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Related Manuals for AEM Lambrecht meteo u[sonic]
Summary of Contents for AEM Lambrecht meteo u[sonic]
- Page 1 USER MANUAL u[sonic] Ultrasonic Wind Sensor...
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Page 2: Table Of Contents
5.2 Visual inspections and cleaning Transports Disposal Pin assignment Dimensional drawing and side view male connector Wiring diagrams 10.1 Wiring diagram RS-485 10.2 Wiring diagram RS-422 10.3 Wiring diagram SDI-12 11. Grounding NMEA data protocols Modbus protocol 13.1 General 13.2 Data encoding 13.3 Standard configuration - Default 13.4 Available Modbus commands 13.5 Instantaneous values / real-time values ( Input Registers) 13.6 Period data - Average, maximum and minimum (Input Registers) 13.7 Descriptive sensor parameter registers ( Holding Registers) 13.8 Configuration registers (Holding Registers) 13.9 Autoconfiguration SDI-12 Interface Technical data page – aem.eco... -
Page 3: U[Sonic] - Benefits At A Glance
Please note the loss of warranty and non-liability by unauthorized manipulation of the system. You need a written permission of the LAMBRECHT meteo GmbH for changes of system components. These activities must be operated by a qualified technician. The warranty does not cover: Mechanical damages caused by external impacts (e. g. icefall, rockfall, vandalism). Impacts or damages caused by over-voltages or electromagnetic fields which are beyond the standards and specifications in the technical data. 3. Damages caused by improper handling, e.g. by wrong tools, incorrect installation, incorrect electrical installation (e.g. false polarity) etc. Damages which are caused by using the device beyond the specified operation conditions. Introduction The wind sensor u[sonic] is very robust, compact and extremely reliable. When developing this sensor particular consideration has been given to highest quality for fulfilment of meteorological requirements. The system acquires the horizontal air flow and processes the measuring data to the meteorological parameters wind speed and wind direction. The sensor is mounted in a splash water- and dust proof metal housing (IP66 and IP67) and can be immersed temporarily. aem.eco page –... -
Page 4: Start-Up
Static measuring principle for wind measurements means: • Determination of data works without moving measuring elements, i.e. none abrasion and least maintenance. • The wind parameter can be measured also in winter time accurate and precise, because of the electronic controlled heating for the immovable measuring elements. This heating is particularly effective against ice and snow in all climatic zones. • The measuring principle enables very low threshold values, distance- and attenuation constants as well as a very high repetition accuracy. ADVANTAGES OF THE SENSOR • The built-in test function of the station, enabled by the tight integration of the meteorological sensors into the enclosure, can perform cyclic self-testing and notify the user of erroneous data or failure. • The compact design of the sensor u[sonic] with three meteorological parameters is eliminating the installation work significantly. Start-up Wind can be represented by a vector quantity. For a complete description of the wind it is necessary to specify its speed and direction. The two components are subject to spatial and temporal variations; thus, strictly speaking, they are valid only for the site where the measuring instrument is installed. We therefore recommend selecting the place of installation very carefully. 4.1 Installation conditions 4.1.1 General For professional wind measurements location and height of the wind sensor are important for accurate, correct results and representative wind conditions. Ideally, the sensor should be installed in 10 m above the ground on a mast. This may be buildings, trees, tall towers, lifting cranes, moving vehicles, aircrafts, helicopters and other obstructions. page – aem.eco... -
Page 5: Tools And Installation Material
| u[sonic] In case of mobile measurements at vehicles often above mentioned conditions are not practicable. Then you have to find compromises. Generally, wind measuring instruments should not measure the specific wind conditions of a limited area, but indicate the typical wind conditions of a wider area. The values measured at different places must be comparable. Thus, when installing the sensor you should make sure the place of installation is not under the lee of great obstacles. The distance between the obstacles and the sensor should be 10 times the height of the obstacles (this corresponds to the definition of an undisturbed terrain). If an undisturbed terrain of this kind does not exist the sensor must be put up at a height of at least 6 m above the obstacle height. If the sensor must be installed on a roof top the place of installation must be in the middle of the roof to avoid predominant wind directions. If you want to measure both wind direction and wind speed, the sensors should be avoided. The sensor u[sonic] easily meets this requirement. The place of installation should not be in the operation fields of radar devices (radar scanners or radar transmitters), generators or antennas. We recommend a minimum distance of 2 m to these installations. Furthermore a minimum distance of 5 m to MF-/ HF- and Satcom- (e. g. Inmatsat, VSat) antennas has to be kept. The maximum electric field intensity may not exceed 10 V/m (tested according to EMC standard). When indicated a greater distance should be kept. 4.2 Tools and installation material There are no special tools or materials required for the installation works. All work can be carried out with standard tools, e.g. Allen key size 4. 4.3 Unpacking the sensor The sensor is delivered in separate packaging, carefully protected against mechanical impact, to avoid damage during transport. The package contains the following items: • Sensor u[sonic] • User manual Accessories: (depending on the scope of delivery, packed separately if necessary) Connection cable with cable plug 4.4 Incoming inspection Please check the scope of delivery for completeness and possible transport damage. Please report any complaints immediately to us in writing. aem.eco page –... -
Page 6: Energy Supply
Heating power Max. current consumption at 24 VDC 60 W 2.5 A 120 W 5 A 240 W (standard) 10 A By default, the maximum heating power is set to 240 W. The other heating power levels can be factory-set upon request. 4.6 Installation work (short description) The sensor is installed in three steps: Mounting the cable at the sensor and if necessary draw the cable through the mast. Mounting the sensor at the mast, but before tightening the screws you must align the sensor to the north. 3. Attaching the cable to the power supply and the signal acquisition system. 4.7 Mounting the sensor The sensor can be installed on a standard pipe with an outer diameter of 50 mm and an inner diameter of maximum 40 mm. Before tightening the two 8 mm-socket screws and attaching the sensor you have to draw the cable through the pipe and align the sensor into driving direction. For this purpose the housing is marked accordingly (see drawing). Before the screws of the sensor are tightened, the sensor is adjusted to north. In addition the sensor has a pin for the north direction. You can put this pin into the nick at the mast (if available). If needed you can turn in or unscrew the pin by means of Allen key. Please pay attention to a firm mounting of the sensor at the mast! 4.7.1 Sensor northing For wind direction measurements the north mark on the sensor must be aligned with the geographical north direction. To adjust the wind sensor in a firm and correct manner into the north direction this item is equipped with an page – aem.eco... -
Page 7: Power Supply And Signal Cables
If you have any questions regarding installation, please contact us. The external connection is via central connector which is located in housing base. For further details about electrical connection please see chapter “Connecting diagrams”. If the sensor is mounted in correct manner and connected with the right cable (accessory), you can attach the wires to power supply and signal outputs to data acquisition equipment (computer). The typical power supply requirements of the u[sonic] sensors are 24 VDC with a typical current drain of 50 mA. The input range is 6...60 VDC or 12...42 VAC. The heater of the u[sonic] has to be supplied with 24 V AC/DC. In standard configuration the heating power is 240 W with a current drain of 10 A at 24 VDC. The signal output of the sensors is conform to the requirements of RS-422 standard in talker mode. The line drivers are capable of transmitting data over cable lengths up to 1,220 meters (4,000 feet). This maximum distance will vary depending on the quality of the used cables. When the power supply of the sensor is switched on, after 2 seconds the sensor cyclically starts sending data protocols. 4.7.3 Safety regulations Because the wind sensor often is mounted on exposed locations in dangerous heights the installation personnel has to pay attention to the relevant safety regulations for such works. During the electrical installation and termination works the external circuit-breaker must be switched off. It is not permitted to open those housings by unauthorized persons! aem.eco page –... -
Page 8: Heating Control
LAMBRECHT meteo | u[sonic] 4.7.4 Heating control The integrated, intelligent heating of the u[sonic] also ensures that the sensor is kept free of ice and snow during winter operation and in locations with critical ambient conditions. On default, the heating status of the sensor is set to “On” and “Control PIN No Function”. Different operating modes are available for controlling and monitoring the heating under moderate temperature conditions. The respective function can be set in the “u[sonic] Commander” configuration software. 4.7.5 Download of updates On our homepage (https://www.lambrecht.net) you will find free firmware and the configuration software “Commander” under “Service” in the “Download Portal” in the “Free Software Tools & Firmware” section. Select the appropriate software for your product and benefit from new functions and product enhancements from LAMBRECHT meteo development after downloading page – aem.eco... -
Page 9: Maintenance
5.1 Regular maintenance and calibrations The sensor u[sonic] is service reduced and designed for a very long lifetime. Recommended is a regular visual check regarding dirt of surface caused by the weather and if so, to clean up. If reference measurements should be necessary stringently must be noted that a comparability of the measured values is given only if the measurements take place under same conditions. I.e. the reference equipment must be used very close to the sensor! The sensor is a measuring instrument and thus apply user specific standards regarding period of recalibration. Recommendation: 2 years. 5.2 Visual inspections and cleaning The use of the sensor under the respective environmental conditions requires certain steps. It is thus recommendable to clean the outside of the housing within specific intervals. The intervals are dependant on the environmental conditions and the degree of soiling. We recommend a regular sight check. In case you should be faced with any specific problems please contact the LAMBRECHT service under: Tel: +49 (0)551 49580 or E-Mail: support-lambrecht@aem.eco Transports In case the sensor should be shipped or transported by you, it has to be packed securely to avoid mechanical impact or other damages. Disposal LAMBRECHT meteo GmbH is listed and registered at the Stiftung Elektro-Altgeräte Register ear under: WEEE-Reg.-Nr. DE 45445814 In the category of monitoring and control instruments, device type: “Monitoring and control instruments for exclusively commercial use”. Within the EU The device has to be disposed according to the European Directives 2002/96/EC and 2003/108/EC (Waste Electrical and Electronic Equipment). Do not dispose the old device in the household waste! For an environmentally friendly recycling and disposal of your old device, contact a certified disposal company for electronic waste. Outside the EU Please follow the regulations in your country regarding the appropriate disposal of waste electronic equipment. -
Page 10: Pin Assignment
C C r r o o s s s s - - s s e e c c t t i i o o n n [ [ m m m m ² ² ] ] 0,25 black 0,25 brown 0,25 orange 0,25 yellow 0,25 green 0,25 blue violet page – aem.eco Datum Name Benennung Revision 28.03.2017 Krell Bearb. Connection cable, 8-pole L = 15 m Gepr. -
Page 11: Dimensional Drawing And Side View Male Connector
+ 24 V AC / DC nominal + 24 V AC / DC nominal blue - 24 V AC / DC nominal - 24 V AC / DC nominal - 24 V AC / DC nominal violet aem.eco page –... -
Page 12: Wiring Diagrams
LAMBRECHT meteo | u[sonic] Wiring diagrams 10.1 Wiring diagram RS-485 page – aem.eco... -
Page 13: Wiring Diagram Rs-422
LAMBRECHT meteo | u[sonic] 10.2 Wiring diagram RS-422 aem.eco page –... -
Page 14: Wiring Diagram Sdi-12
LAMBRECHT meteo | u[sonic] 10.3 Wiring diagram SDI-12 page – aem.eco... -
Page 15: Grounding
The warranty for the device is excluded if damage occurs due to improper handling. This particularly includes the absence of proper grounding. Correct grounding according to DIN VDI/VDE 0100 is essential for the safety and functionality of the device. If you have any questions regarding installation, please contact us. The following figure shows the sequence for installing a grounding wire with a lug through the grounding screw on the sensor. Figure: Example of an grounding cable aem.eco page –... -
Page 16: Nmea Data Protocols
WIND DIRECTION AND WIND SPEED Example of data sequence with comma separated fields: $WIMWV,357.0,R,5.2,M,A*CS<CR><LF> field delimiter: , (comma) header: $WIMWV wind direction: 0.0...360.0 R: relative wind direction wind speed: 0.1...85.0 M metric units m/s status A (valid) / V (not valid) stop delimiters: <CR> <LF> error code: WD 999.9 error code: WS 999.9 MESSAGE STRING WIMTA AIR TEMPER ATURE Example of data sequence with comma separated fields: $WIMTA,-25.0,C*CS<CR><LF> field delimiter: , (comma) header: $WIMTA temperature: -40.0...+70.0 C: °C stop limiters: <CR> <LF> error code: 999.9 REMARK The development of a NMEA decoder should not be proceeded from firm field lengths. The NMEA definition proceeds from a variable field length. The comma character (‘,’) serves as field disconnecting switch. Numeric values in a field can be represented differently. In case a field is not sent, it has a length of 0 characters ( ,,). The check sum “CS” is covered to two ASCII characters hexadecimal value. “CS” calculated by XOR operation of each characters in the Sentence between “$” and “*”, but excluding “$” and “*”. <CR> carriage return (hex0D) <LF> linefeed (hex 0A) Further protocols available on request. page – aem.eco... -
Page 17: Modbus Protocol
LAMBRECHT meteo | u[sonic] Modbus protocol Note: Modbus must be configured in default. This manual covers the general Modbus specification common to all Modbus sensors from LAMBRECHT meteo. The manual allows easy operation of all LAMBRECHT meteo Modbus sensors. Some sensors of the Modbus family offer additional registers and functions, which are described in separate documents via the registers and functions described here. The registers and functions described in this manual are sufficient for general operation of Modbus sensors in a weather station or PLC. 13.1 General The LAMBRECHT meteo Modbus sensors follow the specification of the Modbus organization: “MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b3” (see www.modbus.org). 13.2 Data encoding MODBUS uses the “Big-Endian” format for addresses and data. This means that if a value is transmitted with a number format which is larger than a single byte, that the “most significant byte” is sent first. Example Big-Endian: Register size value 16 - bits 0x1234 is transmitted in the sequence: 0x12 0x34. To obtain the real measuring value, divide the received register value by the divisor. Values of -9999 indicate an internal sensor error. 13.3 Standard configuration - Default Baud rate: 19200 Baud Byte frame: 8E1 (1 start bit, 8 data bits, 1 parity bit (even parity), 1 stop bit) RTU Sensor address: aem.eco page –... -
Page 18: Available Modbus Commands
Checksum Query => Master Slave 13 Read Input Register (4) Address=30001, Quantity of Register=1 OK:C57A Transmission Source Dest Function Func Desk Data Checksum Response <= Slave 13 Master Read Input Register (4) Byte count=2 00 1F OK:F9E8 page – aem.eco... -
Page 19: Period Data - Average, Maximum And Minimum (Input Registers)
Checksum Query => Master Slave 1 Read Input Register (4) Address=30002, Quantity of Register=1 OK:98A Transmission Source Dest Function Func Desk Data Checksum Response <= Slave 1 Master Read Input Register (4) Byte count=2 00 14 OK:3FB9 aem.eco page –... -
Page 20: Descriptive Sensor Parameter Registers ( Holding Registers)
Slave 13 Master Read Holding Register (3) Byte count=16 OK:6BE8 13.8 Configuration registers (Holding Registers) Register Parameter name Allowed values Quantity of registers Access type 40001 Modbus device address Write only 40200 Baud rate 96 = 9600 Write only 192 = 19200 384 = 38400 40201 Parity 1 = even Write only 0 = none The device must be restarted after each change of a setting! page – aem.eco... -
Page 21: Autoconfiguration
Query => Master Slave 5 Write Multiple Register (16) Address=40001, Quantity=1 00 01 OK:4806 Transmission Source Dest Function Func Desk Checksum Response <= Slave 5 Master Write Multiple Register (16) Address=40001, Quantity=1 OK:097E 13.9 Autoconfiguration All LAMBRECHT Modbus sensors offer the experienced user the possibility to implement an auto-configuration in his Modbus master based on additional information stored in the sensor. The necessary information can be found in the document “Lambrecht_Modbus_Autoconfiguration”. aem.eco page –... -
Page 22: Sdi-12 Interface
Start Measurement and Request CRC atttn<CR><LF> Start Concurrent Measurement atttnn<CR><LF> aCC! Start Concurrent Measurement and atttnn<CR><LF> Request CRC checksum aD0! Send Data (Buffer 0) a<Werte<CR><LF> a<Werte><CRC><CR><LF> Start Verification atttn<CR><LF> Resetting the Addresses a<CR><LF> a = Address of the corresponding sensor Standard sensor addresses = 0 SDI-12 commands always start with the address of the appropriate sensor. Therefore all other sensors on the same bus will ignore these commands. SDI-12 commands end with ‘!’. All answers from sensors start with its address, too, but end with the ASCII characters ‘Carriage Return’ <CR> and ‘Line Feed’ <LF>. The SDI-12 protocol is based on the ASCII character set. The baud rate of the SDI-12 protocol is 1200 Bd and has the byte frame format: start bit 7 data bits (least significant bit transmitted first) parity bit (even parity) stop bit Acknowledge Active - a! This command ensures that the sensor responds to requests. Basically it asks the sensor to confirm that it is connected to the bus. The sensor returns its address and <CR><LF>. page – aem.eco... - Page 23 0<CR><LF> 1<CR><LF> Send Identification - aI! The command aI! is used to ask the sensor for its model number and firmware version. Syntax Command Answer a14LMGmbH151647011.1<CR><LF> a – Sensor address a – Sensor address I – Command “Send Identification” a14LMGmbH151647011.1 14 – 2 characters SDI-12 version no. 14 = version 1.4 LMGmbH15 – 8 characters manufacturer’s name (= Lambrecht meteo GmbH) 164701 – 6 characters sensor type 1.1 – Firmware version ! – End of command <CR><LF> – End of answer Example: Command Answer 014LMGmbH1514582S1.1<CR><LF> 114LMGmbH1514582D1.1<CR><LF> Change address - aAb! The factory setting for the address is “0”.If there are several sensors connected to one bus, the sensor address can be changed with the command “aAb!”. The address is always a single ASCII character. Standard for addresses are the ASCII characters “0” to “9” (decimal 48 to 57). If there are more than 10 sensors connected to one bus, using the characters “A” to “Z” (decimal 65 to 90) and “a” to “z” (decimal 97 to 122) is allowed. The sensor answers with its new address and <CR><LF>. After the address is changed, one should not send further commands to the sensor for a period of one second (see also “SDI-12 Standard, Version 1.4, 2017”). aem.eco page –...
- Page 24 Request” and ignores signals to interrupt the measurement. Prior to the returned waiting time the data logger must not send further commands. After expiration of the waiting time the data can be requested with the commands aD0! and aD1! (see “Send Data”). The data will not be overwritten until the next C, M, or V command and can be read several times until then. Syntax Command Answer a0003<CR><LF> a – Sensor address a – Sensor address M – Command “Start Measurement” 000 – Seconds the sensor needs until the measured data can be returned 3 – Number of provided measured data ! – End of command <CR><LF> – End of answer Example: Command Answer 10003<CR><LF> The measured data can be requested with the commands aD0! and aD1! (see “Send Data”). Start Measurement and Request CRC - aMC! Same command as aM! but in addition to the generated data the sensor returns a 3-digit CRC checksum. For information on how the CRC checksum is generated, please consult “SDI-12 Standard, Version 1.3, 2012, chapter 4.4.12”. page – aem.eco...
- Page 25 The “Concurrent Measurement” enables the data logger to measure simultaneously with multiple sensors on the same bus. The “aC!” command requests the sensor to process the available measurement data and write them to an output string. Unlike the standard sensors described in the SDI-12 documentation, the u[sonic] measures continuously. This is why the u[sonic] always responds with “a000”. The data is therefore immediately available. This is also the reason why the u[sonic] does not send a “service request” and ignores measurement interruption commands. The data can be retrieved with the command “aD0!” (see under “Send Data”). The data is not overwritten until the next “C” or “M” command and can be retrieved several times. Syntax Command Answer a00014<CR><LF> a – Sensor address a – Sensor address C – Command “Start Concurrent Measurement” 000 – Seconds the sensor needs until the measured data can be returned (= 0 s – Data immediately available) 14 – Number of provided measured data ! – End of command <CR><LF> – End of answer Example: Command Answer 100014<CR><LF> The measured data can be requested with the command “aD0!” (see “Send Data”). Start Concurrent Measurement with CRC - aCC! Same command as “aC!” but in addition to the generated data the sensor returns a 3-digit checksum. For information on how the CRC checksum gets generated, please consult ‘SDI-12 Standard Version 1.4, 2017, chapter 4.4.12’. aem.eco page –...
- Page 26 D – Command “Send Data” <values> – Requested data separated by 0 – Request for the data in buffer 0 respective sign (“+” or “-”) 1 = buffer 1 2 = buffer 2 ! – End of command <CR><LF> – End of answer Example: Command Answer 000004<CR><LF> 0D0! 0+0.1+0.1+0.1+0.1<CR><LF> Syntax for measurements with aCC! or aMC! Command Answer aD0! a<values><CRC><CR><LF> a – Sensor address a – Sensor address D – Command “Send Data” <values> – Requested data separated by 0 – Request for the data in buffer 0 respective sign (“+” or “-”) 1 = buffer 1 <CRC> – 3-digit CRC checksum ! – End of command <CR><LF> – End of answer page – aem.eco...
- Page 27 °C Acoustic virtual temperature Minimum value °C Acoustic virtual temperature Maximum value °C Acoustic virtual temperature Average value °C Status code 16 bit value Error code 16 bit value Minimal, maximum and average value refer to the time since last C! or CC! command. Syntax for measurements with command “aC!” or “aM!” aem.eco page –...
- Page 28 00 08 Reflection detection |||||||| ||||_____ 4 00 10 Gain adjusted in case of signal interference |||||||| |||______ 5 00 20 Measurement quality (less than 50% on average) Description for aM! and aMC! Description windspeed.mom winddirection.mom virtual_temperature.mom page – aem.eco...
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Page 29: Technical Data
Standards • NMEA 0183 • VDE 0100 • Low voltage guide line: 72/23 EWG • EMC/ EMI: DIN EN 60945 and DIN EN 61000-4-2, -3, -4, -5, -6, -11 • Protection class: DIN EN 60529 Accessories (please order separately) ID 32.16470.060000 Sensor cable, 15 m, 8-pin, M16 connector Copyright © 2025 LAMBRECHT meteo GmbH. All rights reserved. usonic_b-de.indd 29.25 Information in this document subject to change without notice. Photo copyright: © Peera - Adobe stock LAMBRECHT meteo GmbH Friedländer Weg 65 Tel +49-(0)551-4958-0 37085 Göttingen E-Mail info-lambrecht@aem.eco Germany Internet www.lambrecht.net aem.eco page –...
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