Related Manuals for DeltaOHM HD51.3D4R
Summary of Contents for DeltaOHM HD51.3D4R
- Page 1 English Operating manual Ultrasonic anemometers HD51.3D4R HD51.3D4R-AL Companies / Brands of GHM www.deltaohm.com Keep for future reference.
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Page 2: Table Of Contents
ERIAL OMMANDS ASCII PROPRIETARY MODE ................25 NMEA MODE......................26 MODBUS-RTU MODE ................... 28 INSTRUMENT STORAGE ..................30 SAFETY INSTRUCTIONS..................30 ORDERING CODES ....................31 HD51.3D4R V1.2... -
Page 3: Introduction
The heater prevents the accumulation of snow and ice formation, allowing accurate measurements in all environmental conditions. HD51.3D4R-AL is equipped with an enhanced heater, for rapid defrosting, and an ano- dized aluminum alloy housing with anti-corrosion coating that makes it possible to use the instrument even in a particularly aggressive atmosphere (e.g., marine environment). -
Page 4: Technical Specifications
2 TECHNICAL SPECIFICATIONS HD51.3D4R HD51.3D4R-AL Wind speed Used sensor Ultrasounds Measuring range 0…85 m/s 0…80 m/s Resolution 0.01 m/s Accuracy ± 0.2 m/s or ± 2%, the greatest (0…60 m/s), ± 3% (> 60 m/s) Wind direction Used sensor Ultrasounds Measuring range 0…359.9°. -
Page 5: Description
Dimensions: 40 ext. 36 int. 3 DESCRIPTION 1. Ultrasonic sensors for the measurement of wind speed and direction. 2. Fixing clamp to Ø 40 mm mast. 3. Ø 40 mm mast. HD51.3D4R V1.2... -
Page 6: Measuring Principle Of Wind Speed And Direction
= Distance between the two transducers of the same pair = Sound speed = Component of wind speed along the measurement axis Measuring the two travel times allows determining the wind speed component: ⎛ ⎞ ⋅ − ⎜ ⎟ ⎝ ⎠ HD51.3D4R V1.2... -
Page 7: Installation
Any close objects (such as buildings, trees, pylons, etc.) should be at a distance equal to at least ten times their height. 10 x H In the presence of close objects, it is advisable to place the instrument at a height of 10 m. HD51.3D4R V1.2... -
Page 8: Alignment Of The Instrument
North. Take into account that the instrument measures the wind direction with respect to the reference arrow on the housing (the instrument is not equipped with a magnetic compass for the auto- matic compensation of the direction). HD51.3D4R V1.2... -
Page 9: Electrical Connections
Blue Analog ground (isolated from V –) Red/Blue OUT 2 Analog output 2 positive White/Green TX + Serial transmission (output) positive “DATA +” main RS485 output Not used Instrument power supply positive (12…30 Vdc) Grey/Red SHIELD Cable shield HD51.3D4R V1.2... -
Page 10: Rs232 Serial Connection
The RS485 standard requires that the total load does not exceed 32 unit loads. The load of an HD51.3D4R… anemometer is equal to ¼ of unit load. If the total load is greater than 32 unit loads, divide the network into segments and - 10 HD51.3D4R... -
Page 11: Rs422 Serial Connection
Typically, the maximum length is 1200 m. The data lines should be kept separated from any power lines in order to prevent interference with the transmitted signal. Before connecting the instrument to the network, configure address and Baud Rate (see chap- ter 6). - 11 HD51.3D4R V1.2... -
Page 12: Nalog Outputs Onnection
Reference of female connector (solder side) HEAT- HEAT- HEAT- HEAT+ HEAT+ HEAT+ Instrument power supply The heat circuit is switched on below +4 °C. After switching on, the heating is switched off when the temperature exceeds +10 °C. - 12 HD51.3D4R V1.2... -
Page 13: Auxiliary Rs485 Serial Output Connection
If the instrument is set up to work with an operating protocol, the protocol becomes active 10 seconds after power on (in the first 10 seconds the instrument waits for a possible command to enter configuration mode, as explained in chapter 6). The auxiliary RS485 serial output is always in configuration mode. - 13 HD51.3D4R V1.2... -
Page 14: Configuration
MODBUS-RTU if n=5 Default : Configuration (n=0) & n| Reads mode set in the instrument Note 1: after sending the CUMn command, the instrument remains in configuration mode. Power cycle the instrument to activate the set operating mode. - 14 HD51.3D4R V1.2... - Page 15 G ⇒ Wind Gust (intensity and direction) S ⇒ Sound speed T ⇒ Sonic Temperature E ⇒ Errors Default : 780TE (see Note 2) RU1D & ccccccccccc| Reads measurements order in the string sent in ASCII proprietary mode - 15 HD51.3D4R V1.2...
- Page 16 Example: if 21 0 2 appears in correspondence to the error condition in the data string sent by the instrument, it means that an error occurred in the transducer number 2, that the heating is turned off and that two measurements have been rejected due to the error occurrence. - 16 HD51.3D4R V1.2...
- Page 17 NMEA mode to nnn sec- onds The interval should range within 1 and 255 seconds Default : 1 second RU4R & nnn| Reads setting of transmission interval of string with measurements in NMEA mode - 17 HD51.3D4R V1.2...
- Page 18 MODBUS mode to: Immediate reception if n=0 (violates protocol) Waiting 3.5 characters if n=1 (respects protocol) Default : Waiting 3.5 characters (n=1) RU5W & n| Reads current setting of waiting time after transmission in MODBUS mode - 18 HD51.3D4R V1.2...
- Page 19 (in hundredths of m/s) CWaLnnn &| Sets time interval for the calculation of aver- age speed and average direction to nnn value Value should range within 1 and 600 s Default : 1 s - 19 HD51.3D4R V1.2...
- Page 20 Sets the measurement rate to n measure- ments/s Value should range within 1 and 4 Default : 4 n samples per second Reads the measurement rate set in the in- strument - 20 HD51.3D4R V1.2...
- Page 21 0 to 359.9°; if later the “physical” direction goes back to 0°, the analog output will always remain around 360°. Using the extended characteristic, the behavior of the above graph changes into the following: - 21 HD51.3D4R V1.2...
- Page 22 • the maximum value of the averages calculated in the previous point is detected over a time interval equal to that set with the CWgO command (by default 60 seconds); the maximum value detected is the measure of Wind Gust. - 22 HD51.3D4R V1.2...
- Page 23 Output 2 = Instant wind direction referred to the direction indicated by the arrow on the instrument case Default : n=0 & n| Reads the association of analog outputs - 23 HD51.3D4R V1.2...
- Page 24 The initial scale of output 1 is associated to the speed value opposite to that associated to the output full scale. Instrument information: Command Reply Description &VPnn.nn yyyy/mm/dd| Version and date of firmware &nnnnnnnn| Serial number of instrument &ccc…ccc| User code CGIccc…ccc &| Sets user code to ccc…ccc (max. 34 characters) - 24 HD51.3D4R V1.2...
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Page 25: Ascii Proprietary Mode
Supposing that the instrument measures the following values (the measuring unit is not con- sidered, being not output by the instrument): M1=28.30, M2=359.3, M3=998.3, the data string sent by the instrument takes the form: 28.30 359.3 998.3<CR><LF> - 25 HD51.3D4R V1.2... -
Page 26: Nmea Mode
Air temperature ⇒ not available, empty field Barometric pressure, bar Barometric pressure, inHg (mercury inches) The fields related to quantities not measured by the instrument are empty (multiple consecu- tive commas appear to indicate the missing fields). - 26 HD51.3D4R V1.2... - Page 27 Wind speed = 5.60 m/s (=10.88 knot) Wind direction with respect to magnetic North = 38.7° Barometric pressure = 1014.9 hPa (= 30.0 inHg) The string sent by the instrument is: $IIMDA,30.0,I,1.0149,B,,C,,C,,,,C,,T,38.7,M,10.88,N,5.60,M*34<CR><LF> For additional information regarding the protocol, visit the site "www.nmea.org". - 27 HD51.3D4R V1.2...
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Page 28: Modbus-Rtu Mode
Wind speed unit of measurement unsigned 16 bits 0 ⇒ m/s 3 ⇒ knot 1 ⇒ cm/s 4 ⇒ mph 2 ⇒ km/h Temperature unit of measurement unsigned 16 bits 0 ⇒ °C 1 ⇒ °F - 28 HD51.3D4R V1.2... - Page 29 Wind Gust direction in degrees (x10) unsigned 16 bits Note: for quantities with configurable measurement unit, the measurement value is expressed in the unit set in the instrument. For additional information regarding the protocol, visit the site "www.modbus.org". - 29 HD51.3D4R V1.2...
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Page 30: Instrument Storage
User obligations The instrument operator shall follow the directives and regulations below that refer to the treatment of dangerous materials: EEC directives on workplace safety National low regulations on workplace safety Accident prevention regulations - 30 HD51.3D4R V1.2... -
Page 31: Ordering Codes
Delta OHM website is included. CP51… cable on request. HD51.3D4R-AL 2-axis ultrasonic static anemometer. Measurement of wind speed and direc- tion, U-V Cartesian components of wind speed, Wind Gust and barometric pressure. Isolated RS232, RS485, and RS422 serial outputs. NMEA, MOD- BUS-RTU and ASCII proprietary communication protocols. - Page 32 OTES - 32 HD51.3D4R V1.2...
- Page 33 OTES - 33 HD51.3D4R V1.2...
- Page 34 OTES - 34 HD51.3D4R V1.2...
- Page 36 This guarantee must be sent together with the instrument to our service centre. IMPORTANT: Guarantee is valid only if coupon has been correctly filled in all details. HD51.3D4R HD51.3D4R-AL Instrument Code:...
- Page 37 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 38 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 V1.2 20/09/2018...