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THIES 4.3811.00.000, Operating Instructions Manual

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4.3811.00.000_US-Anemometer-DSP_eng.doc 

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021511/10/06

 

Contents 

1

 

Application ................................................................................................................................. 4

 

2

 

Mode of Operation ..................................................................................................................... 4

 

2.1

 

Measuring principle: Wind velocity and direction ................................................................ 5

 

2.2

 

Measuring principle: Acoustic virtual temperature............................................................... 6

 

3

 

Preparation for Operation / Installation ...................................................................................... 6

 

3.1

 

Selection of installation site ................................................................................................. 7

 

3.2

 

Installation of anemometer .................................................................................................. 7

 

3.3

 

Alignment to north ............................................................................................................... 7

 

3.4

 

Cables, cable preparation, connector installation................................................................ 7

 

3.5

 

Connector pin assignment................................................................................................... 9

 

4

 

Maintenance .............................................................................................................................. 9

 

5

 

Calibration................................................................................................................................ 10

 

6

 

Warranty .................................................................................................................................. 10

 

7

 

Functional Description ............................................................................................................. 11

 

7.1

 

Serial communication ........................................................................................................ 11

 

7.1.1

 

General telegram structure ......................................................................................... 12

 

7.1.2

 

Return values of ULTRASONIC.................................................................................. 13

 

7.1.3

 

Access mode .............................................................................................................. 13

 

7.1.4

 

Device ID .................................................................................................................... 14

 

7.1.5

 

Bus mode.................................................................................................................... 14

 

7.2

 

Data acquisition................................................................................................................. 14

 

7.2.1

 

Averaging.................................................................................................................... 14

 

7.3

 

Serial data output .............................................................................................................. 15

 

7.3.1

 

Data enquiry ............................................................................................................... 15

 

7.3.2

 

Fixed telegram formats ............................................................................................... 15

 

00005 ............................................................................................................................................. 15

 

7.4

 

Generation of check sum .................................................................................................. 16

 

7.5

 

Status information ............................................................................................................. 16

 

7.5.1

 

Definition of status byte version 1............................................................................... 16

 

7.5.2

 

Structure of status byte version 1 ............................................................................... 16

 

7.5.3

 

Definition of temperature difference in status byte ..................................................... 17

 

7.5.4

 

Definition of averaging memory used ......................................................................... 17

 

7.6

 

Behaviour in fault conditions ............................................................................................. 17

 

7.7

 

Heating control .................................................................................................................. 17

 

7.8

 

Output of all system parameters ....................................................................................... 18

 

7.9

 

Enquiry about software version ......................................................................................... 18

 

7.10

 

Forcing a restart ................................................................................................................ 18

 

7.11

 

Bootloader ......................................................................................................................... 18

 

7.12

 

Online Help........................................................................................................................ 18

 

8

 

Configuration of Ultrasonic Anemometer by Customer............................................................ 19

 

9

 

Command List, Short ............................................................................................................... 20

 

10

 

Predefined Data Telegram.................................................................................................... 22

 

Summary of Contents for 4.3811.00.000

Page 1: ...sonic Anemometer 2D 4 3811 00 000 Software version V2 00 or higher Status 10 2006 Operating Instructions 021511 10 06 ADOLF THIES GmbH Co KG Hauptstra e 76 37083 G ttingen Germany Box 3536 3541 37025...

Page 2: ...turn values of ULTRASONIC 13 7 1 3 Access mode 13 7 1 4 Device ID 14 7 1 5 Bus mode 14 7 2 Data acquisition 14 7 2 1 Averaging 14 7 3 Serial data output 15 7 3 1 Data enquiry 15 7 3 2 Fixed telegram f...

Page 3: ...23 12 Dimension Drawing 25 13 Accessories available as optional features 25 Fig Fig 1 Connector assembly 8 Table Table 1 Return values with incorrect interpretation of command 13 Table 2 Access key f...

Page 4: ...by means of metal encapsulated ultrasonic transformers These Operating Instructions relate to the device version 4 3811 00 000 They describe possible applications and settings The Ultrasonic Anemomete...

Page 5: ...different wind velocities and directions over a fixed measurement path As the speed of sound greatly depends on the temperature of the air the propagation time of the sound is measured on each of the...

Page 6: ...linear dependence on the absolute humidity level of the air The amount of water vapour in the air proportionately increases the speed of the sound as H2O molecules only have around half the mass of t...

Page 7: ...c anemometer is fitted on the tube or mast socket The arm of the sonic transformer marked red must be aligned to north This allows a bearing to be taken from an object located to the north e g a build...

Page 8: ...ulating tape between litz wire and shield Cable assembly 2 Position shield to rear on cable sheath if cable diameter permits 3 Solder litz wire to female insert position shield in cable clamp 4 Screw...

Page 9: ...l interface 4 Selection device ID Low active Bit 1 Pull up 1mA internal 5 TX RX Y RS 485 RS 422 Serial interface 6 GND Serial interface 7 Supply 20 28 VAC nom 24 VAC No load voltage 32 VAC 8 Supply 20...

Page 10: ...d velocity corresponds to a deviation in the virtual temperature of 1 K at 20 C With a 6 K temperature deviation there is thus a measuring error of approx 1 for the wind velocity Important Mechanical...

Page 11: ...an RS485 interface for serial communication It can be operated either in full or half duplex mode and at different baud rates A standard terminal program is used for communication with the ULTRASONIC...

Page 12: ...a 5 position value The parameter is always right justified i e it thus has to be padded from the left with zeros Example Telegram No 4 is to be interrogated The relevant command is 00TR00004 cr cr sta...

Page 13: ...ls interrogation mode user mode configuration mode Interrogation mode This mode includes commands which do not influence the parameters of the ULTRASONIC They include for example output of the system...

Page 14: ...pose With an update the program update must be performed for every ULTRASONIC 7 2 Data acquisition The main function of the ULTRASONIC firmware is data acquisition and preparation For data acquisition...

Page 15: ...am The time between the last character in the request telegram and the first character in the data telegram is 0 5ms The response to a data enquiry is delayed by 5ms in this device version 7 3 2 Fixed...

Page 16: ...ow nibble 4 bit are EXOR linked and output as an ASCII value 7 5 Status information 7 5 1 Definition of status byte version 1 The status byte contains information about the current system status The i...

Page 17: ...e In this case the error bits are set in the status values and a defined value possibly output at the analog outputs It is a basic rule that the measured values output are always valid and can be inte...

Page 18: ...prox 3sec 7 11 Bootloader Whenever the ULTRASONIC is restarted the device first starts a bootloader The function of the program is to start program upload For this a specific program containing the ne...

Page 19: ...It is possible for the customer to alter the factory setting of the Ultrasonic Anemometer 2D or to adapt it to new requirements Here it should be borne in mind that with a change in settings the orde...

Page 20: ...BH para5 Selects the Bavaria Hesse measuring instrument addresses id BR para5 Select baud rate Baud rate id BX para5 Select baud rate Baud rate extension id BY para5 Scaling of minimum value for anal...

Page 21: ...tware version id TC para5 TC Temperature correction Temperature correction id TE para5 Propagation time delay East sensor Sensor delay EAST sensor id TN para5 Propagation time delay North sensor Senso...

Page 22: ...onse character 2 i 0 9 Identifier 3 i 0 9 Identifier 4 v 0 9 Wind velocity 10 1 m s 5 v 0 9 Wind velocity 10 0 m s 6 v 0 9 Wind velocity 10 1 m s 7 d 0 9 Wind direction 10 2 degree 8 d 0 9 Wind direct...

Page 23: ...K Resolution 0 1 K in telegrams 14 1 to 14 6 Data output digital Interface RS 485 RS 422 Baud rate 1200 2400 4800 9600 19200 38400 57600 115200 230400 460800 921600 adjustable Output Instantaneous val...

Page 24: ...e Program update possible in bus mode Temperature range Operating temp 40 70 C Storage 50 80 C Operating voltage Supply electronics 12 28 V AC DC 10 approx 2 VA Supply heating 24 V AC DC 15 max 28V ty...

Page 25: ...e with coupling socket on transmitter side The other end of the cable is equipped with core identification rings PC Program Meteo Online 9 1700 98 000 For graphical display of measured values on a PC...

Page 26: ...uptstra e 76 37083 G ttingen Germany P O Box 3536 3541 37025 G ttingen Phone 551 79001 0 Fax 551 79001 65 www thiesclima com info thiesclima com Alterations reserved 4 3811 00 000_US Anemometer DSP_en...

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