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ToolsRTD/Thermocouple Lookup

RTD / Thermocouple Lookup

Convert RTD Pt100 resistances (Ω) or standard thermocouple thermoelectric EMF voltages (mV) to temperatures and vice versa.

Purpose & Calculation Breakdown (India)

Purpose of this Tool: Apply Callendar-van Dusen equations for Pt100 RTDs or standard ITS-90 thermocouple thermoelectric sensitivities to find temperature lookup points.

• Pt100 Resistance Formula (T >= 0°C):R(T) = 100 \times (1 + A \cdot T + B \cdot T^2)
• Pt100 Resistance Formula (T < 0°C):R(T) = 100 \times (1 + A \cdot T + B \cdot T^2 + C \cdot (T - 100) \cdot T^3)
• Thermocouple Voltage Mapping:EMF_{mV} = Temp \times Sensitivity\ slope
Select temperature transducer model
Select driving input category
Scale: 18 to 390 Ω
Ω
18390

Lookup Results

Target Temperature100.012
°C
Transducer Electrical Signal138.510
Ω

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