7Semi PT100 RTD 3-Wire Temperature Sensor Probe, 1m, -70 to 300°C
7Semi PT100 RTD 3-wire temperature sensor probe, 1m, -70 to 300°C – a high-precision resistance temperature detector.
PT100 RTD 3-Wire Temperature Sensor Probe (7Semi)
Overview
High-precision RTD (Resistance Temperature Detector) sensor
Uses platinum (Pt100) sensing element
Measures temperature from -70C to 300C
Industrial-grade probe with 1-meter cable
Working Principle
Platinum element has 100 resistance at 0C
Resistance increases with temperature
Measured resistance converted to temperature value
3-wire design compensates lead wire resistance errors
Key Specifications
Sensor Type: PT100 RTD (Platinum)
/ Accuracy: Class A (0.15C typical)
Resistance: 100 at 0C
Wire Type: 3-wire configuration
Probe Material: Stainless steel
Probe Size: ~2 inch length, ~6 mm diameter
Cable Length: 1 meter
Output: Analog resistance
Module Components
Platinum RTD sensing element
Stainless steel probe (waterproof)
3 insulated wires (for compensation)
High-temperature insulated cable
Features
High accuracy & stability (industrial standard)
3-wire compensation reduces measurement error
Excellent linearity over wide temperature range
ust design for harsh environments
Long-term low drift performance
Applications
Industrial temperature control systems
HVAC systems
Laboratory measurements
Food & chemical processing
IoT and embedded monitoring systems
Usage Tips
Requires RTD amplifier module (e.g., MAX31865)
Use proper calibration for high accuracy
Avoid mechanical stress on probe tip
Ensure good thermal contact with measured surface/liquid
Advantages
Very high accuracy compared to thermistors
Industrial reliability
Limitations
Requires external interface circuit (not plug-and-play)
Slower response than thermocouples
Slightly higher cost than basic sensors
Summary
Industrial-grade temperature sensor using platinum RTD
Provides high accuracy and stability
Uses 3-wire configuration for precise measurement
Best suited for precision and industrial applications