RTD / PT100 Temperature Sensor
Calibrate PT100 and RTD sensors to IEC 60751 with lower uncertainty than thermocouples for high-precision applications.
Standards
IEC 60751, ITS-90, ISO/IEC 17025
Typical Interval
12 months
Uncertainty Range
±0.03–0.1°C
What Is RTD / PT100 Temperature Sensor?
RTDs, especially PT100 (platinum 100Ω at 0°C), offer superior accuracy and stability compared to thermocouples, making them the preferred sensor for pharmaceutical, food, and chemical process control. Calibration verifies the R(T) characteristic against IEC 60751 at multiple temperature points.
Applicable Standards
Primary standards: IEC 60751, ITS-90, ISO/IEC 17025
ISO/IEC 17025-accredited laboratories must maintain an unbroken traceability chain from the calibration result back to NIMT (Thailand's national metrology institute) or another internationally recognised NMI.
Typical Measurement Uncertainty
Expanded uncertainty is typically ±0.03–0.1°C, depending on the measurement range, reference equipment used, and environmental conditions. The actual uncertainty will be stated on your calibration certificate.
Recommended Calibration Interval
A calibration interval of 12 months is generally recommended. The appropriate interval for your specific instrument depends on usage frequency, environmental exposure, and any applicable regulatory or customer requirements.
What Your Calibration Certificate Will Include
- Calibration results — instrument indication vs. reference value at each test point
- Error and expanded uncertainty (U) at k=2 (95% confidence level)
- Traceability chain to NIMT or a recognised NMI
- Environmental conditions during calibration (temperature, humidity)
- Calibration date, certificate number, and authorised signature
Find a RTD / PT100 Temperature Sensor Calibration Lab in Thailand
ThaiLabHub lists ISO 17025-accredited calibration laboratories across Thailand. Search our directory to find labs that offer rtd / pt100 temperature sensor services, with scope details, location, and contact information.
For Labs: Manage RTD / PT100 Temperature Sensor Jobs with LabSync
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Frequently Asked Questions
Why is it important to calibrate a RTD / PT100 Temperature Sensor?+
Temperature has a direct impact on chemical reactions, biological processes, and material properties. A RTD / PT100 Temperature Sensor that drifts even 1°C can invalidate test results or damage products. Calibration anchors readings to ITS-90 or relevant standards (IEC 60751, ITS-90, ISO/IEC 17025) within ±0.03–0.1°C.
How often should a RTD / PT100 Temperature Sensor be calibrated?+
Most RTD / PT100 Temperature Sensors should be calibrated every 12 months under normal operating conditions. High-use environments, harsh conditions (vibration, temperature extremes), or regulatory requirements (FDA, GMP, ISO 17025) may necessitate more frequent calibration. Always follow the manufacturer's recommended interval as a baseline and consult your lab's quality plan.
What does a RTD / PT100 Temperature Sensor calibration certificate show?+
A calibration certificate issued under ISO/IEC 17025 includes: the instrument identification (make, model, serial number), the reference standards used (with their own traceability chain), the measurement points tested, before/after correction values, the expanded measurement uncertainty (±0.03–0.1°C), the environmental conditions during calibration, the calibration date and next-due date, and the signature of the authorized calibration engineer. This certificate is the evidence required for audits and accreditation.
Labs offering temperature calibration
Nakhon Ratchasima Metrology Center
Nakhon Ratchasima
ISO/IEC 17025:2017Chiang Mai Metrology Center
Chiang Mai
ISO/IEC 17025:2017Phuket Marine Calibration Center
Phuket
ISO/IEC 17025:2017Rayong Petrochemical Calibration Center
Rayong
ISO/IEC 17025:2017Eastern Seaboard Calibration Center Chonburi
Chonburi
ISO/IEC 17025:2017National Institute of Metrology Thailand (NIMT)
Pathum Thani
ISO/IEC 17025:2017 (TIS 17025-2561)Related Calibration Services
Manage calibration with LabSync
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