The Minimum Thermometer is a precision liquid-in-glass thermometer specifically designed to measure the lowest air temperature over a given period. Utilizing the principle of differential expansion, this thermometer features a finely calibrated glass stem with a partially filled bulb containing a pure liquid. As temperatures drop, the liquid retracts, indicating the minimum temperature reached. Ideal for meteorological and environmental monitoring, the instrument ensures accurate and reliable minimum temperature readings with clear scale markings calibrated against standard thermometers. Its compact design allows easy installation in weather stations, laboratories, and field observation posts.
Key Features
| Features | Description |
|---|---|
| Measurement Type | Minimum air temperature |
| Thermometer Type | Liquid-in-glass thermometer |
| Liquid Fill | Pure liquid with differential expansion properties |
| Stem Design | Fine bore glass stem partially filled with liquid |
| Accuracy | Calibrated with standard thermometers for precise readings |
| Scale | Temperature scale marked on stem or attached scale |
| Applications | Meteorological observations, environmental monitoring |
| Temperature Range | Suitable for routine air temperature measurement including low extremes |
| Durability | Robust glass construction for field and laboratory use |
| Attributes | Description |
|---|---|
| Bulb Capacity | Fully filled with pure liquid |
| Stem Capacity | Partially filled with liquid to allow volume changes |
| Material | High-quality borosilicate glass |
| Scale Type | Calibrated temperature scale in degrees Celsius |
| Temperature Range | Typical measurement range from -30°C to 50°C (varies by model) |
| Length | Approximately 250mm (varies by model) |
| Operating Environment | Outdoor weather stations, indoor labs, industrial settings |
| Calibration Standard | Matched against certified standard thermometers |
*Disclaimer: The above description has been AI-generated and has not been audited or verified for accuracy. It is recommended to verify product details independently before making any purchasing decisions.
The thermometer uses a liquid in a glass bulb and a fine bore stem; as temperature decreases, the liquid contracts and moves down the stem, marking the lowest point reached until reset.
Yes, the minimum thermometer’s robust glass design and calibration make it ideal for accurate measurements in outdoor weather stations.
A pure liquid with known differential expansion properties relative to glass is used, commonly mercury or alcohol-based fluids, ensuring accuracy in indicator movement.
The thermometer is calibrated by comparing its readings against standard certified thermometers and adjusting the scale accordingly for precise temperature marking.
No, this particular product is designed solely for measuring minimum air temperatures; separate instruments are used for maximum or wet-bulb temperatures.
Brand: virtual
Country Of Origin: India
For routine observations of air temperature, including maximum, minimum and wet-bulb liquid-in-glass thermometers are commonly used. Such thermometers make use of the differential expansion of a pure liquid with respect to its glass container to indicate the temperature. The stem is a tube having a fine bore attached to the main bulb: The volume of liquid in the thermometer is such that the bulb is filled completely but the stem is only partially filled at all temperatures to be measured. The changes in volume of the liquid with respect to its container are indicated by changes in the length of liquid in the stem; by calibration with respect to a standard thermometer, a scale of temperature can be marked on the stem, or on a separate scale tightly attached to the stem.
