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  1. Home /
  2. Instruments which measure Relative Humidity (RH)
Instruments which measure Relative Humidity (RH) - ExtremeMeters.com

Instruments which measure Relative Humidity (RH)

A dimensionless ratio, expressed in percent, of the amount of atmospheric moisture present relative to the amount that would be present if the air were saturated. Since the latter amount is dependent on temperature, relative humidity is a function of both moisture content and temperature. As such, relative humidity by itself does not directly indicate the actual amount of atmospheric moisture present. See dew point.

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  • Kestrel 3000 Pocket Weather Meter - ExtremeMeters.com

    Kestrel 3000 Pocket Weather Meter with Heat Stress Index

    Stay safe & let the 3000 do your heat stress calculations for you.

    4.95 / 5.0

    (40) 40 total reviews

    Regular price €151,95 EUR
    Sale price €151,95 EUR Regular price
    Unit price /  per 

    Sale! 98% claimed

  • Kestrel 3500 Pocket Weather Meter - ExtremeMeters.com

    Kestrel 3500 Pocket Weather Meter

    Split-second decisions require no guesswork; get conditions quickly.

    4.96 / 5.0

    (27) 27 total reviews

    Regular price €177,95 EUR
    Sale price €177,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel 3500DT Pocket Delta-T Crop Spraying Weather Meter - ExtremeMeters.com

    Kestrel 3500DT Pocket Delta-T Crop Spraying Weather Meter

    Maximize safety and minimize waste with Kestrel 3500 Delta T.

    5.0 / 5.0

    (3) 3 total reviews

    Regular price €185,95 EUR
    Sale price €185,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel 3500FW Pocket Fire Weather Meter - ExtremeMeters.com

    Kestrel 3500FW Pocket Fire Weather Meter

    Measure weather conditions quickly with the firefighters trusted tool.

    5.0 / 5.0

    (4) 4 total reviews

    Regular price €185,95 EUR
    Sale price €185,95 EUR Regular price
    Unit price /  per 

    Sale! 97% claimed

  • Kestrel 3500NV Pocket Weather Meter with NV Backlight - ExtremeMeters.com

    Kestrel 3500NV Pocket Weather Meter with NV Backlight

    Measure wind speed, temp, RH, dew point & wet bulb with the 3500NV

    4.5 / 5.0

    (2) 2 total reviews

    Regular price €185,95 EUR
    Sale price €185,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel 3550AG Pocket Delta T Crop Spraying Weather Meter - ExtremeMeters.com

    Kestrel 3550AG Pocket Delta T Crop Spraying Weather Meter

    Avoid spray drift with this portable, connected handheld weather meter

    5.0 / 5.0

    (4) 4 total reviews

    Regular price €202,95 EUR
    Sale price €202,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel 3550FW Pocket Fire Weather Meter with Bluetooth

    Kestrel 3550FW Pocket Fire Weather Meter with Bluetooth

    Send detailed environmental info with GPS location by text or email.

    5.0 / 5.0

    (4) 4 total reviews

    Regular price €202,95 EUR
    Sale price €202,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel 5000 Environmental Weather Meter - ExtremeMeters.com

    Kestrel 5000 Environmental Weather Meter

    Meet the Kestrel 5000, the future of environmental monitoring.

    4.91 / 5.0

    (11) 11 total reviews

    Regular price From €253,95 EUR
    Sale price From €253,95 EUR Regular price
    Unit price /  per 

    Sale! 98% claimed

  • Kestrel 5000AG Livestock Environmental Meter - ExtremeMeters.com

    Kestrel 5000AG Agriculture Environmental Meter

    A must-have tool for anyone involved with livestock production.

    5.0 / 5.0

    (1) 1 total reviews

    Regular price From €261,95 EUR
    Sale price From €261,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel 5100 Racing Weather Meter - ExtremeMeters.com

    Kestrel 5100 Racing Weather Meter

    Make those last-minute dial-in or tuning decisions count.

    4.56 / 5.0

    (9) 9 total reviews

    Regular price From €261,95 EUR
    Sale price From €261,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel 5200 Concrete Pro Jobsite Weather Kit

    Kestrel 5200 Concrete Pro Jobsite Weather Kit

    Prevent costly plastic shrinkage cracking with this portable kit.

    Regular price From €414,95 EUR
    Sale price From €414,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel 5200 Professional Environmental Meter - ExtremeMeters.com

    Kestrel 5200 Professional Environmental Meter

    Take the calculations and guesswork out of your job.

    5.0 / 5.0

    (5) 5 total reviews

    Regular price From €261,95 EUR
    Sale price From €261,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel 5400AG Livestock Heat Stress Tracker with LiNK + Vane Mount - ExtremeMeters.com

    Kestrel 5400AG Livestock Heat Stress Tracker with LiNK + Vane Mount

    Don't let cattle heat stress reduce your herd performance.

    5.0 / 5.0

    (2) 2 total reviews

    Regular price €550,95 EUR
    Sale price €550,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel 5400FW Fire Weather Meter Pro - ExtremeMeters.com

    Kestrel 5400FW Fire Weather Meter Pro

    Your complete Handheld Fire Weather Station and WBGT Heat Safety Meter

    5.0 / 5.0

    (2) 2 total reviews

    Regular price €550,95 EUR
    Sale price €550,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel 5500 Weather Meter - ExtremeMeters.com

    Kestrel 5500 Pocket Weather Meter / Station

    The world's most complete weather meter and portable Weather Station.

    4.8 / 5.0

    (46) 46 total reviews

    Regular price From €321,95 EUR
    Sale price From €321,95 EUR Regular price
    Unit price /  per 

    Sale! 95% claimed

  • Kestrel 5500AG Agriculture Weather Meter - ExtremeMeters.com

    Kestrel 5500AG Agriculture Weather Meter

    Get the environmental data you need for livestock and crop production.

    Regular price From €329,95 EUR
    Sale price From €329,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel 5500FW Fire Weather Meter Pro - ExtremeMeters.com

    Kestrel 5500FW Fire Weather Meter Pro

    The all-in-one hand-held belt weather kit replacement.

    5.0 / 5.0

    (4) 4 total reviews

    Regular price From €329,95 EUR
    Sale price From €329,95 EUR Regular price
    Unit price /  per 

    Sale! 98% claimed

  • Kestrel Weather Meter Tan / Free Case Special (Included) Kestrel 5700 ELITE Applied Ballistics Weather Meter with Bluetooth LiNK | Desert Tan

    Kestrel 5700 ELITE AB Weather Meter with Bluetooth LiNK

    Regular price €651,95 EUR
    Sale price €651,95 EUR Regular price
    Unit price /  per 

    Sale! 72% claimed

  • Kestrel 7000 RH Environmental Meter. Made in the USA

    Kestrel 7000 Environmental Meter

    Boasting a field-swappable RH sensor for easy sensor replacement.

    Regular price €295,95 EUR
    Sale price €295,95 EUR Regular price
    Unit price /  per 

    Sale! 99% claimed

  • Kestrel DROP D2 Bluetooth Data Logger - Temperature | Humidity - ExtremeMeters.com

    Kestrel DROP D2 Bluetooth Data Logger - Temperature | Humidity

    The Kestrel DROP is a highly durable environmental data logger.

    5.0 / 5.0

    (7) 7 total reviews

    Regular price €92,95 EUR
    Sale price €92,95 EUR Regular price
    Unit price /  per 
  • Kestrel DROP D2AG Livestock Heat Stress Monitor - ExtremeMeters.com

    Kestrel DROP D2AG Livestock Heat Stress Monitor

    Stay informed of heat conditions in the barn or during transport.

    Regular price €92,95 EUR
    Sale price €92,95 EUR Regular price
    Unit price /  per 
  • Kestrel DROP D2HS Heat Stress Monitor - ExtremeMeters.com

    Kestrel DROP D2HS Heat Stress Monitor

    Know your temperature and humidity conditions anywhere.

    Regular price €92,95 EUR
    Sale price €92,95 EUR Regular price
    Unit price /  per 
  • Kestrel DROP D3 Ballistics Bluetooth Data Logger - Temperature | Humidity | Pressure - ExtremeMeters.com

    Kestrel DROP D3 Bluetooth Ballistics Data Logger - Temperature | Humidity | Pressure

    5.0 / 5.0

    (2) 2 total reviews

    Regular price €117,95 EUR
    Sale price €117,95 EUR Regular price
    Unit price /  per 
  • Kestrel DROP D3 Bluetooth Data Logger - Temperature | Humidity | Pressure - ExtremeMeters.com

    Kestrel DROP D3 Bluetooth Data Logger - Temperature | Humidity | Pressure

    4.5 / 5.0

    (8) 8 total reviews

    Regular price €117,95 EUR
    Sale price €117,95 EUR Regular price
    Unit price /  per 
  • Kestrel DROP D3FW Fire Weather Monitor - ExtremeMeters.com

    Kestrel DROP D3FW Fire Weather Monitor

    Track weather conditions and record trends at a burn site

    Regular price €117,95 EUR
    Sale price €117,95 EUR Regular price
    Unit price /  per 


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