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Summary of Contents for GHM Delta OHM HD53LS Series
- Page 1 English Operating manual Ultrasonic anemometers HD53LS… www.deltaohm.com Keep for future reference.
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Page 2: Table Of Contents
TABLE OF CONTENTS INTRODUCTION ....................3 TECHNICAL SPECIFICATIONS ................4 MEASURING PRINCIPLE OF WIND SPEED AND DIRECTION ........5 INSTALLATION ..................... 6 ................7 LIGNMENT OF THE INSTRUMENT ..................8 LECTRICAL ONNECTIONS 4.2.1 RS232 ..............9 SERIAL CONNECTION 4.2.2 RS485 HD53LS.S) .......... -
Page 3: Introduction
1 INTRODUCTION HD53LS… is a series of 2-axis ultrasonic static anemometers for the measurement of: Wind speed and direction • U-V Cartesian components of wind speed • Wind Gust (only HD53LS.S) • The average of wind speed and direction over a period configurable up to 10 minutes is calcu- lated. -
Page 4: Technical Specifications
2 TECHNICAL SPECIFICATIONS Wind speed Used sensor Ultrasounds Measuring range 0…50 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: Measuring Principle Of Wind Speed And Direction
3 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 determining not only the intensity but also the wind direc- tion. -
Page 6: Installation
4 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 arrow on the housing of the instrument to the North (see par. -
Page 7: Alignment Of The Instrument
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. In case of mobile installations (for example on a boat), take into account that the instrument measures the relative (apparent) wind speed with respect to the instrument. -
Page 8: Lectrical Onnections
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 and the corresponding wires of the optional CP52.x cable: Reference Visible side male... -
Page 9: Rs232 Serial Connection
4.2.1 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 10: Analog Outputs Connection (Hd53Ls.aand Hd53Ls.v
load does not exceed 32 unit loads. The load of an HD52.3D… anemometer is equal to ¼ of unit load. If the total load is greater than 32 unit loads, divide the network into segments and add a signal repeater between a segment and the successive one. Line termination should be applied at both ends of each segment. -
Page 11: Onnection Of Rs52 Cable
4.2.4 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 HD52.3D-S software package should be in-... -
Page 12: Configuration
5 CONFIGURATION Configuration mode allows to read the instrument general info (firmware version, calibration date, serial number), to read and set the instrument operation parameters. To configure the instrument, a RS232 serial connection to a PC should be performed (see par- agraph 4.2.1). - Page 13 General parameters: 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 Default : m/s (n=1) RGUV Reads the wind speed measuring unit set in the in- strument CWCnnnn &|...
- Page 14 2 : W IND DIRECTION EXTENDED CHARACTERISTIC With 0÷359° wind direction measuring range, the analog output continues to oscillate between maximum and minimum scale if the direction continues to slightly fluctuate around 0°: This effect can be reduced through the extended ("wrap-around") characteristic of wind direc- tion.
- Page 15 Analog outputs (HD53LS.A and HD53LS.V…): Command Reply Description CAFxnn &| Sets offset and direction of the analog output x (x=1 or 2) to: Standard if nn=00 [ex. 4…20 mA , 0...1 V , 0...5 V , 0...10 V] Without offset if nn=01 [ex.
- Page 16 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. For example, if the speed full scale value is set to 50 m/s, the speed range associated to the analog outputs is -50…+50 m/s.
- Page 17 Parameters for MODBUS-RTU mode (only HD53LS.S): Command Reply Description CU5Annn &| Sets MODBUS address to nnn The address should range within 1 and 247 Default : 1 RU5A & nnn| Reads the MODBUS address setting CU5Bn &| Sets the Baud Rate for MODBUS mode to: ...
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Page 18: Modbus-Rtu Mode (Only Hd53Ls.s)
6 MODBUS-RTU MODE (ONLY HD53LS.S) In MODBUS-RTU mode, the instrument sends the acquired measurements only if specifically requested by the PC, PLC or data logger. Communication parameters should be set in the PC or data logger as follows: • Baud rate: same as the setting in the instrument (default =19200) •... -
Page 19: Instrument Storage
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 20: Ordering Codes
ORDERING CODES HD53LS Output = 4…20 mA V = 0…10 V V1 = 0…1 V V5 = 0…5 V S = RS485 Modbus-RTU Bird spike Blank = without bird spike K = with bird spike CP52… Connecting cable with 19-pole M23 female free connector on one end, open wires on the other. - Page 21 OTES HD53LS V1.4...
- Page 22 OTES HD53LS V1.4...
- Page 24 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 | sales@deltaohm.com WARRANTY Delta OHM is required to respond to the "factory warranty" only in those cases provided by Legislative Decree 6 September 2005 - n.
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