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- Page 1 Instruction for Use 021578/07/11 Baro Transmitter 3.1157.10.xxx ADOLF THIES GmbH & Co. KG Hauptstraße 76 37083 Göttingen Germany Box 3536 + 3541 37025 Göttingen Phone ++551 79001-0 Fax ++551 79001-65 www.thiesclima.com info@thiesclima.com...
- Page 2 Safety Instructions, Environment, Documentation Operating Instructions • © Copyright Adolf Thies GmbH & Co KG, Göttingen / Germany • Although this document has been drawn up with due care, Adolf Thies GmbH & Co KG can accept no liability whatsoever for any technical and typographical errors or omissions in this document that might remain. •...
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Page 3: Table Of Contents
Contents Models available ........................4 Application / Construction / Mode of operation ................5 Mechanical Mounting ......................... 7 Electrical Mounting........................8 Operating Mode ......................... 8 Settings ............................9 Analysis............................ 10 Serial Communication......................10 Data Telegram........................11 General Construction on Sending a Command..............13 List of Commands ...................... -
Page 4: Models Available
1 Models available Description Order-No. Electrical Output Meas. Range Operating voltage Baro 3.1157.10.000 Digital: 1 x RS485 300...1100 hPa 5…24 V DC Transmitter 1 x 300...1100 Hz Analogue: 1 x 0...5 V scalable: 8...24 V DC set: 300...1100 hPa 800...1060 hPa Baro 3.1157.10.040 Digital: 1 x RS485... -
Page 5: Application / Construction / Mode Of Operation
2 Application / Construction / Mode of operation The baro transmitter measures the „ABSOLUTE AIR PRESSURE“ of at the location or calculates the „REDUCED AIR PRESSURE“ with respectively reduced altitude. • Absolute air pressure: air pressure measured in altitude of barometer. Other description of the „absolute air pressure“: “QFE“, used by ICAO (International Civil Aviation Organization) •... - Page 6 In order to compare air pressure values, which have been measured at different sites, reasonably with each others, they have to be converted to a mutual reference height. The calculation is referring to sea level (QNH) acc. to the international altitude formula (DIN ISO2533).
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Page 7: Mechanical Mounting
3 Mechanical Mounting The baro transmitter can be operated in air (non-condensing) and in non-conductive gases. Attention: On application in liquids or aggressive gases the instrument can be destructed! The special screwed cable gland with linear smoothing function for air pressure should indicate downward. -
Page 8: Electrical Mounting
4 Electrical Mounting 8-pole terminal strip Description Function SHUTDOWN Shutdown of baro transmitter SUPPLY 5-24 VDC supply (+) GND* Supply, ground (-) FREQUENCY Frequency output AGND* Analogue signal, ground (-) Analogue output RS485 (Data+) RS485 (Data-) Table 1: Pin Assignment of Terminal Strip * The pins AGND and GND are connected to the same electrical potential The different outputs are usable at the same time. -
Page 9: Settings
6 Settings The baro transmitter can be configured by means of jumpers and soldered bridges. The following figures show the position of the bridges and the coding table. µC 3 1 2 Figure 1: Position Jumper Jumper / Soldered bridge Function (Pin1/2) SHUTDOWN Off *... -
Page 10: Analysis
7 Analysis Mathematical correlation between output variable and air pressure: Output Formula Voltage output: ⋅ 0...5V @ 800...1060hPa Voltage output: ⋅ 0...10V @ 800...1060hPa Current output: ⋅ 0...20mA @ 800...1060hPa Current output: 4...20mA @ 800...1060hPa ⋅ − Voltage output: ⋅ 0...10V @ 600...1060hPa Voltage output: ⋅... -
Page 11: Data Telegram
8.1 Data Telegram The data output is carried out on query of the command TR. The detailed construction is given in the following: Data telegram: <(STX)><pressure>;<temperature>; <status>*<check <Station height>;<QNH> sum><CR><LF><ETX> Character No. Function STX (HEX 02) Air pressure in hPa Air pressure in hPa Air pressure in hPa Air pressure in hPa... - Page 12 Control character: CR – Carriage Return (13 ; 0x0D) LF – Line Feed (10 ; 0x0A) STX – Start of Text (2 ; 0x02) ETX – End of Text (3 ; 0x03) Separation character: Separation character between the individual measuring values in the string is the semicolon ’;’. The check sum separation character is the multiplication sign ’*’.
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Page 13: General Construction On Sending A Command
8.2 General Construction on Sending a Command The baro transmitter has a command interpreter that can change the behaviour of the instrument . That way, for ex. the baud rate, the instrument ID can be modified: Generally, a command is constructed as follows: <id><command><CR>... -
Page 14: List Of Commands
8.3 List of Commands Command Description <id>AY<para> Minimum value of the analogue output Command AY <id>AZ<para> Maximum value of the analogue output Command AZ <id>BR<para> Selecting the baud rate Command BR <id>DP<para> Time for mean value calculation Command DP <id>HT<para> Mode of heating control Command HT <id>ID<para>... -
Page 15: Command Br
8.4.3 Command BR <id>BR<parameter><CR> Setting the baud rate <id>BR<CR> Query of the current BR-parameter Echo of command !xxBRxxxxx<CR> Access: read / write Description: The required baud rate is set by the BR-command and the parameter 0000x. Parameter description: Parameter Description 00002 1200 baud (8n1) 00003... -
Page 16: Command Ht
8.4.5 Command HT <id>HT<parameter><CR> Mode of the heating control <id>HT<CR> Query of the current HT-parameter Echo of command !xxHTxxxxx<CR> Access: read / write Description: The command „HT“ is setting the mode of the heating control. Adjusting of sensor temperature to 50°C. Parameter description: 0: heating off 1: heating on... -
Page 17: Command Pp
8.4.8 Command PP <id>PP<CR> Query of the current calibration parameters Echo of command Access: read Description: The calibration parameters of the pressure sensor are output by the command „PP“. Response telegram: < AC1=10459; // Parameter AC1 < AC2=64447; // Parameter AC2 <... -
Page 18: Command Sh
7: only RS485 Receiver active (start-up via receipt of a sign) 8: all deactivated (start-up only via power-on-reset) PS - mode Power consumption @ 5V Power consumption @ 12V Power consumption @ 24V (in mA) (in mA) (in mA) Shutdown=0 1µA 1µA 1µA... -
Page 19: Command Tr
8.4.11 Command TR <id>TR<00001><CR> Query of measuring value Echo of command Access: read Description: The command triggers a single transmission of the current measuring value. Response telegram: <(STX)><pressure>;<temperature>;<station height>;<QNH><status>*<check sum><CR><LF><ETX> Value range: Initial value: Maintenance With proper mounting the instrument operates maintenance-free. The measuring results are effective at the moment of factory-calibration. -
Page 20: Technical Data
10 Technical Data Pressure sensor Type Piezo resistive Barometr. Air pressure Measuring range 300...1100 hPa Resolution 0.01 hPa Accuracy with sensor heating ± 0.25 hPa @ -40…+65°C Accuracy w/o sensor heating Typical ± 1 hPa @ -20...+65°C Long-term stability ± 0.1 hPa / year Pressure sensor Control temperature 50°C ±1°K... -
Page 21: Dimensional Drawing [In Mm]
at @ 12 V DC 2.3mA (only RS485 active) 3.1mA (only analogue output active) 2.2mA (only frequency output active) 3.6mA (only analogue- and frequency- output active) 3.2mA (only RS485 and analogue-output active) 2.6mA (only RS485 and frequency output active) 0.6mA (only RS485 Receiver active) 1µA (in shutdown mode) External Control Shutdown mode... -
Page 22: Ec-Declaration Of Conformity
12 EC-Declaration of Conformity Document-No.: 000113 Month: 07 Year: 11 Manufacturer: A D O L F T H I E S G m b H & C o. K G Hauptstr. 76 D-37083 Göttingen Tel.: (0551) 79001-0 Fax: (0551) 79001-65 email: Info@ThiesClima.com Description of Product: Digital Baro Transmitter Article No. - Page 23 23 - 24 021578/07/11...
- Page 24 ADOLF THIES GmbH & Co. KG Hauptstraße 76 37083 Göttingen Germany P.O. Box 3536 + 3541 37025 Göttingen Phone ++551 79001-0 Fax ++551 79001-65 www.thiesclima.com info@thiesclima.com - Alterations reserved- 24 - 24 021578/07/11...
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