Question

An interfacing card with a 16-bit analogue-digital (A/D) converter is used to measure a PT100 Resistance Temperature Detector (RTD) temperature of range -200C to 500C. A Wheatstone Bridge is used to ease the temperature measurement in voltage. The Wheatstone Bridge is balance with zero output voltage at 0°C and produces an output of 75mv at 500C. An amplifier with a gain G = 50 is used to produces suitable input for the A/D converter. The A/D converter is set to be able to measure an input voltage of range -5V to +5V and the conversion is stored in three address registers. Determine: a. the resolution of the A/D converter. b. the minimum temperature resolution can be measured by the A/D converter c. the measured temperature if the data acquisition program read a value of 0xFACE from the A/D address registers.. Clearly show all calculations. Assume a linear relationship between the RTD temperature and the bridge output voltage.

          An interfacing card with a 16-bit analogue-digital (A/D) converter is used to measure a PT100 Resistance Temperature Detector (RTD) temperature of range -200C to 500C. A Wheatstone Bridge is used to ease the temperature measurement in voltage. The Wheatstone Bridge is balance with zero output voltage at 0&deg;C and produces an output of 75mv at 500C. An amplifier with a gain G = 50 is used to produces suitable input for the A/D converter. The A/D converter is set to be able to measure an input voltage of range -5V to +5V and the conversion is stored in three address registers. Determine:
a. the resolution of the A/D converter.
b. the minimum temperature resolution can be measured by the A/D converter
c. the measured temperature if the data acquisition program read a value of 0xFACE from the A/D address registers..
Clearly show all calculations. Assume a linear relationship between the RTD temperature and the bridge output voltage.

An interfacing card with a 16-bit analogue-digital (A/D) converter is used to measure a PT100 Resistance Temperature Detector (RTD) temperature of range -200C to 500C. A Wheatstone Bridge is used to ease the temperature measurement in voltage. The Wheatstone Bridge is balance with zero output voltage at 0 deg;C and produces an output of 75mv at 500C. An amplifier with a gain G = 50 is used to produces suitable input for the A/D converter. The A/D converter is set to be able to measure an input voltage of range -5V to +5V and the conversion is stored in three address registers. Determine:
a. the resolution of the A/D converter.
b. the minimum temperature resolution can be measured by the A/D converter
c. the measured temperature if the data acquisition program read a value of 0xFACE from the A/D address registers..
Clearly show all calculations. Assume a linear relationship between the RTD temperature and the bridge output voltage.

Added by Michael C.

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