PrayogSetu Virtual Lab

Instrumentation & Control Engineering • Final Year Diploma Laboratory

RTD (Pt100) Temperature Measurement & Calibration Experiment

Interactive Laboratory Setup

Heater OFF
25.0 °C RTD TEMP INDICATOR 100.00 Ω PRECISION OHMMETER MOUNTING BAR HEATER POWER 1000 ml 750 ml 500 ml 100°C 50°C 0°C Ref. Thermometer Pt100 RTD (Pt100) Probe Stainless Steel Sheath Ceramic Insulator Core Platinum Sensing Element

Experiment Controls

60 °C

Live Telemetry Readouts

Bath Temperature 25.0 °C
RTD Resistance 100.00 Ω
Selected Wiring 3-Wire RTD
Measurement Error 0.00 °C
3-Wire RTD Selected: Uses a Wheatstone bridge compensation lead to eliminate wire resistance errors. Standard choice for industrial process control.

Calibration Curve: Resistance vs. Temperature

Platinum Resistance Principle (Atomic Scale)

Pt Pt Pt Pt Pt Pt Pt Pt
  1. Temperature Rises: Thermal energy enters the platinum element.
  2. Atomic Vibration Increases: Platinum atoms oscillate around lattice nodes.
  3. Electron Scattering: Free electron collisions become more frequent.
  4. Resistance Escalates: Higher proportional electrical resistance is registered by the indicator.

Laboratory Observation Log

Sr. Ref. Temp (°C) Measured Res (Ω) Ind. Temp (°C) Wiring Config Observation Remarks
1 25.0 °C 100.00 Ω 25.0 °C 3-Wire Ambient Room Temperature Calibration