Hygrometers
Instruments that measure moisture in ambient air; types include indicator papers and dial-styles; electronic versions may be analog or digital; may be traceable to NIST. Because humidity is affected by temperature, most hygrometers include thermometers to correct readings.
Hygrometers, or humidity meters, are devices for measuring the level of water vapor (also known as relative humidity, RH) in the atmosphere or in other gases.
How Are Hygrometers Used?
• Monitoring moisture levels in laboratory incubators, growth chambers, greenhouses, and controlled climate cabinets
• Measuring humidity in confined spaces, rooms, or buildings where moisture levels are critical to the activity being performed or to the objects or materials being stored
• Measuring humidity in domestic or residential settings
• Meteorological and climate monitoring
Classical, mechanical hygrometers, which are less widely used today, include wet/dry bulb hygrometers or psychrometers and hair tension hygrometers, which rely upon a single (hygroscopic) hair or fiber.
Most hygrometers available on the market today are electronic digital instruments, which measure humidity using capacitive or resistive sensors. These digital devices offer clear displays with reliable and consistent performance, and are typically compact, hand-held, or benchtop units with a minimal footprint. They may also be available with temperature, timer and alarm functionality, and with externally corded probes and wireless radio-signal connectivity for remote monitoring and data logging. Many operate over a wide temperature range of -5° to +50°C, with a typical measurement range of 0 to 95% relative humidity (RH).
Cole-Parmer Extech 445703 Big Digit Thermohygrometer
Designed to monitor relative humidity, and temperature. Features include a super large display, C/F switchable, Min/Max with reset function, low battery indication and a built-in stand for sitting on a desk and hardware for mounting on a wall.
Cole-Parmer Traceable Thermometer with Clock, Humidity Monitor, and Calibration
Unique unit simultaneously displays time-of-day, temperature, and humidity. Clock displays AM/PM or 24-hour military time to the exact minute with 0.01% accuracy. Noting changes is easy with triple display. Internal sensors make it ideal for use in hoods, storerooms, clean rooms, incubators, drying chambers, and environmental cabinets. Temperature range is 32.0 to 122.0F and 0.0 to 50.0C. Resolution is 0.1 and accuracy is 1C. Relative humidity range is 20 to 90%. Resolution is 1% RH and accuracy is 5% RH mid-range, otherwise 8%. At the touch of a button, memory recalls highest and lowest temperature and humidity readings.
Cole-Parmer Traceable Precision Monitoring Thermohygrometer with Calibration
Simultaneously display Min/Max and current temperature and humidity with 7-day graph. Includes NIST-Traceable certificate from our A2LA accredited (1750.01) calibration laboratory. Scroll through temperature and humidity data for the past seven days. Maintain data integrity-historical data cannot be cleared, only overwritten. Easily switch between F/C and 12/24-hour time formats.
Cole-Parmer General Tools A600FC Thermo-Hygrometer, 30/250F 0/100%RH/
- Aluminum case
- Flange mounting
- Measures temperature and humidity
- Fahrenheit scale
Thermco Products Inc HYGRO/THERMOMETER W/ALARM 1/EA
Thermo/Hygrometer with Hi-Low audible and visual alarm for all parameters. Temp -40� to 70�C ( -40� to 158�F). Dew Point Range: -40� to 70�C ( -40� to 158�F). Humidity Range: 0 to 99% RH. Min/max temperature and humidity memory recalling.
Cole-Parmer Traceable Monitoring Hygrometer, Simultaneously displays time-of-day, humidity and temperature
The Traceable® Monitoring Hygrometer is designed for professionals who require high-accuracy humidity and temperature monitoring in laboratory, industrial, and cleanroom environments. Customers can choose between NIST-traceable certification or A2LA-accredited calibration, ensuring compliance with ISO, GMP, and FDA standards.
Cole-Parmer Traceable Thermohygrometer with Minimum/Maximum Function and Calibration
Thermohygrometer with minimum/ maximum function
Cole-Parmer Extech 445815 Big Digit Thermohygrometer with Dew Point Point, Alarm and Remote Probe
Designed to monitor relative humidity, and temperature. Features include a super large display, C/F switchable, Min/Max with reset function, low battery indication and a built-in stand for sitting on a desk and hardware for mounting on a wall.
Cole-Parmer Extech 445814 Big Digit Thermohygrometer with Dew Point Point and Alarm
Designed to monitor relative humidity, and temperature. Features include a super large display, C/F switchable, Min/Max with reset function, low battery indication and a built-in stand for sitting on a desk and hardware for mounting on a wall.
Cole-Parmer Extech 445713 Big Digit Thermohygrometer with Remote Temperature Probe
Designed to monitor relative humidity, and temperature. Features include a super large display, C/F switchable, Min/Max with reset function, low battery indication and a built-in stand for sitting on a desk and hardware for mounting on a wall.
Cole-Parmer Extech RH101 Thermohygrometer and IR Thermometer
Thermohygrometer simultaneously displays humidity and probe temperature, or humidity and infrared temperature. Measure temperature and humidity in laboratories, cleanrooms and storage areas with the remote probe. For high temperature applications or measurements in hard-to-reach areas, use the infrared thermometer. View measurements in low light areas with backlit display. Meter features switchable °F/°C units, separate MAX and HOLD buttons for temp/humidity and infrared measurements, low battery and overrange indicators, and auto shutoff. What’s included: protective holster, built-in stand, probe and one 9V battery.