功能

• Description
• A PT100 is a Platinum RTD(Resistance Temperature Detector)with a resistance of 100Ω at 0°C which changes with temperature. It is suitable for applications in the temperature range of -200°C to 600°C but are more commonly d in the range -50°C to +250°C.
• To this sensor with our Qwiic PT100 ADC please connect the red wires to terminals 3 4. Connect the white wire to terminal 2. Short the A and B pads on the back of the Qwiic PT100 PCB. Be sure to Example4-3-Wire from within the ADS122C04 library.
• How do PT100 sensors work? On four-wire sensors the red wires are connected to one end of the resistor; the white wires are connected to the other end. For three-wire, they the same scheme:the two reds to one end; and one white to the other. Using a DMM you should see ~1 Ohm between the red wires; and ~100 Ohms between red and white.
• Features
• 100Ω nominal resistance at 0°C
• Temperature Coefficient(0°C up to 100°C):3.85 - 10-3 K-1
• Tolerance classes to DIN EN 60751:A, B
• Operating Temperature Range:-50°C up to 550°C
• Measurement Current(DC)at 25°C:1mA
• Maximal Permissible Peak Current(DC)at 25°C:3mA
• Insulation Resistance:> 10MΩ
• Self-heating at 0°C:< 0.5 K/mW