PTR India Technical Blog

Calibration, Metrology & Quality Insights

In-depth technical articles on instrumentation, measurement uncertainty, NABL/ISO 17025, and laboratory best practices — written by practitioners.

Search: "calibration" · 4 articles
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Calibration in Simple Terms: Meaning, Importance, Process and Examples
Calibration in Simple Terms: Meaning, Importance, Process and Examples

Calibration is the process of comparing a measuring instrument with a known reference standard to check its accuracy. It helps identify error, apply correction where required, maintain reliable measurements, support audits, and build confidence in quality decisions.

Shakti Sindhu
30 May 2026
RTD Working Principle: How Resistance Temperature Detectors Measure Temperature
RTD Working Principle: How Resistance Temperature Detectors Measure Temperature

An RTD, or Resistance Temperature Detector, measures temperature by sensing how the electrical resistance of a metal changes with temperature. This article explains the RTD working principle in simple terms, including PT100, PT1000, wiring methods, advantages, limitations, applications, and calibration importance.

Shakti Sindhu
30 May 2026
Traceability in Calibration: The Backbone of Reliable Measurement
Traceability in Calibration: The Backbone of Reliable Measurement

Traceability in calibration ensures that every measurement result is linked to recognized national or international standards through a documented, unbroken chain of calibrations with known uncertainty. It is the foundation of reliable, comparable, and audit-ready measurements.

Shakti Sindhu
30 May 2026
Uniformity and Stability in Temperature Sources: What They Mean and Why They Matter
Uniformity and Stability in Temperature Sources: What They Mean and Why They Matter

Understand the difference between stability and uniformity in temperature sources such as dry blocks, liquid baths, ovens, and chambers. This article explains how stability shows temperature consistency over time, while uniformity shows temperature distribution across different locations, and why both are essential for reliable calibration results.

Shakti Sindhu
29 May 2026