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 General Tools A600FC Thermo-Hygrometer, 30/250F 0/100%RH/
- Aluminum case
- Flange mounting
- Measures temperature and humidity
- Fahrenheit scale
Cole-Parmer Traceable Digital Thermohygrometer with Dew Point, Wet-Bulb, and Calibration
This thermohygrometer monitors temperature, humidity, dew-point, and wet-bulb. Displays current conditions along with minimum, and maximum readings. Settable high/low alarm for all four readings (dew-point, wet-bulb, humidity, temperature) may be set in 0.1 increments, and will sound for one minute and red LED will flash until readings return to non-alarm condition. Traceable Products have an individually-numbered Traceable Certificate provided with each unit, that assures accuracy from our ISO/IEC 17025:2017(1750.01) calibration laboratory accredited by A2LA. It indicates traceability of measurements to the SI units through NIST or other recognized national measurement institutes (NMI) that are signatories to the CIPM Mutual Recognition Agreement. Each product goes through an intense vetting process before it can carry the Traceable name, thus saving you both time and money by not having to calibrate separately.
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.
Research Products International Corp Temperature and Humidity Monitor, Supplied with Battery, 4 1/4 x 3 3/4 x 7/8 Inches
View both temperature and humidity readings even from across a room with this extra large display. Convenient for use in labs, storage areas, incubators, refrigerators or fume hoods. Features automatic recall of min/max readings and manual recall.
Supplied with AAA battery that will last up to one year.
Cole-Parmer Extech 445715 Big Digit Thermohygrometer with 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.
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 Thermohygrometer with Minimum/Maximum Function and Calibration
Thermohygrometer with minimum/ maximum function
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.