SENSIRION EK-H2 Manual

Evaluation kit for humidity & temperature sensors

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Evaluation Kit EK-H2
For Humidity & Temperature Sensors
Introduction
The evaluation kit EK-H2 provides an easy-to-use,
plug-and-play system – including hard and soft-
ware – for evaluating and demonstrating SHTxx
humidity and temperature sensors. All types of
SHTxx sensors can be applied by the system,
even SMD type sensors have been mounted to
PCBs with pins for easy evaluation. The only pre-
requisite for applying EK-H2 is a computer.
It must be emphasized that EK-H2 has been de-
veloped for demonstration and evaluation pur-
poses. It has not been certified for calibration or
measurement purposes. In extreme environments,
failures may occur that would happen to mere
sensors. For precise measurements please apply
the evaluation kit EK-H3 – please refer to the data-
sheet on www.sensirion.com/humidity.
SHTxx humidity sensors provided by Sensirion are
fully integrated relative humidity and temperature
sensors with calibrated digital output. The integra-
Figure 1: Evaluation Kit EK-H2 with contents
www.sensirion.com
Version 4.0
tion of sensor and readout circuitry on a single chip
leads to an excellent price to performance ratio
and high reliability. Additionally, the sensor system
combines relative humidity and temperature meas-
urement which allows for precise dew point deter-
mination. The linear output signal is fully calibrated
and allows sensor components to be exchanged
without additional calibration. Moreover, its digital
output provides simple access to the sensor signal.
For further information on the SHTxx humidity
sensors please refer to the datasheet available on
www.sensirion.com/humidity.
In addition to the SHTxx humidity sensors the
evaluation kit EK-H2 further contains filter caps
SF1, useful for mounting onto SHT1x sensors.
SF1 filter caps protect the sensor against dust and
other contaminants and may be mounted into a
wall of a device housing. For further information
and technical details on the filter cap SF1 please
refer to the respective datasheet.
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Sensirion
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Summary of Contents for SENSIRION EK-H2

  • Page 1 EK-H2 is a computer. without additional calibration. Moreover, its digital output provides simple access to the sensor signal. It must be emphasized that EK-H2 has been de- For further information on the SHTxx humidity veloped for demonstration and evaluation pur- sensors please refer to the datasheet available on poses.
  • Page 2: Getting Started

    Please note: All sensor components may be of version 3 or version 4 (V3 and V4) - V3 sensors were produced on 4” wafers whereas V4 sensors were produced on 8” wafers. For further information please contact Sensirion. Eventually all sensors will be V4. The Version can be distinguished by the tracking number on the sensor cap: V3 is strictly numeric whereas the code on V4 is alphanumeric.
  • Page 3 Evaluation Kit EK-H2 for SHTxx The EK-H2 system is now ready for measurement. For detailed description of ASD11 microprocessor board, including jumper settings, a command summary, and a pin diagram of the serial interface, please consult Appen- dix A. A H 3 1...
  • Page 4 Evaluation Kit EK-H2 for SHTxx Installation of Software und Start-Up After installation of SHTxx / ASD11 hardware, the following steps for the installation of the Humi Viewer V3.0 software for Windows 2000/NT/XP need to be taken: Action Item Insert the CD with the Humi View V3.0 software for Windows 2000/NT/XP.
  • Page 5: Appendix A: Asd11 Microprocessor Board

    Evaluation Kit EK-H2 for SHTxx Appendix A: ASD11 microprocessor board The ASD11 microprocessor board is used for processing the digital output signal of the SHTxx. There non-linearity and temperature dependencies are adjusted as described in the datasheet. The signal then is transmitted to the computer by RS-232 interface. The board is shown in Figure 5 with corre- sponding settings of the jumpers.
  • Page 6: Appendix B: Pin Diagram Shtxx

    Evaluation Kit EK-H2 for SHTxx Appendix B: Pin Diagram SHTxx SHT7x SHT1x on PCB with pins 1 2 3 4 Name Comment Serial clock input Supply Ground DATA Serial data bidirectional Figure 6 Pin description SHTxx Revision history Date Revision Changes 4.10.2006...
  • Page 7: Important Notices

    This warranty does not apply to any equipment which has not been installed and used within the specifications recommended If the Buyer shall purchase or use SENSIRION products for any by SENSIRION for the intended and proper use of the equip- unintended or unauthorized application, Buyer shall defend, ment.

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