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).
Fisherbrand TraceableGO™ Bluetooth Datalogging Hygrometer fills in the unknowns between destinations
Battery-operated, wall-mounted unit has 9.75 in. dial
Ideal for monitoring RH in labs and plants
Designed for cleanrooms, hoods, process control, and air monitoring.
Ideal for monitoring conditions in chambers, cleanrooms, food processing facilities, scientific laboratories, and other humidity-sensitive areas
Retains highest and lowest readings recorded over selected period
This digital temperature and humidity meter continuously monitors and displays readings graphically and numerically.
Provides permanent hard copy results
|Includes||Humidity/T1 and T2 probes and cables, probe holder, paper, carrying case, six AAA batteries and traceable certificate|
|Certifications/Compliance||ISO 17025, A2LA, NIST|
Monitor air conditions in environmental chambers, chemical storage areas, cleanrooms, incubators and stockrooms
|Memory||Stores and recalls minimum/ maximum temperature and humidity readings, display up-dated every second|
|Humidity Range||25 to 95%|
|For Use With (Application)||Monitor air conditions in environmental chambers, chemical storage areas, cleanrooms, incubators and stockrooms|
|Includes||Bench stand, switch to +read °F/°C, fast-response solid-state sensors and two AAA batteries|
|Accuracy||±2 to ±4%|
|Temperature Range (English)||32°F to 122°F|
|Weight (English)||2.5 oz.|
|Certifications/Compliance||ISO 17025, A2LA, NIST|
|Temperature Range (Metric)||0°C to 50°C|
Measures ambient temperature, relative humidity and tells time.
Allows users to view time, temperature and humidity from anywhere in the lab
Monitors round-the-clock for critical experimental requirements.
|Accuracy||Humidity Accuracy: ±3% midrange, ±5% otherwise|
|Type||Remote Alarm Rh/Temperature Monitor|
|Temperature Range (English)||32°F to 140°F|
|Humidity Range||5 to 95%|
|Temperature Range (Metric)||0°C to 60°C|
|Resolution||Humidity Res: 0.1°|
This digital and water-resistant thermometer provides results in two seconds
|Accuracy||±0.5°C from -20°C to 200°C, ±1°C otherwise|
|Temperature Range (English)||-58°F to +482°F|
|Weight (English)||2 lb.|
|For Use With (Application)||Temperature Monitoring|
|Weight (Metric)||0.907 kg|
For placement inside the glove box main chamber to continuously monitor moisture levels
|For Use With (Application)||For placement inside the glove box main chamber to continuously monitor moisture levels|
Measures both percent relative humidity and temperature in °F or °C. Sensing probe wand allows for more ergonomic probing of hard to reach sampling areas.
Compact, lightweight design for accurate measurements anywhere!
For measurement of temperature and humidity
|Accuracy||2°C, 4% RH|
|Humidity Range||0 to 100%|
Designed with waterproof temperature probe
|Length (Metric) Probe||3 cm|
|Includes||Supplied with multi language (English, French, German, Italian, Portuguese and Spanish) instructions and statement of traceability indicating accuracy traceable to NIST and DAkkS|
|Length (Metric) Cable||3 m|
|Dimensions (LxWxH)||1.2 x 2.5 x 3.7 in. (30 x 6.5 x 9.7 cm)|
|Temperature Range (English)||-58°F to +158°F|
|Length (English) Cable||9.8 ft.|
|Length (English) Probe||1.2 in.|
|Temperature Range (Metric)||-50°C to +70°C|
Digi-Sense™ Precalibrated Thermohygrometers are Ideal for use in the HVAC, IAQ, and environmental industries
|Electrical Requirements||AAA Battery (3)|
|Display Type||LCD (Backlit)|
|Dimensions (LxWxH)||7.25 x 2.5 x 1 in.|
|Humidity Range||0 to 100% rh|
|For Use With (Application)||HVAC, IAQ, Lab, Cleanroom, Warehouse, Factories, Storage areas|
Temperature and humidity both can be displayed simultaneously