The EVAL-CN0172-SDPZ is a circuit evaluation board for three channel thermocouple temperature measurement system with 0.25°C accuracy. It is designed to measure the temperature of three K type thermocouples at the same time using the AD7793 24bit sigma delta ADC. The reference junction temperature is measured using the ADT7320, a ±0.25°C accurate, 16bit digital SPI temperature sensor. Achieving a precision thermocouple measurement requires a signal chain of precision components that amplifies the small thermocouple voltage, reduces noise, corrects nonlinearity and provides accurate reference junction compensation (commonly referred to as cold junction compensation). This circuit addresses all these challenges for measuring thermocouple temperature with better than ±0.25°C accuracy. This type of application is popular where a cost effective, accurate temperature measurement is required over the wide temperature ranges offered by thermocouples.
- Three channel K type thermocouple measurement system
- Typical temperature range of -200°C to +1200°C
- Highly accurate temperature measurement to 0.25°C
- 16bit digital temperature sensor used for cold junction compensation
传感与仪器, 通信与网络
(EN)
