×

相对湿度测量系统(CN0346)

消耗积分:2 | 格式:pdf | 大小:367.45KB | 2021-04-09

分享资料个

This version (25 Jan 2021 11:06) was approved by Ioana Chelaru.The Previously approved version (25 Jan 2021 11:05) is available.Diff

Table of Contents

Relative Humidity Measurement System (CN0346)

Overview

This circuit provides a contactless, capacitive based, relative humidity (RH) measurement solution with 2% relative humidity accuracy from 0% RH to 100% RH and replaces bulky hygrometer based methods. This circuit is ideal for applications where accurate, temperature controlled, noncontact humidity measurements are critical, such as HVAC, telecommunication cabinets, infant incubators, and other industrial or medical applications.

General Setup

Minimum PC/System Requirements

  • One PC with the following
    • Windows XP SP2, Windows Vista or Windows 7 Business/Enterprise/Ultimate editions
    • Intel Pentium processor (x86 compatible), 1GHz or faster
    • 512 MB RAM and 2 GB available hard disk space
    • .NET 3.5 Framework

How to Install the Evaluation Software

  1. Extract the files within the file CN0341 SDP Eval Software.zip and open the file setup.exe. It is recommended that you install the CN0341 SDP Evaluation Software to the default directory path C:/Program Files/Analog Devices/CN0341/ and all National Instruments products to C:/Program Files/National Instruments/
  2. Press “Next”.
  3. Press “Next”.
  4. Upon completion of the installation of the CN0341 SDP Eval Software, the installer for the ADI SDP Drivers will execute. Follow the on-screen prompts to install the drivers. It is recommended that you close all other applications before clicking “Next”. This will make it possible to update relevant system files without having to reboot your computer.
  6. Press “Next”.
  8. It is recommended that you install the drivers to the default directory path C:/Program Files/Analog Devices/SDP/Drivers/
  9. Press “Install” to install the Drivers and complete the installation of all software necessary to evaluate the EVAL-CN0341-SDPZ

Opening and Enabling the Evaluation Software

  1. Launch the executable found at C:/Program Files/Analog Devices/CN0346 and press the “Connect“ button.

Step by Step Instruction for Calibrating the System

  1. The following is a step by step guide for calibrating the EVAL-CN0346-SDPZ.
    1. Calibration requires the user to identify and input the maximum and minimum values of humidity and sensor capacitance.
    2. Place the PCB into a humidity controlled environment and adjust the environment to the desired minimum humidity value.
    3. Use an external LCR meter to measure the sensor capacitance.
    4. Place both values into the calibration tab shown below.
    5. Repeat these steps for the desired maximum humidity value and enter the values into the software.
    6. Input the calculated CAPDAC value into the box found at the bottom of the Calibration tab.
下载并关注上传者 低至0.43元/天 开通VIP 免费下载

声明：本文内容及配图由入驻作者撰写或者入驻合作网站授权转载。文章观点仅代表作者本人，不代表电子发烧友网立场。文章及其配图仅供工程师学习之用，如有内容侵权或者其他违规问题，请联系本站处理。 举报投诉

评论(0)
发评论

下载排行榜

全部0条评论

快来发表一下你的评论吧 !