Description
Description:UNIT Kmeter is a K-type thermocouple sensor with I2C communication interface. The hardware adopts ESP32-C3 main control + MAX31855KASA+T 14bit thermocouple digital conversion chip. The internal ESP32-C3 integrated firmware communicates with the thermocouple digital IC to process the raw data and expose the I2C interface. The user can easily obtain the processed temperature data. This product is specially designed for K-type thermocouples. The conversion chip supports thermocouple probes with a measuring range of -200°C to 1350°C, and adopts a general standard flat interface, which is convenient for subsequent replacement of different measurement probes with different ranges to match different needs. It is suitable for industrial temperature collection, monitoring and other scenes that have high requirements for temperature measurement range.
Product Features:
ESP32-C3 (support I2C firmware update)MAX31855KASA+T:14Bit ADC0.25°C resolution, accuracy ±2%Support probe type: K typeSupport the measurement range of the connected probe -200°C to 1350°CI2C communication interface addr: 0x66
Specification:
Thermocouple digital conversion IC: MAX31855KASA+T: 14Bit ADC, 0.25°C resolution, accuracy ±2%, support probe type: K type, support measurement range -200°C to 1350°CStandard probe specifications: K-type thermocouple, measuring range -50°C to 250°C, line length 1m, thermal response time <1s, interface: standard flat copper plugCommunication protocol: I2C, device address: 0x66Power consumption: 5V@24mANet weight: 9.3gGross weight: 21gProduct size: 56 x 24 x 9.6 mmPacking size: 93 x 138mm
Package included:
1 x Kmeter Unit1 x K-type thermocouple probe (measuring range -50°C to 250°C, wire length 1m)1 x HY2.0-4P cable (20cm)
Applications:
Industrial temperature collectionConstant temperature control/monitoring scene
Protocol:
Protocol type I2CI2C Address: 0x66
addrdata lengthdescreturn values0x664Bytethermocouple and internal temperature dataByte[0] thermocouple_H
Byte[1] thermocouple_L
Byte[2] internal_H
Byte[3] internal_L
calculate
thermocouple = (thermocouple_H << 8) + thermocouple_L;internal = (internal_H << 8) + internal_L;
thermocouple_temp = 0.25f * (thermocouple >> 2);internal_temp = 0.0625f * (internal >> 4);
PinMap
UNIT Kmeter
M5CORE - PORT AG21G225VGNDKmeterSDASCLVCCGND
Schematic
Example
Arduin0Kmeter UNIT auto AutoScaleGraphKmeter UNIT get sampleUNIT_KMeter - Lib
