Celsius Laboratory Thermometers
Last Updated: April 1, 2025
Description
Celsius laboratory thermometers are precision instruments designed to measure temperature. They typically consist of a sealed glass tube containing a liquid, such as mercury or red alcohol, which expands and contracts in response to temperature changes. This expansion or contraction is visible as the liquid moves up or down the tube, providing a direct reading of the temperature.
Working Principle
Celsius laboratory thermometers operate on the principle of thermal expansion. As the temperature of the environment increases, the liquid inside the thermometer expands. This expansion causes the liquid to rise in the narrow tube, indicating a higher temperature. Conversely, as the temperature decreases, the liquid contracts and moves down the tube. This simple yet effective mechanism allows for accurate temperature readings. These thermometers are particularly useful because they provide a direct and immediate visual representation of temperature changes, making them easy to read and interpret.
Applications
Celsius laboratory thermometers are widely used in various scientific and research settings. They are essential for monitoring experiments where precise temperature control is crucial. For example, they are used in chemical laboratories to ensure reactions occur at the correct temperatures, in biological labs to maintain the appropriate conditions for cell cultures, and in physics experiments where temperature variations can significantly impact results. Additionally, they are employed in the calibration of other laboratory instruments to ensure accuracy and reliability.
Limitations
One limitation of Celsius laboratory thermometers is their fragility due to the glass construction, which makes them susceptible to breakage. Additionally, they may not be suitable for environments with extreme temperatures beyond the range of the liquid used, such as mercury or alcohol. The accuracy of these thermometers can also be affected by external factors such as pressure changes or the presence of air bubbles in the liquid column.
Considerations
When selecting a Celsius laboratory thermometer, several factors should be considered. Initial costs can vary depending on the materials used, with mercury thermometers generally being more expensive than alcohol-based ones. Operating expenses are minimal, as these thermometers do not require power or frequent calibration. However, their durability is a concern due to the potential for breakage. Accuracy is generally high, but regular checks and maintenance are recommended to ensure consistent performance. Replacement and maintenance costs are typically low, but care should be taken to handle and store these instruments properly to extend their lifespan.
from Kessler Instruments Inc.
Used for acid heat, within ASTM specification, immersion of 152 millimeters [See More]
- Display / Scale Characteristics: Celsius/Centigrade
- Divisions: 0.5000
- Range: -1 to 105
- Full / Partial: Partial Immersion
from CANNON Instrument Company
For Highly Accurate and Precise Temperature Measurement. The Dostmann P795 dual channel digital thermometer is a precision hand held device for accurate temperature measurement. Dual channel technology allows simultaneous display of two readings or a differential result to meet the needs of... [See More]
- Display / Scale Characteristics: Celsius/Centigrade
- Range: -200 to 850
- Type: Digital Thermometer
- Configuration/ Features: Probe (optional feature)
from TEGAM, Inc.
Handheld Thermocouple Calibrator. 4 Thermocouple Types. J / K / T /E +mV. New challenges require new tools. TEGAM has rethought thermocouple calibrators to offer you the performance you need today without complicating your work. The new 940 Series provides laboratory grade calibrations in a highly... [See More]
- Display / Scale Characteristics: Fahrenheit; Celsius/Centigrade
- Range: -418 to 2502
- Type: Digital Thermometer
- Range: -250 to 1372
from TEGAM, Inc.
Calibrator Thermometer. °C & °F (K, J & T). Used by calibration technicians or manufacturing engineers to perform field calibrations on K-J-T thermocouple thermometers. The single input/output meter doubles as a K-J-T thermometer. Technical Specifications. Accuracy : ±0.5... [See More]
- Display / Scale Characteristics: Fahrenheit; Celsius/Centigrade
- Range: -346 to 2502
- Type: Digital Thermometer
- Divisions: 0.5000
from TEGAM, Inc.
Calibrator Thermometer. °C & °F (Multi T/C's). Used by calibration technicians or manufacturing engineers to perform field calibrations on K-J-T-E-N-B-R-S-G-C and D-type thermocouple thermometers in the lab or out in the field. This device is a handy verification tool for QA inspectors... [See More]
- Display / Scale Characteristics: Fahrenheit; Celsius/Centigrade
- Range: -346 to 4201
- Type: Digital Thermometer
- Divisions: 0.5000
from TEGAM, Inc.
Calibrator Thermometer. °C & °F. (K, J, T, & E, Ohms, 100 Ohms RTD & Thermistor). The ideal solution for anyone that needs a handheld, multi-purpose calibrator to perform field or lab tests on temperature probes or thermometers. These meters will simulate, source, measure and... [See More]
- Display / Scale Characteristics: Fahrenheit; Celsius/Centigrade
- Range: -346 to 2502
- Type: Digital Thermometer
- Divisions: 0.2000 to 0.5000
from TEGAM, Inc.
Calibrator Thermometer. °C & °F. (Multi T/Cs, Ohms, 100 Ohms & 1000 Ohms RTD). The ideal solution for anyone that needs a hand held, multi-purpose calibrator to perform field or lab tests on temperature probes or thermometers. The 855 meter will simulate, source, measure and record... [See More]
- Display / Scale Characteristics: Fahrenheit; Celsius/Centigrade
- Range: -346 to 4201
- Type: Digital Thermometer
- Divisions: 0.2000 to 0.5000
from TEGAM, Inc.
Thermistor Thermometer. -55 °C to 150 °C, -70 °F to 300 °F. Tegam's Model 866 thermistor thermometer measure temperatures from -55 °C to 150 °C. Tegam's Model 865 thermistor thermometer measure temperatures from -70 °F to 300 °F. Compatible with all YSI Series 400... [See More]
- Display / Scale Characteristics: Fahrenheit; Celsius/Centigrade
- Range: -70 to 300
- Type: Digital Thermometer
- Range: -55 to 150
from TEGAM, Inc.
Thermocouple Thermometer. Factory Tough, Lab Accurate, Dual Input. K, J, T & E. The Model 912A is a dual channel digital thermometer compatible with type K, J, T or E thermocouple probes to provide a wide range of temperature measurements, (-418 °F to 2502 °F) and boasts a 2000 hour... [See More]
- Display / Scale Characteristics: Fahrenheit; Celsius/Centigrade
- Range: -418 to 2502
- Type: Digital Thermometer
- Range: -250 to 1372
from TEGAM, Inc.
Thermocouple Thermometer. Factory Tough, Lab Accurate, Dual Input. K, J, T & E. The Model 912B is a dual channel digital thermocouple thermometer compatible with type K, J, T or E thermocouple probes to provide a wide range of temperature measurements, (-418 °F to 2502 °F) and boasts a... [See More]
- Display / Scale Characteristics: Fahrenheit; Celsius/Centigrade
- Range: -418 to 2502
- Type: Digital Thermometer
- Range: -250 to 1372
from TEGAM, Inc.
Thermocouple Thermometer. Factory Tough, Lab Accurate, Single Input. K, J, T & E. The Model 911B is a single channel digital thermometer compatible with type K, J, T or E thermocouple probes to provide a wide range of temperature measurements, (-418 °F to 2502 °F) and boasts a 2000 hour... [See More]
- Display / Scale Characteristics: Fahrenheit; Celsius/Centigrade
- Range: -418 to 2502
- Type: Digital Thermometer
- Range: -250 to 1372