کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10412376 | 894894 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Design and performance of psychrometric soil water potential meter
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The paper presents the design and performance of an eight-channel thermocouple psychrometer working in psychrometric mode. The availability of advanced electronic components of high accuracy and microcontroller supervision enables to build a simple, reliable and not expensive device for use in the range water potential from â6 up to â0.2 MPa and possibly higher. The operation of the meter is computer controlled, the input voltage is sampled with the 50 Hz frequency and ±50 nV resolution. The calibration procedure of the psychrometric sensors available from vendors is presented, too. The meter and the probes can be easily adapted to automatic soil status monitoring stations and also to determine properties of materials used in building and food industries in the relative humidity range of 95-99.99%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 118, Issue 1, 31 January 2005, Pages 86-91
Journal: Sensors and Actuators A: Physical - Volume 118, Issue 1, 31 January 2005, Pages 86-91
نویسندگان
Wojciech Skierucha,