LPS25HB温差？

你好，
我还想知道，为什么LPS25HB测量的环境温度（15-25厘米）比其他温度传感器低4厘升（例如）
HTS221和
校准Sensirion的SHT21 a SHT31）。中提到的公式
http://www.st.com/content/ccc/resource/technical/document/technical_note/23/dd/08/f8/ac/cf/47/83/DM00242307.pdf/files/DM00242307.pdf/jcr：内容/翻译/ en.DM00242307.pdf
 使用42.5厘米的偏移量。它是固定值，还是可以在设备中设置的值？我使用
http://www.st.com/en/ecosystems/x-nucleo-iks01a1.html
 我希望可以排除不良的PCB设计和/或焊接。感谢您的任何建议。
大卫



以下为原文




Hello,
I would also like to know, why does LPS25HB measure ca 4 centigrades lower ambient temperature (15-25 centigrades) than other temperature sensors (for example
HTS221 and
calibrated Sensirion's SHT21 a SHT31).The formula mentioned in
http://www.st.com/content/ccc/resource/technical/document/technical_note/23/dd/08/f8/ac/cf/47/83/DM00242307.pdf/files/DM00242307.pdf/jcr:content/translations/en.DM00242307.pdf
uses an offset of 42.5 centigrades. Is it a fixed value, or value that can be set in the device?I use
http://www.st.com/en/ecosystems/x-nucleo-iks01a1.html
board, so I hope bad PCB design and/or soldering can be ruled out.Thank you for any advice.
David

LPS25HB主要用于压力测量，因此温度测量的准确度比HTS221或其他用于温度测量的校准传感器更差。数据表显示LPS25HB的温度精度为+ -2°C，但它是典型值，因此可能存在精度较差的部件，这可能是您的情况。



以下为原文




The LPS25HB is primarily intended for pressure measurement, so the accuracy of temperature measurement is worse that HTS221 or other calibrated sensors which are intended for temperature measurement. The datasheet says that the temperature accuracy of LPS25HB is +-2°C but is it typical value so there could be parts with worse accuracy, which could be your case.

谢谢你的回答。鉴于传感器特性应该是线性的，我将在固件中使用不同的偏移量，并希望获得更准确的结果。



以下为原文




Thank You for the answer. Given the fact that the sensor characteristics should be linear, I will use a different offset in firmware and hope for more accurate results.