April 8, 2018
TIDA-01526 implements a full DTM sub-system with two PT500 or PT1000 sensors, meeting the requirements for heat and cold meters per EN1434. The serial configuration supports both 2-wire sensors for residential meters or 4-wire sensors for heat calculators. The differential temperature accuracy of the solution is better than 20 mK over the measured temperature range of 0 to 150°C for 2-wire and 4-wire sensors, using offset and gain calibration.
1Overview of temperature measurement in heat meters (2)
This section introduces the heat and cold meter training series. The series covers the basics of RTD sensors and their usage in heat and cold meters.
2Measuring RTD sensors with Delta-Sigma ADS1220 family (3)
ADS1220 Delta-Sigma family uses the ratiometric approach for measuring RTD sensors with the built-in current excitation source.
3Differential Temperature Measurement sub-system reference design (1)
TIDA-01526 implements a high-precision Differential Temperature Measurement (DTM) subsystem using a 24-bit, low-power, Delta-Sigma ADC.
4Digital temperature sensor replacement of RTD sensors with TMP116 (1)
The TMP116 digital precision temperature sensor for the -55 to +125ºC range achieves higher accuracy than the Class AA PT sensor with a 1-point calibration.