Page 1: ...Operating manual Ultrasonic anemometers HD52 3D series www deltaohm com English Keep for future reference Companies Brands of GHM...
Page 2: ...1 RS232 SERIAL CONNECTION 15 5 2 2 RS485 SERIAL CONNECTION 15 5 2 3 RS422 SERIAL CONNECTION 16 5 2 4 SDI 12 SERIAL CONNECTION 17 5 2 5 ANALOG OUTPUTS CONNECTION 17 5 2 6 CONNECTION OF RS52 CABLE 18 5...
Page 3: ...are equipped with a magnetic compass Wind speed and direction are determined by measuring the transit time of ultrasonic pulses between two pairs of ultrasonic transducers RS232 RS485 RS422 and SDI 1...
Page 4: ...ries TAB 1 A Available versions Model Wind speed Wind direction Relative humidity Temperature Solar radiation Rainfall Barometric pressure HD52 3D HD52 3D4 HD52 3DP HD52 3DP4 HD52 3D17 HD52 3D147 HD52...
Page 5: ...on 17 Sensor Capacitive Measuring range 0 100 RH Resolution 0 1 Accuracy T 15 35 C 1 5 RH 0 90 RH 2 RH remaining range Accuracy T 40 70 C 1 5 1 5 of measurement RH Barometric Pressure needs option 4 S...
Page 6: ...interval Configurable from 1 s to 10 min Electrical connection 19 pole M23 male connector Operating temperature 40 70 C Minimum temperature for the rainfall sensor 1 C Protection degree IP 66 Survival...
Page 7: ...HD52 3D 7 V2 2 HD52 3D HD52 3D4 HD52 3DP HD52 3DP4 132 547 40 ext 36 int 50 150 HD52 3DT147 Mast Mast Mast...
Page 8: ...rs for the measurement of wind speed and direction 3 Protective shield from solar radiation for relative humidity and temperature sensors 4 Fixing clamp to 40 mm mast Note in the models measuring baro...
Page 9: ...sion with rain gauge 1 Rain gauge 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 c...
Page 10: ...time If wind speed is zero tA and tR values are the same In the presence of wind one of the two time values is greater than the other and the comparison between the two time values allows to determin...
Page 11: ...p port mast by tightening the cable tie at the bottom of the instrument The support mast having 40 mm maximum outer diameter and 36 mm minimum inner diame ter should be positioned on a stable surface...
Page 12: ...der the movement velocity of the instrument All instrument sensors are factory calibrated and do not require additional interventions of the user Unless otherwise requested with factory settings the i...
Page 13: ...aluating the wind direction one should take into account that the geographic North differs from the magnetic North indicated by the compass The difference named magnetic declination depends on the are...
Page 14: ...r power supply negative 7 7 Violet HEAT Heater power supply positive 10 30 Vdc 8 8 Grey GND Serial ground 9 9 White TX Serial transmission output negative DATA RS485 output 10 Not used 11 Not used 12...
Page 15: ...int network Instruments are connected in sequence through a twisted pair shielded cable for signals and a third wire for ground Line terminations should be placed at the two ends of the network The ca...
Page 16: ...nnecting the instrument to the network configure address and Baud Rate see chap ter 6 CONFIGURATION 5 2 3 RS422 SERIAL CONNECTION RS422 standard is used for point to point connection on long distances...
Page 17: ...onnect the outputs according to one of the two schemes below depending on the output type current standard or voltage on request available in the instrument OUT 1 and OUT 2 are associated to wind spee...
Page 18: ...ed directly from the USB port of the PC 5 2 7 CONNECTION OF HEATING SYSTEM Models with heat option R option have an integrated device that heats sonic transducers in order to prevent ice forming and e...
Page 19: ...erial commands described in the following tables To configure and make the in strument operational the following should be performed Send command for operation mode selection see table Operation Mode...
Page 20: ...unit mbar if n 1 Note 1mbar 1hPa mmHg if n 2 inchHg if n 3 mmH2O if n 4 inchH2O if n 5 atm if n 6 Default mbar n 1 RGUP n Reads the pressure measuring unit set in the instrument CGURn Sets rainfall m...
Page 21: ...if n 4 38400 if n 5 57600 if n 6 Default 57600 n 6 RU2B n Reads Baud Rate setting for proprietary RS232 mode CU1Dccccccccccc Sets measurements order in the string sent in proprietary RS232 and RS485 m...
Page 22: ...s is requested E character three numbers with the following meaning will appear in the data string sent by the instrument 1 First number error code identifying the transducers and the type of error Th...
Page 23: ...arity and stop bits for NMEA mode to 8N1 if n 0 No parity 1 stop bit 8N2 if n 1 No parity 2 stop bits 8E1 if n 2 Even parity 1 stop bit 8E2 if n 3 Even parity 2 stop bits 8O1 if n 4 Odd parity 1 stop...
Page 24: ...nnect to PC or datalogger 1 instrument only option useful to do tests without RS232 RS485 conversion RU5I n Reads interface setting for MODBUS mode CU5Mn Sets parity and stop bits for MODBUS mode to 8...
Page 25: ...ion of aver age speed and average direction to nnn value Value should range within 1 and 600 s If the value is greater than 10 s it must be an integer multiple of 10 note the value can be greater than...
Page 26: ...sult inaccurate The in strument allows setting the threshold value of speed below which the direction value is frozen on the last acquired value NOTE 4 WIND DIRECTION EXTENDED CHARACTERISTIC With 0 35...
Page 27: ...of the analog output and the di rection of the wind in the two modes Wind direction 4 20mA output 0 1V output 0 5V output 0 10V output standard extended standard extended standard extended standard e...
Page 28: ...2 Mean wind direction If n 1 see Note 5 Output 1 Instant wind speed component along V axis Output 2 Instant wind speed component along U axis If n 2 Tunnel mode see Note 6 Output 1 Instant wind speed...
Page 29: ...y the magnetic compass but the measurement is referred to the direction indicated by the arrow on the instrument case The output 2 is set to full scale value if the wind blows in the direction of the...
Page 30: ...ing in the instrument Data bits 8 Parity None Stop bits 2 The instrument sends measurements in the following format M1 M2 Mn CR LF with M1 M2 Mn values of the first second nth measurement CR ASCII cha...
Page 31: ...ding measurements M1 M2 Mn values of the first second nth measurement SP space CS checksum hex value of the 8 bit checksum of all the preceding characters CR ASCII character Carriage Return Fields M1...
Page 32: ...stablishes that data are sent in the following format Prefix Data hh CR LF with Prefix field consisting in 5 alphanumeric characters the first two indicate the type of transmitting device the other th...
Page 33: ...tive humidity 64 2 o Air temperature 26 8 C o Solar radiation 846 W m2 Based on the above values the following can be calculated o Absolute humidity 16 4 g m3 o Dew Point 19 5 C The strings sent by th...
Page 34: ...rection in degrees x10 unsigned 16 bits 1 00 3 Sonic temperature measured by the first transducers pair x10 16 bits 1 00 1 4 Sonic temperature measured by the second transducers pair x10 16 bits 1 00...
Page 35: ...nch unsigned 16 bits 2 22 3 28 Rainfall rate x10 if the unit of measure ment is mm h x100 if the unit of meas urement is inch h unsigned 16 bits 2 22 29 Rainfall unit of measurement 0 mm 1 inch unsign...
Page 36: ...urement error Bit 4 Barometric pressure measurement error Bit 5 Solar radiation measurement error Bit 6 Not assigned Bit 7 Not assigned There is an error condition if the corresponding bit value is 1...
Page 37: ...3 version of the protocol The table below shows the available SDI 12 commands To comply with the SDI 12 standard the instrument address is indicated in the table with the letter a The instrument comes...
Page 38: ...tly requested command aD0 without send ing this command before Request to perform the measurement aD0 aD1 aD2 aD3 aD4 aD5 a WS WD T CR LF a RH AH DP CR LF a P R C CR LF a WSa WDa CR LF a WGS WGD CR LF...
Page 39: ...isting in a series of 9 is sent The Wind Gust measurement is available starting from firmware version 2 20 The Wind Gust measurement is determined by continuously calculating the wind speed averages i...
Page 40: ...the specific measures described in this manual are followed The instrument proper operation and operating safety can be ensured only in the climatic con ditions specified in this manual Do not use the...
Page 41: ...he other Ordering scheme for models without rain gauge With rain gauge the HD52 3DT147 model is available measurement of wind speed and direction rainfall relative humidity barometric pressure and tem...
Page 42: ...the other Length 30 m CP52 50 12 pole connecting cable with 19 pole M23 female free connector on one end open wires on the other Length 50 m CP52 75 12 pole connecting cable with 19 pole M23 female f...
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Page 44: ...zed third parties is excluded from the guarantee The instrument shall be returned FREE OF SHIPMENT CHARGES to your dealer The jurisdiction of Padua applies in any dispute The electrical and electronic...
Page 45: ...e 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 We cannot completely exclude...
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 V2 2 11 11 2020...
