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DeltaOHM HD52.3D... series Operating Manual

Ultrasonic anemometers
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Companies / Brands of GHM

Operating manual

Ultrasonic anemometers
HD52.3D... series
www.deltaohm.com
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  • Page 1: Operating Manual

         English Operating manual Ultrasonic anemometers HD52.3D… series Companies / Brands of GHM www.deltaohm.com Keep for future reference.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ....................3 .................... 3 VAILABLE VERSIONS TECHNICAL SPECIFICATIONS ................4 DESCRIPTION ....................... 5 MEASURING PRINCIPLE OF WIND SPEED AND DIRECTION ........6 INSTALLATION ..................... 7 ................8 LIGNMENT OF THE INSTRUMENT ..................9 LECTRICAL ONNECTIONS 5.2.1 RS232 ..............

  • Page 3: Introduction

    1 INTRODUCTION The instruments of the series HD52.3D… are 2-axes ultrasonic static anemometers for the measurement of: • Wind speed and direction, U-V Cartesian components of wind speed, • Relative Humidity and temperature (optional), • Global solar radiation (optional), • Barometric pressure (optional).

  • Page 4: Technical Specifications

    2 TECHNICAL SPECIFICATIONS Wind speed Used sensor Ultrasounds Measuring range 0…60 m/s Resolution 0.01 m/s Accuracy ± 0.2 m/s or ± 2%, the greatest (0…35 m/s), ± 3% (> 35 m/s) Wind direction Used sensor Ultrasounds Measuring range 0…359.9° Resolution 0.1°...

  • Page 5: Description

    3 DESCRIPTION 1. Pyranometer 2. Ultrasonic sensors for the measurement of wind speed and direction 3. Protective shield from solar radiation for relative humidity and temperature sensors 4. Fixing clamp to Ø 40 mm mast Note: in the models measuring barometric pressure, the pressure sensor is inside the instru- ment.

  • Page 6: Measuring Principle Of Wind Speed And Direction

    4 MEASURING PRINCIPLE OF WIND SPEED AND DIRECTION Wind speed and direction are determined by measuring the time taken by ultrasonic pulses to cover the distance from the transducer that generates the pulse to the receiving transducer. The instrument uses 2 pairs of transducers oriented along two orthogonal axes. Detecting the wind speed along two axes allows to determine not only the intensity but also the wind direc- tion.

  • Page 7: Installation

    5 INSTALLATION To install the instrument, pass the connection cable inside the support mast and connect the 19-pole M23 female connector of the cable to the 19-pole M23 male connector situated at the bottom of the instrument. Ensure connection stability by tightening the connector external nut. Align the instrument to the desired direction (see par.

  • Page 8: Alignment Of The Instrument

    If the instrument is installed on a building, the height of the instrument should be at least 1.5 times the minimum value between the height of the building and the roof longest diagonal. Mount the instrument far from magnetic materials and devices that generate magnetic fields (electric motors, electric power cables, electric transformers, radars, radio transmitters etc.) in order to prevent faulty indications from the magnetic compass.

  • Page 9: Electrical Connections

    LECTRICAL ONNECTIONS All connections are performed through a 19-pole M23 male connector situated at the bottom of the instrument. The figure and the table below show numbers and function of the connector contacts: Reference Visible side male connector Connector TAB. 5.A – Electrical connections Pin number Symbol Description...

  • Page 10: Rs232 Serial Connection

    5.2.1 RS232 SERIAL CONNECTION RS232 Port Reference of female connector solder side Power supply For RS232 connection, TX-, RX+ and serial GND signals (pin 9, 3 and 8 of M23 connector) are used, to be connected respectively to RX, TX and GND signals of RS232 port on PC (pin 2, 3 and 5 of 9-pole SubD connector).

  • Page 11: Rs422 Serial Connection

    signal repeater between a segment and the successive one. Line termination should be applied at both ends of each segment. The maximum length of the cable depends on the transmission speed and the cable character- istics. Typically, the maximum length is 1200 m. The data line should be kept separated from any power lines in order to prevent interference with the transmitted signal.

  • Page 12: Sdi-12 Serial Connection

    5.2.4 SDI-12 SERIAL CONNECTION SDI-12/USB or SDI-12/RS232 Reference of female converter or connector solder side data logger with SDI-12 input Other sensors with SDI-12 output Power supply SDI-12 standard has three connection wires: power supply +12V, data line and ground. Up to 10 sensors can be connected in parallel, each of them identified by its own address.

  • Page 13: Connection To The Rs485 Port Of Hd32Mt.1 Data Logger

    5.2.6 C RS485 HD32MT.1 ONNECTION TO THE PORT OF DATA LOGGER The instruments of the series HD52.3D… can be directly connected to the RS485 communica- tion port of Delta OHM HD32MT.1 data logger. Connection is performed as follows: Power supply Serial GND TX+ signal of the anemometer should be connected to +D input of data logger.

  • Page 14: Connection Of Rs52 Cable

    5.2.7 C RS52 ONNECTION OF CABLE If the PC is not equipped with RS232 serial ports, but with USB ports only, the RS52 adapting ca- ble (with built-in USB/RS232 converter) should be interposed between the PC and the instrument. RS52 cable Reference of female connector solder side To use the RS52 cable, the drivers included in the CD-ROM supplied with the instrument...

  • Page 15: Connection Of Cp52. X Cable

    5.2.9 C CP52. ONNECTION OF X CABLE The table below shows numbers and function of the optional 12-pole CP52.x cable wires: TAB. 5.B – Connection of CP52.x cable CP52.x cable Connector (12 poles) Symbol Description pin number wire number Instrument power supply positive RX SDI Data line for SDI-12 connection RX +...

  • Page 16: Configuration

    6 CONFIGURATION Configuration mode allows to read the instrument’s general info (firmware version, calibration date, serial number), to set the operation mode, to read and set the instrument operation pa- rameters. To configure the instrument, a RS232 serial connection to a PC should be performed (see pa- ragraph 5.2.1).

  • Page 17: Serial Commands

    ERIAL OMMANDS The tables below describe the serial commands that allow to read the current instrument con- figuration and change the operation parameters. Measuring units: Command Reply Description CGUVn &| Sets measuring unit of wind speed: m/s if n=1 cm/s if n=2 km/h if n=3 knot if n=4 mph if n=5...
  • Page 18 Parameters for proprietary RS232 and RS485 modes: Command Reply Description CU1Ac &| Sets the address for proprietary RS485 mode to c value The address is an alphanumeric character ranging within 0…9, a…z, A…Z Default : 0 RU1A & c| Reads the address for proprietary RS485 mode set in the instrument CU1Bn &|...
  • Page 19 Command Reply Description CU2Rnnnn &| Sets transmission interval of string with measurements in proprietary RS232 mode to nnnn seconds The interval should range within 1 and 3600 seconds Default : 1 second RU2R & nnnn| Reads transmission interval of string with measurements in proprietary RS232 mode 2 : M EASUREMENTS...
  • Page 20 Parameters for NMEA mode: Command Reply Description CU4Bn &| Sets Baud Rate for NMEA mode to: 2400 if n=1 4800 if n=2 9600 if n=3 19200 if n=4 38400 if n=5 57600 if n=6 115200 if n=7 Default : 4800 (n=2) RU4B &...
  • Page 21 Parameters for MODBUS-RTU mode: Command Reply Description CU5Annn &| Sets MODBUS address to nnn The address should range within 1 and Default : 1 RU5A & nnn| Reads MODBUS address set in the instru- ment CU5Bn &| Sets the Baud Rate for MODBUS mode to: 9600 if n=3 19200 if n=4 Default : 19200 (n=4)
  • Page 22 Parameters for SDI-12 mode: Command Reply Description CU3Ac &| Sets the SDI-12 address to c value The address is an alphanumeric character ranging within 0…9, a…z, A…Z. Default : 0 RU3A & c| Reads the SDI-12 address set in the instru- ment General parameters: Command...
  • Page 23 3 : W IND SPEED THRESHOLD VALUE If the wind speed is very low, the determination of the direction can result inaccurate. The in- strument allows to set the threshold value of speed below which the direction value is frozen on the last acquired value.
  • Page 24 Analog outputs: Command Reply Description CAF1nn &| Sets offset and direction of the analog outputs Standard if nn=00 [ex. 4…20 mA , 0...1 V , 0...5 V , 0...10 V] Without offset if nn=01 [ex. 0…20 mA] With offset if nn=02 [ex.
  • Page 25 Command Reply Description & n| Reads the value corresponding to the wind speed analog output full scale V COMPONENTS By selecting the U and V components, the speed value associated to the initial scale of the two analog outputs is equal to the opposite of the speed value associated to the full scale of the outputs.

  • Page 26: Proprietary Rs232 Mode

    7 PROPRIETARY RS232 MODE In proprietary RS232 mode, the instrument sends automatically the acquired measurements at regular intervals. The interval is factory-set to 1 second and is configurable from 1 to 3600 seconds. To change the interval, you should enter in configuration mode and send the com- mand CU2Rnnnn, where nnnn indicates the interval value in seconds (see chapter 6 “CON- FIGURATION”...

  • Page 27: Proprietary Rs485 Mode

    8 PROPRIETARY RS485 MODE In proprietary RS485 mode, the instrument sends the acquired measurements only if re- quested by the PC. To use this mode, you must connect to a RS485 or RS422 serial port. Communication parame- ters should be set in the PC or data logger as follows: •...

  • Page 28: Nmea Mode

    9 NMEA MODE NMEA protocol, mainly used in the nautical field and in satellite-based navigation systems, specifies that only one of the devices connected can send data, while the others can only act as recipients. In NMEA mode, the instrument sends automatically the acquired measurements at regular in- tervals.
  • Page 29 If the instrument model is not equipped to measure some of the quantities indicated in the general format, the relevant fields will be empty and multiple consecutive commas will appear to indicate the missing fields. The previous string doesn’t include the measurement of solar radiation. Models equipped with a pyranometer provide to send the measurement with a second string continuously alternating to the former: $IIXDR,a,x.x,a,c--c*hh<CR><LF>...

  • Page 30: Modbus-Rtu Mode

    10 MODBUS-RTU MODE In MODBUS-RTU mode, the instrument sends the acquired measurements only if specifically requested by the PC. The mode is available with RS232, RS485 and RS422 serial connections. Note: with the RS232 connection, only one instrument can be connected to the PC; the option is useful to perform tests in MODBUS mode in the case a RS232/RS485 converter is not available.
  • Page 31 The instrument sends the requested data after elaboration of the received command. The reply structure is identical to the message sent by the “Master” unit: <Address><Function><Data><CRC> with <Address> = address of the answering instrument (1 byte) <Function> = type of operation the instrument has performed (1 byte) <Data>...
  • Page 32 The value of a measurement is memorized in a 16-bit register and therefore it always needs a 2-byte length. The most significant byte precedes the less significant one. The table below lists the available quantities with the corresponding register number: TAB.
  • Page 33 For quantities with configurable measurement unit, the measurement value is expressed in the unit set in the instrument. If the request involves the reading of at least one parameter not listed in the table, the in- strument replies with the following error message. Reply Value Length...
  • Page 34 INSTRUMENT ERROR CONDITIONS (function 07h) The function code 07h allows to read the 8-bit register containing information about error con- ditions of the instrument. Each register bit corresponds to an error condition: • Bit 0: Error of wind speed measurement; •...
  • Page 35 Reply Value Length Description Function: 1 byte Command of information reading Data: 1 byte Fixed value (MEI - Modbus Encapsulated Interface type) 1 byte Fixed value (Type of identification - basic) 1 byte Fixed value (Conformity level – basic – fields not individually accessible) 1 byte Fixed value (No other fields are available)

  • Page 36: Sdi-12 Mode

    Example of reply: 113DeltaOhmHD523D103P147R with: 1 = address of the instrument 13 = compatible SDI-12 version 1.3 DeltaOhm = name of manufacturer HD523D = model of HD52.3D series 103 = firmware version 1.0.3 P147R = instrument version HD52.3DP147R - 36 HD52.3D...
  • Page 37 Command Instrument reply Description aAb! b<CR><LF> Change of instrument address. where: Note: if character b is not an acceptable address, b = new the instrument answers with a in the place of b. address a<CR><LF> Request for instrument address. If more than a sensor is connected to the bus, a conflict will occur.
  • Page 38 Command Instrument reply Description unit (wind speed, temperature and barometric pressure), the measurement value is expressed in the unit set in the instrument. <DP> measurement has the same format as tem- perature. If a quantity measurement is in error condition, a negative value consisting in a series of 9 is sent.

  • Page 39: Dimensions

    12 DIMENSIONS The figures below indicate the dimensions of the instrument in mm. Mast Mast HD 52.3D HD 52.3DP Wind speed and direction. Wind speed, wind direction and solar radiation. HD 52.3D4 HD 52.3DP4 Wind speed, wind direction and barometric Wind speed, wind direction, solar radiation and pressure barometric pressure.

  • Page 40: Instrument Storage

    13 INSTRUMENT STORAGE Instrument storage conditions: • Temperature: -40...+65 °C. • Humidity: less than 90 %RH no condensation. • In storing, avoid locations where: • There is a high humidity level. • The instrument is exposed to direct sunlight. • The instrument is exposed to a high temperature source. •...

  • Page 41: Order Codes

    15 ORDER CODES HD52.3D… 2-axes ultrasonic static anemometer for the measurement of wind speed and direction, U-V Cartesian components of wind speed, relative humidity and temperature (optional), global solar radiation (optional) and barometric pres- sure (optional). Equipped with compass. RS232, RS485, RS422 and SDI-12 serial outputs, NMEA, MODBUS-RTU and SDI-12 communication protocols.
  • Page 42 CP52.15 12-pole connecting cable with 19-pole M23 female free connector on one end, open wires on the other. Length 15 m. CP52.20 12-pole connecting cable with 19-pole M23 female free connector on one end, open wires on the other. Length 20 m. CP52.C Additional 19-pole M23 female free connector.

  • Page 44: Serial Number

    GU AR AN T E E TERMS OF GUARANTEE All DELTA OHM instruments are subject to accurate testing, and are guaranteed for 24 months from the date of purchase. DELTA OHM will repair or replace free of charge the parts that, within the warranty period, shall be deemed non efficient according to its own judgement.
  • Page 45 Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | info@deltaohm.com The quality level of our instruments is the result of the constant development of the product. This may produce some differences between the information written in this manual and the instrument you have purchased.
  • Page 46 GHM GROUP – Delta OHM | Delta Ohm S.r.l. a socio unico Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | info@deltaohm.com V1.11 05/07/2017...

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