international practical temperature scale
C2Technical/Scientific
Definition
Meaning
A defined system for calibrating temperature measurements using reproducible fixed points, designed for practical laboratory and industrial use.
A series of internationally agreed temperature reference standards (like ITS-90) that provides a precise, reproducible framework for calibrating thermometers and thermocouples. It defines specific fixed points (e.g., triple point of water, freezing point of metals) and interpolation procedures between them to create a continuous, reliable temperature scale.
Linguistics
Semantic Notes
Always a noun phrase. It is a proper, defined term, often abbreviated as IPTS or ITS (International Temperature Scale). It is not a physical instrument but a set of agreed-upon definitions and procedures. Modern usage typically refers to ITS-90 (1990 scale).
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Pronunciations differ slightly, and spelling conventions follow local norms (e.g., 'calibration' vs 'calibration' is identical).
Connotations
Identical technical connotation in both varieties.
Frequency
Equally rare in general usage, but standard and frequent within the specialised fields of metrology, physics, and engineering in both the UK and US.
Vocabulary
Collocations
Grammar
Valency Patterns
The International Practical Temperature Scale (ITS-90) is based on...Calibrate the instrument against/using the International Practical Temperature Scale.Measurements are traceable to the International Practical Temperature Scale.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “The gold standard for temperature (metaphorical, not a true idiom)”
Usage
Context Usage
Business
Virtually never used.
Academic
Common in physics, chemistry, and engineering publications and textbooks dealing with precise measurement.
Everyday
Never used in everyday conversation.
Technical
Core term in metrology labs, standards organisations (NIST, NPL), and high-precision manufacturing (e.g., aerospace, semiconductor).
Examples
By Part of Speech
verb
British English
- The laboratory will realise the International Practical Temperature Scale using a standard platinum resistance thermometer.
American English
- The process is designed to realize the International Practical Temperature Scale for all calibrations.
adverb
British English
- The sensor was calibrated internationally.
American English
- The sensor was calibrated internationally.
adjective
British English
- An ITS-90 compliant thermometer is essential.
- The international-scale calibration is valid worldwide.
American English
- An ITS-90 compliant thermometer is essential.
- The international-scale calibration is valid worldwide.
Examples
By CEFR Level
- The scientists use a special scale to measure very hot things. (Simplified paraphrase)
- For very accurate temperature measurement, experts use an international standard called a temperature scale.
- The International Practical Temperature Scale defines specific points, like the boiling point of water, to calibrate thermometers precisely.
- Measurements taken in our lab are directly traceable to the International Practical Temperature Scale (ITS-90), ensuring global comparability of results.
Learning
Memory Aids
Mnemonic
Think of an INTERNATIONAL agreement that provides a PRACTICAL 'ruler' for TEMPERATURE. It's the SCALE on that ruler.
Conceptual Metaphor
A MAP for temperature (it provides a detailed, agreed-upon landscape with fixed landmarks).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct translation of 'practical' as 'практичный' (meaning convenient/efficient). Here, 'practical' means 'suitable for actual use/application', closer to 'прикладной' or 'рабочий'.
- Do not confuse with 'шкала Цельсия' (Celsius scale). The IPTS defines how the Celsius/Kelvin scales are realised with high precision.
Common Mistakes
- Calling it the 'international practical temperature scale' (lowercase) - it is a proper name.
- Confusing it with the thermodynamic temperature scale (theoretical ideal vs. practical realisation).
- Using the term outside a metrology/standards context where it is not relevant.
Practice
Quiz
What is the primary purpose of the International Practical Temperature Scale?
FAQ
Frequently Asked Questions
It means the scale is designed for actual laboratory and industrial implementation, using reproducible fixed points and instruments, as opposed to a purely theoretical thermodynamic definition.
No. Celsius and Fahrenheit are units of temperature. The IPTS is a detailed procedure that defines how to realise the Kelvin and Celsius scales with extreme precision at specific points and between them.
It is the current (as of 2024) version of the International Temperature Scale, adopted in 1990. It superseded earlier versions (e.g., IPTS-68) and provides more precise definitions and fixed points.
It is used primarily by national metrology institutes (like NIST in the US or NPL in the UK), calibration laboratories, and industries requiring high-precision temperature measurement, such as aerospace, pharmaceuticals, and advanced materials science.