The Thomas Traceable hygrometer/thermometer is a dual-range digital thermometer with hygrometer for measuring room temperature and humidity in laboratories, homes, and businesses. The thermometer measures temperature from -50 to 70 degrees C (-58 to 158 degrees F), with an accuracy of = or - 1 degree C. The hygrometer measures humidity from 25 to 95% relative humidity, with an accuracy of + or - 3% mid-range and + or - 5% elsewhere. The unit has a built-in stand for setting up on a tabletop or wall mounted. This thermometer is traceable to National Institute of Standards and Technology, indicating that it is calibrated to International Organization for Standardization (ISO) 17025 levels. The Thomas traceable hygrometer/thermometer measures air temperature and humidity in classrooms, laboratories, and other rooms.
|Power supply||(1) AA battery|
|Temperature range||-50 to 70 C (-58 to 158 F)|
|Accuracy||+ or - 1 degree C|
|Resolution||0.1 degree C/0.1 degree F|
|Humidity range||25 to 95% RH|
|Humidity accuracy||+ or - 3% mid-range, + or - 5% outside|
|Standard met||International Organization for Standardization (ISO) 17025|
|Dimensions (H x W x D)||3.5 x 5 x 0.875 inches|
H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.
Digital thermometers are instruments used to measure the temperature of air, liquids, or surfaces electronically. They may measure temperature in Celsius, Fahrenheit, or both. Most digital thermometers use thermistors, which are small electronic resistors. Thermistors are made out of metals that conduct electricity within a certain range and become more conductive the warmer they get. A microcontroller inside the thermometer measures this electrical conductivity and converts it to a temperature, which is displayed on an LCD. Digital thermometers are used in a wide range of applications, including in laboratory settings, food service and storage, and in doctors' offices and hospitals.
Thomas Scientific manufactures lab supplies, equipment, chemicals, and instruments for scientific research. It is a registered contractor for the United States Federal Government. The company was founded in 1899 and is headquartered in Philadelphia, PA.