Tekbox TBSHTP01 Manual Download Page 1

V1.1 

Flyer TBSHTP01 

      

 

Air Humidity, Temperature and Barometric Pressure Sensor Manual 

 
 

 

 

© 2012 Tekbox Digital Solutions 

 

50/11 Truong Son, F2 | Q. Tan Binh | Ho Chi Minh City | Tel +84 (83)5471340 | E-mail office@tekbox.net| www.tekbox.net 

 

The TBSHTP01 is an air humidity and temperature sensor with SDI-12 interface. The sensor uses 
a  single  chip  sensor  element  which  measures  both  temperature  and  air  humidity.  An  additional 
MEMS chip measures barometric pressure.  
Each sensor chip is individually factory-calibrated. 
The  RHT  sensor  chip  is  protected  with  a  PBT  filter  cap  carrying  a  PTFE  membrane  with  1.5µm 
pore size. 
The TBSHTP01 Board is conformally coated. An fine grid nylon mesh provides additional dust and 
insect protection 
The sensor including bend protection has a length of 115mm and a diameter of 12mm.   
  
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Features 

 

Air humidity, temperature and barometric 
pressure sensor 

 

SDI-12 Interface 

 

Temperature resolution: 0.01°C 

 

Temperature accuracy tolerance: 
+5°C to + 60°C: typ. ±0.2°C, max. ±0.4°C 
-40°C to +5°C: max. ±1°C 
 +60°C to +85°C: max. ±0.75°C 

 

Air humidity resolution: 0.04% RH 

 

Air humidity accuracy tolerance: 
10% to 90%: typ. ±1.8%RH, max. ±2%RH 
0% to 10%: typ. ±3%RH, max. ±4%RH 
90% to 100%: typ. ±3%RH, max. ±4%RH 

 

Barometric pressure range: 300-1100hPa 
(+9000 …-500m above sea level) 

 

Barometric pressure resolution: 0,02hPa 

 

Barometric pressure accuracy: ±1hPa 

 

 

SDI-12 Standard V1.3 

 

Plug and Play 

 

6 - 16V supply voltage 

 

Housing: 115 mm, Ø 12 mm  

 

Operating Temperature Range: 

 - 

40°C … + 85°C 

 

Excellent price-performance ratio  

 

Target Applications 

 SDI-12 Sensor Networks 

TBSHTP01 air humidity, air temperature and barometric pressure sensor 

 

Summary of Contents for TBSHTP01

Page 1: ...nal dust and insect protection The sensor including bend protection has a length of 115mm and a diameter of 12mm Features Air humidity temperature and barometric pressure sensor SDI 12 Interface Temperature resolution 0 01 C Temperature accuracy tolerance 5 C to 60 C typ 0 2 C max 0 4 C 40 C to 5 C max 1 C 60 C to 85 C max 0 75 C Air humidity resolution 0 04 RH Air humidity accuracy tolerance 10 t...

Page 2: ...NT 9 3 6 COMMANDS QUICK REFERENCE 9 3 7 MEASUREMENT EXAMPLES 9 3 8 SUPPORTED SDI 12 COMMANDS 12 3 9 SUPPORTED EXTENDED COMMANDS 13 4 APPLICATION EXAMPLE 14 4 1 SETTING UP TBSHTP01 TOGETHER WITH TBS03 14 4 1 1 Requirements 14 4 1 2 Driver 14 4 2 HARDWARE 14 4 2 1 Setting up the HyperTerminal application 15 4 3 OPERATION 15 4 3 1 SDI 12 USB converter transfer mode 15 4 3 2 Auto measurement mode 17 5...

Page 3: ...01 sensors 6 Figure 2 TBSHTP01 sensor s connected to Radio Telemetry Unit or Data Recorder 6 Figure 3 Setup 14 Figure 4 TBS03 Transfer mode initialization using Windows Hyper Terminal 15 Figure 5 TBSHTP01 sensor response to ID command 0I 15 Figure 6 TBSHTP01 response to Start Measurement command 0M 16 Figure 7 TBSHTP01 response to Send Data command 0D 16 Figure 8 TBSHTP01 response to commands 0M1 ...

Page 4: ...calibration is required 1 3 Placement Don t expose the sensor to direct sun or precipitation Install it in a location with permanent shadow and protection from precipitation inside a radiation shield or in an instrument shelter 1 4 Installation The TBSHTP01 is compatible with any data logger or remote telemetry unit with SDI 12 interface Refer to the data logger or RTU manual and to chapter 2 of t...

Page 5: ...I 12 Support Group Technical Committee 165 East 500 South River Heights Utah 435 752 4200 435 752 1691 FAX http www sdi 12 org The latest standard is version V1 3 which dates from July 18 th 2005 The standard is available on the website of the SDI 12 Support Group More information on SDI 12 is presented in chapter 3 ...

Page 6: ...sure Sensor Manual 6 2 Application Examples Figure 1 TBSHTP01 sensors connected to TBS03 SDI 12 to USB converter setup for controlling testing sensors and for PC based data recording Figure 2 TBSHTP01 sensor s connected to Radio Telemetry Unit or Data Recorder ...

Page 7: ...DI 12 sensor network every sensor needs to be configured with a unique address This can be done using the Change Address Command A sensor can typically measure one or more parameters Sensor manufacturers usually specify Extended Commands to configure or calibrate sensors These commands are specified by the manufacturer but they follow the command structure specified by SDI 12 A typical recorder se...

Page 8: ... up to 40 or up to 80 characters depending on the type of command Out of 40 or 80 characters the values part of the response string may contain up to 35 or 75 characters 3 3 Sensor Identification The air humidity temperature sensor interface will respond with a string of the following format when sending the Send Identification command aI allccccccccmmmmmmvvvxxxxxxxxxxxx CR LF Example 013TEKBOXVN_...

Page 9: ...nt followed by m digits The m maximum is one 1 n m return readings 3 6 Commands Quick Reference Measurement commands aM aMC aC aCC measure relative humidity aM1 aMC1 aC1 aCC1 measure relative humidity temperature C or F aM2 aMC2 aC2 aCC2 measure temperature C or F aM3 aMC3 aC3 aCC3 approximate calculation of dew point frost point C or F aM4 aMC4 aC4 aCC4 measure relative Humidity temperature dew p...

Page 10: ...29 23 aM3 aC3 Measure Dew Point Command Response Comment aM3 a0011 CR LF aD0 a dd dd CR LF The sign will change to for negative temperatures The approximate calculations of dew point frost point and absolute humidity are based on the measured values of air temperature and relative humidity and on the Magnus formula RH relative humidity T Temperature C TK Temperature in Kelvin K TD dew point temper...

Page 11: ...d Dew Point C Command Response Comment aM4 a0013 CR LF aD0 a hh hh tt tt dd dd CR LF The sign will change to for negative temperatures Example 0M4 00013 0D0 0 70 44 29 38 23 43 aM5 aC5 approximate calculation of absolute humidity g m3 Command Response Comment aM5 a0011 CR LF aD0 a www ww CR LF Example 0M5 00011 0D0 0 20 45 aM6 aC6 estimate cloud base m estimation cannot replace a ceilometer measur...

Page 12: ...to for negative value Example 0M8 00012 0D0 0 100813 64 42 66 3 8 Supported SDI 12 Commands Following commands are supported by TBSHTP01 Command Description Response a Acknowledge Active a CR LF aI Send Identification allccccccccmmmmmmvvvxxxxxxxxxxxx CR LF Identification information aAb Change Address b CR LF Changing the probe sensor address Address Query a CR LF aM Start Measurement atttn CR LF ...

Page 13: ...rrent Measurement and Request CRC a0000 CR LF supported aCCn Additional Concurrent Measurement and Request CRC a0000 CR LF supported aV Start Verification a0000 CR LF Not supported aRn Continuous Measurement a CR LF Not supported aRCn Continuous Measurement and Request CRC a CRC CR LF Not supported Table 1 Standard SDI 12 commands 3 9 Supported Extended Commands Command Description Response aXC te...

Page 14: ...to the PC when starting the CP2102 driver installation process 1 Start the driver installation executable 2 Follow the installation instructions step by step until the driver installation process is finished 3 The system may need to restart 4 Upon restart after successful driver installation and not before connect the TBS03 to the USB interface of the PC 5 Wait until you get the notification that ...

Page 15: ...e receives an initialization string for another mode or the device gets disconnected At the start up time Transfer Mode is the default mode Transfer Mode initialisation In Windows hyper terminal enter run sdi recorder and press the enter key or CR LF The TBS03 will respond with ACK CR LF Figure 4 TBS03 Transfer mode initialization using Windows Hyper Terminal The TBS03 is now in transfer mode and ...

Page 16: ...e measured air humidity level of 71 89 Figure 7 TBSHTP01 response to Send Data command 0D TBS03 Entering 0M1 CR LF will respond with TBSHTP01 response 00012 CR LF which means that the sensor will be able to deliver 2 values after an acquisition time of 1 second TBS03 Entering 0D0 CR LF will respond with Sensor response 0 71 73 30 04 CR LF where 71 73 is the measured air humidity level of 71 73 and...

Page 17: ... different SDI 12 measurement commands in an auto measurement string is 9 Auto measurement mode is stopped by sending stop CR LF Syntax run auto measurement command 1 timer value 1 measurement command n timer value n Example of controlling a TBSHTP01 in auto measurement mode TBS03 Entering run auto 0M4 10000 CR LF will respond with periodicially measured temperature humidity and dew point frost po...

Page 18: ...presentation of CR LF may be different for different programs Windows Hyper Terminal requires activatation of Send line ends with line feed in ASCII setup and thereafter pressing the ENTER key results in CR LF Many Hyper Terminal programs require n at the end of each SDI 12 string e g 0M n or run sdi recorder n Terminal v1 9b 20080315β by Br y requires adding 0D 0A for CR LF This tool offers user ...

Page 19: ...al 19 When manually entering commands in Terminal v1 9b tick the CR CR LF and CR box Figure 10 Example set up of Terminal v1 9b The above mentioned Hyper Terminal Programes are just examples to highlight that using such tools requires to take care of their way to handle CR LF ...

Page 20: ...0 100 RH RHres Relative humidity resolution 0 04 RH RHtol Relative humidity accuracy tolerance 1 8 see fig 13 RH RHh Relative humidity hysteresis 1 RH RHrep Relative humidity repeatability 0 1 RH RHdrift Relative humidity long term drift 0 5 RH year Trange Temperature measurement range 40 85 C Tres Temperature resolution 0 01 C Ttol Temperature accuracy tolerance 0 2 see fig 14 C Tres Temperature ...

Page 21: ...e pressure accuracy 300 1100 hPa 0 65 C 4 1 1 2 hPa 300 1100 hPa 20 0 C 6 1 1 4 hPa RMS noise 0 03 0 25 hPa m Table 4 Technical Specifications RHT sensor 7 Environmental Specifications Symbol Parameter Conditions Min Max Unit TA Operating Ambient Temperature Range 40 85 C TSTG Storage Temperature Range 50 90 C humidity level 0 100 Table 5 Environmental Specifications 8 Cable Connection Cable Colou...

Page 22: ...metric Pressure sensor SDI 12 Interface 4 wire cable SDI 12 Power SDI 12 Data GND Shield cable length 3m Please mention in your order if you require a different cable length Table 7 Ordering Information 10 History Version Date Author Changes V1 0 16 05 2013 Mayerhofer Creation of the document V1 1 02 10 2013 Mayerhofer Update of ordering information Table 8 History ...

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