mode Description...
  • Page 82 Command TB <id>TB<para5> Telegram in burst mode Access: Interrogation mode Description: The command TB is used to select the telegram which outputs the data after a burst measurement ends. All data telegrams are permissible. See also Command TR Range of values: 1..13 Initial value: Command TC...
  • Page 83 Command TR <id>TR<para5> Telegram request (Transmit request) Access: Enquiry mode Description: The command TR is used to specifically request a telegram from the ULTRASONIC. After interpretation the ULTRASONIC sends back the requested telegram. The instrument specifies a series of predefined telegrams, as well as option for the user to configure his own telegram: see Fixed telegram formats, User-specific telegram.
  • Page 84 Command TW <id>TW<para5> Propagation time delay west sensor (Sensor delay WEST sensor) Access: Configuration key Description: Instrument-dependent delay time of sensor. This parameter is set on factory adjustment and must not be changed. Range of values 0…4096 Initial value: Command UA <id>UA<para5>...
  • Page 85 Parameter description: 0..30 Number of definitions to be deleted at the end of the user-specific telegram. Range of values 0..30 Initial value: No initial value Command US <id>US<para5> Save user-specific telegram definition (User telegram Save ) Access: User mode Description: This command can be used to store the current definition of the user-specific telegram in the EEPROM.
  • Page 86 Command VT <id>VT<para5> Angle-dependent velocity correction (Velocity Table) Access: Configuration mode Description: Switches the calculation on/off which corrects the wind velocity as a function of wind direction. Parameter description: Switches correction off Switches correction on (standard converter) Switches correction on (encapsulated converter) Range of values 0..2 Initial value:...

  • Page 87: Appendix 1 Predefined Data Telegrams

    11 Appendix 1 Predefined data telegrams 11.1 Telegram 1 Wind speed and wind direction Command: TR1 Command: TT1 Telegram construction: Telegram output in case of error (STX)xx.x xxx*xx(CR)(ETX) Character Function Value Character Function Value Start of Text Start of Text nn.n Wind velocity „FF.F“...

  • Page 88: Teleg Ram 3 V4Dt

    11.3 Teleg ram 3 V4DT Wind speed, wind direction, acoustic-virtual temperature Command TR3 Command: TT3 Telegram construction: Telegram output in case of error (STX)xxx.x xxx xxx.x x xx*xx(CR)(ETX) Character Function Value Character Function Value Start of Text Start of Text nnn.n Wind velocity FFF.F...

  • Page 89: Telegram 5 Vdt, Standard Deviation

    A, V A = valid, V = invalid Check sum hexadecimal (2..14 inclusive) Check sum identifier Carrige return 26-27 nn Check sum Line Feed hexadecimal (2..24 inclusive) Carriage return Line Feed 11.5 Telegram 5 VDT, Standard deviation Standard deviation When using the standard deviation the VDT telegram is extended by the standard deviation of the wind speed and wind direction.

  • Page 90: Telegram 7 Vx, Vy, Vt

    11.6 Telegram 7 Vx, Vy, VT Velocity components Vx und Vy Command: TR7 Command: TT07 Telegram construction: Telegram output in case of error (STX)xxx.x;xxx.x;xxx.x;xx;xx(CR)(ETX) Character Function Value Character Function Value Start of Text Start of Text ± ± Wind velocity X Wind velocity nn.n FFF.F...

  • Page 91: Telegram 8 Vd Variant 1

    11.8 Telegram 9 VDT Variant 1 Wind speed, Wind direction, acoustic-virtual temperature, status and check sum (type 2) Command: TR9 Command: TT9 Telegram construction: !iivvvdddttttwfR Character Character Function repertoire Response character 0 ••• 9 Instrument ID 0 ••• 9 Instrument ID 0 •••...

  • Page 92: Telegram 12 Scientific Telegram

    11.10 Telegram 12 Scientific Telegram Scientific Diagnostic Telegram Command: TR12 Command: TT12 Telegram construction: WG;WR;VT;V13;V24;T13;T24; C31; C42; C13; C24;N1;N2;N3;N4;TS;TC Wind speed (7,2;) Wind direction (6,2;) Virtual temperature (6,2;) Speed of distance 13 (7,2;) Speed of distance 24 (7,2;) Virtual temperature of distance 13 (7,2;) (last measured value in averaging interval; -273,15 in case of no valid value ) Virtual temperature of distance 24 (7,2;) (last measured value in averaging interval;...
  • Page 93 Semicolon Semicolon ±nn.n ±99.9 Temperature Temperature Semicolon Semicolon ±nn.n ±99.9 Wind velocity Vx Wind velocity Vx Semicolon Semicolon ±nn.n ±99.9 Wind velocity Vy Wind velocity Vy Semicolon Semicolon nnnnn Number of mean values 99999 Number of mean values Semicolon Semicolon nnnn Status value (extended 9999...

  • Page 94: Technical Data

    12 Technical data Wind velocity Measuring range 0...75 m/s Scaling of analog output freely selectable <= 5 m/s: ± 0,1 m/s (rms, mean over 360° ) Accuracy > 5 m/s: ± 2% of meas. value (rms, mean over 360° ) Resolution 0,1 m/s: In the telegrams:...
  • Page 95 General Internal measuring Up to 400 measurements per second at +20 ° C rate Bus mode Bus mode with up to 99 instruments possible Program update Program update possible in bus mode Temperature range Operating temp. - 50 ... + 70 ° C Storage -50... +80° C Operating voltage Supply 8 V to 78 V DC typical.

  • Page 96: Dimension Drawing

    13 Dimension Drawing North marking Ø 70 Plug / Cable reception Ø 50 mm for in shaft mast tube 1 ½“ in shaft 40 mm 96 - 96 021537/06/10...
  • Page 97 Ø60 North-drilling Ø 5,1 +0,1 8mm deep South-drilling Ø 6; 10mm North- drilling bottom-up Bottom views North- marking North-notch 11 mm wide 60° 9,5 deep North- notch Bottom views 97 - 97 021537/06/10...

  • Page 98: Accessories (Available As Optional Features)

    14 Accessories (available as optional features) Connecting cable, complete 507751 15 m cable with socket outlet on transmitter side. The other end of the cable is equipped with core identification rings. PC-Program Meteo-Online 9.1700.98.000 For graphical display of measured values on a Power supply unit 9.3389.12.100 For power supply to the ultrasonic anemometer...

  • Page 99: Ec-Declaration Of Conformity

    15 EC-Declaration of Conformity Document-No.: 000606 Month: 06 Year: 10 A D O L F T H I E S G m b H & C o. K G Manufacturer: Hauptstr. 76 D-37083 Göttingen Description of Product: Anemometer Ultrasonic 2D 4.3820.00.330 Article No.
  • Page 100 © Copyright: Adolf Thies GmbH & Co KG - Alterations reserved- 100 - 100 021537/06/10...

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