Thomas 4187 Traceable Humidity and Temperature Meter with Output, -4 to 140 Degree F, -20 to 60 degree C, + or - 1 Degree C Accuracy, 10 to 95% RH range

The Thomas 4187 Traceable humidity and temperature meter is used for measuring temperature and humidity in clean rooms, food processing, scientific laboratories, and humidity-sensitive manufacturing processes. The thermometer measures temperature from -20 to 60 degrees C (-4 to 140 degrees F), with an accuracy of + or - 1 degree C. The unit measures relative humidity from 10 to 95T, with an accuracy of + or - 2.5% mid-range and 5% outside it. The user can manually log up to 99 temperature or humidity readings. The readings stay in memory until they are deleted by the user. The thermometer is traceable to National Institute of Standards and Technology standards, indicating that it is calibrated to International Organization for Standardization (ISO) 17025 levels. The Thomas 4187 is used to monitor temperature and humidity in scientific laboratories, food processing, and manufacturing.SpecificationsTemperature range-20 to 60 degrees C (-4 to 140 degrees F)Temperature accuracy+ or - 1 degree CTemperature resolution0.1 degree C/0.1 degree FHumidity accuracy+ or - 2.5% mid-range; + or -5% outsideStandards metInternational Organization for Standardization (ISO) 17025Weight2.5oz.Dimensions (H x W x D)10.5 x 2.5 x 1 inchesH 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.What’s in the Box?Thomas Temperature and Humidity Thermometer9V batteryHard carrying caseTraceable certificateInstructions

• Dual-range thermometer with humidity meter for monitoring conditions in clean rooms, food processing, scientific laboratories, and humidity-sensitive manufacturing processes
• Measures temperature from -20 to 60 degrees C (-4 to 140 degrees F), with an accuracy of + or - 1 degree C
• Measures relative humidity from 10 to 95%, with an accuracy of + or - 2.5% mid-range
• Manual logging of up to 99 temperature or humidity readings
• Calibrated to ISO 17025 traceability standards for reliability of measurements