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DESIGN APPROACH TO USE PLATINUM RTD SENSOR IN SNOW TEMPERATURE MEASUREMENTS
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DESIGN APPROACH TO USE PLATINUM RTD SENSOR IN SNOW TEMPERATURE MEASUREMENTS

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The snow temperature measurement is a very critical area of hydrological instrumentation. The measured data is used to assess the run-off water, snow pack strength and snow avalanche. The …

The snow temperature measurement is a very critical area of hydrological instrumentation. The measured data is used to assess the run-off water, snow pack strength and snow avalanche. The hydrological and snow avalanche forecast models require that temperature be measured at different points in the snow pack, above the snow pack and below the snow pack. A state-of-the-art multi-point snow temperature measurement system has been designed and developed for this purpose. The type of the temperature sensor used is a critical aspect of this physical parameter instrumentation. After lot of study of various aspects of different temperature sensing elements, the platinum RTD PT-100 has been selected as sensing element. This paper describes the selection criteria and performance evaluation of Platinum RTD sensor used in snow temperature measurement applications. The paper also highlights design techniques incorporated for minimizing the measurement error encountered while using Platinum RTD sensor.

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