scholarly journals Evaluation of the ACR SmartButton thermometer and a low-cost protective case for continuous stream temperature measurement

Limnetica ◽  
2013 ◽  
pp. 11-22
Author(s):  
Molinero, Jon ◽  
Larrañaga, Aitor ◽  
Pérez, Javier ◽  
Martinez, Aingeru ◽  
Pozo, Jesús
Keyword(s):  
Temperature Measurement ◽  
Low Cost ◽  
Stream Temperature ◽  
Continuous Stream ◽  
Protective Case

scholarly journals Impacts of beaver dams on hydrologic and temperature regimes in a mountain stream

2015 ◽  
Vol 19 (8) ◽  
pp. 3541-3556 ◽  
Author(s):  
M. Majerova ◽  
B. T. Neilson ◽  
N. M. Schmadel ◽  
J. M. Wheaton ◽  
C. J. Snow
Keyword(s):  
Overland Flow ◽  
Stream Temperature ◽  
Mountain Stream ◽  
Complex Flow ◽  
Temporal Scales ◽  
Spatial And Temporal Scales ◽  
Beaver Dam ◽  
Temperature Regimes ◽  
Continuous Stream ◽  
Beaver Dams

Abstract. Beaver dams affect hydrologic processes, channel complexity, and stream temperature in part by inundating riparian areas, influencing groundwater–surface water interactions, and changing fluvial processes within stream systems. We explored the impacts of beaver dams on hydrologic and temperature regimes at different spatial and temporal scales within a mountain stream in northern Utah over a 3-year period spanning pre- and post-beaver colonization. Using continuous stream discharge, stream temperature, synoptic tracer experiments, and groundwater elevation measurements, we documented pre-beaver conditions in the first year of the study. In the second year, we captured the initial effects of three beaver dams, while the third year included the effects of ten dams. After beaver colonization, reach-scale (~ 750 m in length) discharge observations showed a shift from slightly losing to gaining. However, at the smaller sub-reach scale (ranging from 56 to 185 m in length), the discharge gains and losses increased in variability due to more complex flow pathways with beaver dams forcing overland flow, increasing surface and subsurface storage, and increasing groundwater elevations. At the reach scale, temperatures were found to increase by 0.38 °C (3.8 %), which in part is explained by a 230 % increase in mean reach residence time. At the smallest, beaver dam scale (including upstream ponded area, beaver dam structure, and immediate downstream section), there were notable increases in the thermal heterogeneity where warmer and cooler niches were created. Through the quantification of hydrologic and thermal changes at different spatial and temporal scales, we document increased variability during post-beaver colonization and highlight the need to understand the impacts of beaver dams on stream ecosystems and their potential role in stream restoration.

Open source, low-cost device for thermometric titration with non-contact temperature measurement

Talanta ◽  
2020 ◽  
Vol 216 ◽  
pp. 120975
Author(s):  
Keiti O. Alessio ◽  
Bruna Tischer ◽  
Mônica Voss ◽  
Iberê D. Teixeira ◽  
Bruno M. Brendler ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Open Source ◽  
Low Cost ◽  
Contact Temperature ◽  
Thermometric Titration

A Temperature Measurement Method Based on RC Discharge Circuit Using Platinum Resistance

2014 ◽  
Vol 1037 ◽  
pp. 143-146
Author(s):  
Xiao Qiong Zuo ◽  
Jian Ping Jia ◽  
Juan Lei
Keyword(s):  
Temperature Measurement ◽  
Measurement Method ◽  
Low Cost ◽  
Measuring Method ◽  
Experimental Results ◽  
Discharge Circuit ◽  
Platinum Resistance ◽  
Discharge Time ◽  
Temperature Resistance ◽  
Temperature Measuring

This paper proposes a temperature measuring method of low cost and stable precision based on platinum resistance. RC discharge circuit is composed of platinum resistor and fixed capacitor,the discharge time of fixed capacitance in the circuit is used for calculating the platinum resistance temperature resistance. The experimental results show that this is a simple and low cost method .

Design of Temperature Measurement System Based on Microcontroller

2014 ◽  
Vol 513-517 ◽  
pp. 4039-4042
Author(s):  
Cao Rui ◽  
Kong Jun Bao
Keyword(s):  
Temperature Measurement ◽  
Real Time ◽  
Measurement System ◽  
Low Cost ◽  
Digital Signal ◽  
Single Chip ◽  
Display Function ◽  
Stable Performance ◽  
Temperature Measurement System ◽  
Digital Temperature Sensor

This temperature measurement system is based on the control of AT89S52 single chip microcontroller, with temperature display function. Temperature information is changed into digital signal directly by a single bus digital temperature sensor DS18B20, and the digital signal is sent into microcontroller for real-time acquisition. The results are displayed through LCD module 1602 in real time. The system is with the characteristics of low cost, high precision, stable performance and convenient operation. The system can be extended to multi-point temperature detecting system easily, and adding temperature transfinite alarm function.

scholarly journals Low-cost Arduino-based Temperature Measuring System

2018 ◽  
Author(s):  
Nazareno de Oliveira Pacheco ◽  
Giovani Batista ◽  
Anderson Fontes Estuqui ◽  
Lucas da Silva
Keyword(s):  
Temperature Measurement ◽  
Real Time ◽  
Low Cost ◽  
Measuring System ◽  
Measurement Equipment ◽  
Performance Tests ◽  
Measurement Quality ◽  
Open Platform ◽  
Temperature Measuring ◽  
Commercial Equipment

The commercial equipment that carries out the measurement of temperature has a high cost. Therefore, this article describes the development of a temperature measurement equipment, which uses a microcontrolled platform, responsible for managing the data of the collected temperature signals and making available the acquired information, so that they can be verified in real time at the measurement site, or remotely. The construction of the temperature measurement equipment was performed using open platform hardware / software, where performance tests were carried out with the objective of developing a temperature measurement equipment that has measurement quality and low cost.

scholarly journals Temperature measurement performance of silicon piezoresistive MEMS pressure sensors for industrial applications

2015 ◽  
Vol 28 (1) ◽  
pp. 123-131 ◽  
Author(s):  
Milos Frantlovic ◽  
Ivana Jokic ◽  
Zarko Lazic ◽  
Branko Vukelic ◽  
Marko Obradov ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Low Cost ◽  
Pressure Sensors ◽  
High Sensitivity ◽  
Correction Method ◽  
Industrial Applications ◽  
Sensor Applications ◽  
Piezoresistive Pressure Sensors ◽  
Mems Pressure Sensors

Temperature and pressure are the most common parameters to be measured and monitored not only in industrial processes but in many other fields from vehicles and healthcare to household appliances. Silicon microelectromechanical (MEMS) piezoresistive pressure sensors are the first and the most successful MEMS sensors, offering high sensitivity, solid-state reliability and small dimensions at a low cost achieved by mass production. The inherent temperature dependence of the output signal of such sensors adversely affects their pressure measurement performance, necessitating the use of correction methods in a majority of cases. However, the same effect can be utilized for temperature measurement, thus enabling new sensor applications. In this paper we perform characterization of MEMS piezoresistive pressure sensors for temperature measurement, propose a sensor correction method, and demonstrate that the measurement error as low as ? 0.3?C can be achieved.

Two-Dimensional Temperature Measurement in Free Boundary Environment by Using Moiré Deflectometry With Monochrome LED Lamp

2013 ◽  
Author(s):  
Chien-Chih Chen ◽  
Ying-Yan Wu ◽  
Chen-Ching Ting
Keyword(s):  
Temperature Distribution ◽  
Free Boundary ◽  
Temperature Measurement ◽  
Low Cost ◽  
Vertical Wall ◽  
Ccd Camera ◽  
Laser Printer ◽  
Measured Temperature ◽  
Two Dimensional ◽  
Moiré Deflectometry

This article develops low cost moiré deflectometry for two-dimensional temperature measurement in free boundary environment. Experimental setup uses a red monochrome LED lamp with wavelength range of 625–635 nm as light source. In process, the light first runs through the convex lens and then propagates to the parabolic mirror with diameter of 406 mm and f/4.5 for generating the parallel light. The parallel light further propagates to test object and through two gratings with both pitch 254 lpi which are printed by laser printer. Behind the two gratings, a CCD camera is applied to capture the image, the distorted fringes. Based on the moiré deflectometry theory, the two-dimensional temperature distribution in free boundary environment can be determined in terms of the captured fringe shift analysis. This work has successfully measured the two-dimensional temperature distribution in free boundary environment with heat source models of 40–95 °C vertical wall, 60 W light bulb, and burning candle flame. The measured temperature deviations between moiré deflectometry and thermocouple thermometer are all less than 5%.

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