Definition

Noun: A self-registering thermometer is a type of thermometer that automatically and continuously records temperature measurements over a period of time. It creates a permanent record, such as a chart or graph, without requiring manual observation or notation at the moment of measurement.

Usage

This term is used specifically to describe an instrument designed for automatic temperature logging. It is a technical term common in meteorology, industrial process monitoring, and scientific research.

Examples

• The weather station uses a self-registering thermometer to provide a continuous record of daily temperature fluctuations.
• To monitor the laboratory's storage unit, they installed a self-registering thermometer that charts the temperature every hour.
• Historical climate data often comes from the charts produced by self-registering thermometers.

Advanced Usage

• The term implies a mechanism (often mechanical or electromechanical) that inscribes a line on a rotating drum or digitally logs data points.
• It is often contrasted with a simple "indicating thermometer," which only shows the current temperature and requires a person to read and record it.

Variants and Related Words

• Thermograph: This is a direct synonym for a self-registering thermometer. It is a compound word from "thermo-" (heat) and "-graph" (writer/recorder).
• Recording thermometer: A more descriptive, non-compound phrase with the same meaning.
• Maximum-minimum thermometer: A specific type of self-registering thermometer that records only the highest and lowest temperatures reached during a period.

Synonyms

• Thermograph
• Recording thermometer
• Temperature recorder

Antonyms / Contrasting Terms

• Indicating thermometer: A thermometer that only displays the current temperature value without creating a record.
• Manual thermometer: A thermometer that requires a person to read and write down the measurement.

Noun

1. a thermometer that records the temperature automatically