The application of soil temperature measurement by LM35 temperature sensors

2011 ◽  
Author(s):  
Cuihong Liu ◽  
Wentao Ren ◽  
Benhua Zhang ◽  
Changyi Lv
Keyword(s):  
Soil Temperature ◽  
Temperature Measurement ◽  
Temperature Sensors

scholarly journals Development of Shallow-Depth Soil Temperature Estimation Model Based on Thermal Response in Permafrost Area

2018 ◽  
Vol 8 (10) ◽  
pp. 1886 ◽  
Author(s):  
Keunbo Park ◽  
Heekwon Yang ◽  
Bang Lee ◽  
Dongwook Kim
Keyword(s):  
Soil Temperature ◽  
Temperature Measurement ◽  
Thermal Response ◽  
Estimation Model ◽  
Temperature Estimation ◽  
Soil Temperatures ◽  
Different Depths ◽  
The Relationship ◽  
Temperature Depth ◽  
Good Agreement

A soil temperature estimation model for increasing depth in a permafrost area in Alaska near the Bering Sea is proposed based on a thermal response concept. Thermal response is a measure of the internal physical heat transfer of soil due to transferred heat into the soil. Soil temperature data at different depths from late spring to the early autumn period at multiple permafrost sites were collected using automatic sensor measurements. From the analysis results, a model was established based on the relationship between the normalized cumulative soil temperatures (CRCST*i,m and CST*ud,m) of two different depths. CST*ud,m is the parameter of the soil temperature measurement at a depth of 5 cm, and CRCST*i,m is the parameter of the soil temperature measured at deeper depths of i cm (i = 10, 15, 20, and 30). Additionally, the fitting parameters of the mathematical models of the CRCST*i,m–CST*ud,m relationship were determined. The measured soil temperature depth profiles at a different site were compared with their predicted soil temperatures using the developed model for the model validation purpose. Consequently, the predicted soil temperatures at different soil depths using the soil temperature measurement of the uppermost depth (5 cm) were in good agreement with the measured results.

Differences in temperature measurement by commercial room temperature sensors: Effects of room cooling system, loads, sensor type and position

2021 ◽  
Vol 231 ◽  
pp. 110630
Author(s):  
Jun Shinoda ◽  
Angelos Mylonas ◽  
Ongun B. Kazanci ◽  
Shin-ichi Tanabe ◽  
Bjarne W. Olesen
Keyword(s):  
Temperature Measurement ◽  
Room Temperature ◽  
Cooling System ◽  
Temperature Sensors

Nanoceramic NiMn2O4 Powder-Based Resistance Thermometer for Soil Temperature Measurement Application in Agriculture

2018 ◽  
Vol 88 (1) ◽  
pp. 455-470
Author(s):  
S. K. Naveen Kumar ◽  
Almaw Ayele Aniley ◽  
A Akshaya Kumar ◽  
Renny Edwin Fernandez ◽  
Shekhar Bhansali
Keyword(s):  
Soil Temperature ◽  
Temperature Measurement ◽  
Resistance Thermometer

scholarly journals Semi-stationary measurement as a tool to refine understanding of the soil temperature spatial variability

2015 ◽  
Vol 29 (4) ◽  
pp. 449-457 ◽  
Author(s):  
Michal Lehnert ◽  
Miroslav Vysoudil ◽  
Petr Kladivo
Keyword(s):  
Spatial Variability ◽  
Soil Temperature ◽  
Temperature Measurement ◽  
Computer Technology ◽  
Spatial Data ◽  
Local Level ◽  
Limited Area ◽  
Using Data ◽  
Further Development ◽  
Stationary Measurement

AbstractUsing data obtained by soil temperature measurement at stations in the Metropolitan Station Network in Olomouc, extensive semi-stationary measurement was implemented to study the spatial variability of the soil temperature. With the development of the research and computer technology, the study of the temperature is not limited by the complexity of the processes determining the soil temperature, but by the lack of spatial data. This study presents simple semi-stationary soil temperature measurement methods, which can contribute to the study of the spatial variability of soil temperature. By semi-stationary measurement, it is possible to determine the average soil temperature with high accuracy and the minimum soil temperature with sufficient accuracy at a depth of 20 cm. It was proven that the spatial variability of the minimum soil temperature under grass at a depth of 20 cm can reach up to several degrees Celsius at the regional level, more than 1°C at the local level, and tenths of °C at the sublocal level. Consequently, the standard stationary measurement of the soil temperature can be regarded as representative only for a very limited area. Semi-stationary soil temperature measurement is, therefore, an important tool for further development of soil temperature research.

scholarly journals EFFECTS OF VARIATION IN MEASUREMENT CHAIN ON TEMPERATURE MEASUREMENT CALIBRATION WITH RESISTANT TEMPERATURE SENSORS

2019 ◽  
Vol 19 (3) ◽  
pp. 57-66
Author(s):  
Jessica DEUTSCH ◽  
Mirko RIEDEL ◽  
Jens MÜLLER ◽  
Steffen IHLENFELDT
Keyword(s):  
Temperature Measurement ◽  
Temperature Sensors ◽  
Platinum Resistance Thermometer ◽  
Platinum Resistance ◽  
Temperature Calibration ◽  
Resistance Thermometer ◽  
Temperature Calibrator ◽  
Industrial Platinum Resistance Thermometer ◽  
Set Up ◽  
Key Parameter

Temperature is one of the most important key parameter to consider in measurement and mechanical engineering, because every measurement has to be conducted with reference to standard temperature conditions (20 °C, ISO 1). Strictly speaking, almost every measurement depends on the accuracy of the temperature measurement, which requires proper calibration. Therefore, standards list detailed criteria to fulfil temperature calibration with high precision. In fact, any calibration is only valid, if the whole measurement chain is taken into account. This would make recalibration necessary with each variation of the components in the measuring set-up (varying cable length, different measurement channel etc.), which is time-consuming or even impossible in practice. For that reason, this paper presents a practicable calibration strategy, which specifies each component individually and later combines the calibration results according to the composition of the measurement chain. This provides a fast and useful way to achieve the required accuracy of temperature measurement. The examined, exemplary measurement chain consists of an industrial platinum resistance thermometer (IPRT), cables with different lengths, an electrical amplifier and a reference temperature calibrator.

Evaluation of Thermistors Used for Temperature Measurement in Automotive Industry

2018 ◽  
Vol 880 ◽  
pp. 157-162
Author(s):  
Dragos Tutunea ◽  
George Gherghina ◽  
Ilie Dumitru ◽  
Alexandru Dima
Keyword(s):  
Temperature Measurement ◽  
Automotive Industry ◽  
Temperature Sensors ◽  
Scientific Applications ◽  
Mathematical Functions ◽  
Automotive Systems ◽  
Temperature Measuring ◽  
Research Activities ◽  
Ntc Thermistors

Temperature sensors are widely used in different industrial and scientific applications. These sensors commercially available in various type and configurations allow the enhancement of automotive systems. The manufactures need to improve and upgrade the technology by research activities regarding the accuracy of temperature measuring using sensors. In this paper will analyze the trends, applications and technologies in automotive temperature sensors. PTC/NTC thermistors are measured and characteristics curves are determined as expression of mathematical functions.

scholarly journals 3C–SiC on glass: an ideal platform for temperature sensors under visible light illumination

RSC Advances ◽  
2016 ◽  
Vol 6 (90) ◽  
pp. 87124-87127 ◽  
Author(s):  
Abu Riduan Md Foisal ◽  
Hoang-Phuong Phan ◽  
Takahiro Kozeki ◽  
Toan Dinh ◽  
Khoa Nguyen Tuan ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Visible Light ◽  
Temperature Measurement ◽  
Glass Substrate ◽  
Temperature Sensors ◽  
Light Illumination ◽  
Optical Analysis ◽  
Visible Light Illumination ◽  
Cubic Silicon Carbide

This letter reports on cubic silicon carbide (3C–SiC) transferred on a glass substrate as an ideal platform for thermoresistive sensors which can be used for in situ temperature measurement during optical analysis.

scholarly journals Soil Improvement & Conservation Based on Biosoildam Integrated Smart Ecofarming Technology (Applied in Java Alluvial Land & Arid Region in East Indonesia)

2020 ◽  
Vol 5 (9) ◽  
pp. 599-608
Author(s):  
Nugroho Widiasmadi
Keyword(s):  
Soil Temperature ◽  
Microbial Activity ◽  
Infiltration Rate ◽  
Temperature Sensors ◽  
North Coast ◽  
Digital Information ◽  
Livestock Waste ◽  
Electrolyte Conductivity ◽  
Conductivity Sensor ◽  
The Relationship

Biosoildam a technology that combines agricultural and environmental activities (water & soil conservation) based on IOT. This analysis aims to improve alluvial agricultural lands by analyzing the relationship between microbial activity on acidity and the infiltration rate for alluvial lands that widely spread on the north coast of Java with Biosoildam Technology. Microbial activity as a biological agent / biofertilizer of slurry biomass decomposition taken from the livestock center and soil conditioning will affect soil electrolyte conductivity (EC). Other variables use the humidity and soil temperature parameters to control the relationship. Integrated Ecofarming where harvest straw for feed and livestock waste for fertilizer in micobial decomposting process is a cost-effective method that can improve soil quickly and measurably. The research took place from January to July 2018 on the red onion farms in Nganjuk Regency. The tools used include Double Ring Infiltrometer for measuring the infiltration rate at three radial distances from the centre of the microbial hole (biohole), microcontroller & wifi, electrolyte conductivity sensor as the soil fertility indication, pH meter for measuring soil acidity, and humidity and soil temperature sensors. The real-time information on soil paramaters is obtained through analogue inputs from EC, pH, humidity and temperature sensors, converted into digital information data by a microcontroller which later sent via wifi. Sensors are spreadly placed with radius A= 1,5 m ;B= 2 m ; C= 3m. Average Result : infiltration rate =40cm/h EC=1100 M=45 % T=25°C pH=6,5.

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