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AN607 Datasheet, PDF (1/41 Pages) Silicon Laboratories – HUMIDITY AND TEMPERATURE SENSOR DESIGNERS GUIDE | |||
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AN607
Si70XX HUMIDITY AND TEMPERATURE SENSOR DESIGNER âS GUIDE
1. Introduction
This designer's guide describes the Si70xx family of humidity and temperature sensor products in a variety of
different applications. The first half provides a detailed description of the Si70xx family of humidity sensors
including specific application examples. System-level design considerations including sensor placement, system
calibration and product use are discussed. Finally, special handling considerations for both the sensor device and
the end product containing the sensor are discussed.
The second half begins with a brief description of humidity and the various ways it is quantified. It is important to
understand the terminology and the relative merits of each measurement. Next, methods for measuring humidity
and measurement challenges are presented. Finally, the impact of humidity on comfort is discussed.
â Appendix AâIndustry Specifications and Guidelinesâ contains valuable reference information about industry
standards applicable to the measurement and control of humidity. â Appendix BâEquations for Vapor Pressure
and Humidity Calculationsâ contains a description of several equations useful for humidity related calculations. â
Appendix CâTerm, Unit, and Coefficient Referenceâ contains a convenient reference containing unit conversions,
coefficients and a glossary of humidity related terms used in this document. â Appendix DâNonlinear Correction of
Voltage Inputs with the Si7013â explains the nonlinear correction of the Si7013 voltage input. â Appendix Eâ
Thermal Model for a Sensor on a Paddleâ presents a thermal model for a sensor on a paddle.
Figure 1. Si7013 Relative Humidity and Temperature Sensor Shown with and without
Hydrophobic Cover Installed
Figure 2. Si7053/4/5 Temperature Sensor
Figure 3. Si7034 Relative Humidity and Temperature Sensor
Rev. 1.7 3/15
Copyright © 2015 by Silicon Laboratories
AN607
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