Resistance thermometers measure temperature of an. object based on changes in electrical resistance of the. sensing element. Two types of resistance thermometers are. commonly used: thermistors and resistance temperature. devices (RTD). A thermistor uses a semiconductor as the sensing. element. The electrical resistance of the semiconductor, made mostly from metallic oxides (e.g., NiO), decreases. sharply as the temperature increases.
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1 According to the site Homewyse.com, the best quality commercial carpet is around $2.69 per square foot while a lesser quality can be around $1.70 to $2.20. 2  The said price range does not include the cost for installation. The price for commercial carpet varies according to the quality as well as the square footage of the area to be carpeted. 2  Most quality carpet can ranges anywhere from $1 to $3 per square foot; carpets of a lesser quality can be around $1 per square foot.