CJMCU-6675 MAX6675 K-type Thermocouple Sensor ModuleDescription:CJMCU-MAX6675 is a complex monolithic thermocouple-digital converter, the internal signal conditioning amplifier, 12-bit analog / digital converter thermocouple cold-junction compensation sensor and correction, digital controller, an SPI compatible interface and an associated control logic.
CJMCU-MAX6675 has internal thermocouple signal is converted to a voltage compatible with the ADC input channel signal conditioning amplifiers, T and T- input connected to the low-noise amplifier A1, to ensure high accuracy detection input, while connecting wires and thermocouple isolate the source of interference. Thermocouple output thermoelectric power amplification through a low noise amplifier A1, A2 and then through the voltage follower buffer after being applied to the input of the ADC. Before the temperature value is converted to a voltage equal to the value of the temperature, the need for thermocouple cold junction temperature compensation, that is the difference between the MAX6675 cold-junction temperature and ambient temperature 0 ¿¿¿ actual reference value
Thermocouple function is to detect hot and cold ends of the temperature difference between the thermocouple hot junction temperature can be 0 ¿¿¿ -1023.75 ¿¿¿ range. That is the cold side installation CJMCU-MAX6675 board ambient temperature, the temperature is varied within the range of 20 ¿¿¿ -85 ¿¿¿. When the cold junction temperature fluctuations, temperature MAX6675 able to accurately detect the change in the hot end. MAX6675 are compensated for detecting and correcting changes in ambient temperature by the cold end, the device can be ambient temperature through the internal temperature sensing diode is converted to a temperature compensated voltage, in order to generate the actual thermocouple temperature measurements, MAX6675 thermocouple output from the monitor diode the output voltage measurement. The device's internal circuitry diode voltage and thermocouple voltage to ADC
Package included:1 x CJMCU-6675 MAX6675 K-type Thermocouple Sensor Module
