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Humidity meters (Hygrometers)

Humidity is the amount of water vapor in the air. Water vapor is the gas phase of water and is invisible.^[1] Humidity indicates the likelihood of precipitation, dew, or fog. Higher humidity reduces the effectiveness of sweating in cooling the body by reducing the rate of evaporation of moisture from the skin. This effect is calculated in a heat index table, used during summer weather.

There are three main measurements of humidity: absolute, relative and specific. Absolute humidity is the water content of air.^[2] Relative humidity, expressed as a percent, measures the current absolute humidity relative to the maximum for that temperature. Specific humidity is a ratio of the water vapor content of the mixture to the total air content on a mass basis.

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Name	Description	Category
LUT0042 - HUMIDITY METER WITH TEMPERATURE (ATTACHED PROBE)	POCKET HUMIDITY METER, economical type * Measurement : Humidity, Temp., Dew point * Pocket and compact housing case. * Fast response time. * Humidity : 10 to 95 %RH , Temp. : 0 to 50 oC. * Resolution : 0.1 %RH, 0.1 degree. * DC 9V battery (006P). * Separate probe. * Size : 135 x 60 x 33 mm.	Portable humidity meters
TES0050 - 1360 Humidity/Temperature Meter	Laboratory Quality Control Air-Conditioning Process Engineering Range: Humidity 10% to 95% R.H. Temperature -20 ℃ to +60 ℃ ; -4 o F to +140 ℉ Resolution 0.1% R.H. 0.1 ℃ , 0.1 ℉ Accuracy (after calibration) Humidity +/ - 3% R.H. (at 25 ℃ , 30...95% R.H.) Temperature +/ - 0.8 ℃ , +/ - 1.5 ℉ Response time Humidity 45% R.H. --> 95% R.H. < = 3min 95% R.H. -->...	Portable humidity meters
TST0102-610 Humidity and temperature measuring instrument	Humidity and temperature measuring instrument incl. protective cap, batteries and calibration protocol TST0102 measures relative air moisture and temperature simultaneously. Dew point calculation and wet bulb as well as Hold function and max./min. display are possible with this instrument. Long-term stable Testo humidity sensor +/-2.5 %RH accuracy Incl. calibration protocol Dewpoint calculation and wet bulb included Hold function and max./min. values Protective cap for safe...	Portable humidity meters
TST0103-625 COMPLETE HUMIDITY/TEMPERATURE MEASURING INSTRUMENT COMPLETE WITH CONNECTION CABLE	Displays temperature and relative humidity / wet bulb temperature / dewpoint Max./min. values Hold button to freeze readings Display light Auto Off function TopSafe, the indestructible protection case (optional) Patented humidity sensor 2 year guaranteed long-term stability TopSafe, instrument protection against dirt and knocks (optional) Go for TST0191 if you do not need a cable	Portable humidity meters
LUT0041-HT305 Portable Temperature and Humidity Meter	POCKET HUMIDITY METER, economical type * Measurement : Humidity, Temp., Dew point * Pocket and compact housing case. * Fast response time. * Humidity : 10 to 95 %RH , Temp. : 0 to 50 oC. * Resolution : 0.1 %RH, 0.1 degree. * DC 9V battery (006P). * Separate probe. * Size : 135 x 60 x 33 mm.	Portable humidity meters
CEN0024-618 Datalogging Thermo-Hygrometer(Datalogger/PC Interface) with dew point	Interchangeable digital probes Thermistor sensor for temperature measurement, fast response time Dual display Dew point measurement 16,000 Records Data Logger PC Interface With Windows software Auto power off for battery saving Sensor type: Electronic capacitance polymer film sensor / NTC Relative humidity range: 0 to 100%RH Temperature range: -20 to 60°C (- 4 to 140°F) Dew point temperature range: -20 to 60°C (- 4 to 140°F) Resolution: 0.1%RH, 0.1°C, 0.1°F Accuracy: (at...	Portable humidity meters
TEN880D-TM-188D HEAT STRESS WBGT METER WITH TEMP/RH/DEW POINT	- Dataloggin, Quick-response capacitance sensor, accurate measurement for wet bulb globe temperature(WBGT), black globe temperature(TG), humidity(%RH), air temperature(TA), wet bulb(WET) and dew point(DEW). - Max/Min and data hold. - Low battery indication. - LCD display with LED backlight. - Viewing data records. - Switch the temperature unit to ℃ or ℉. - Brass black ball in 50mm diameter. - WBGT alarm setting. - Auto power off with disable function. - Data logging capacity: 12000...	Portable humidity meters
TST0014-TESTO 175-H1(REPLACED 175-H2) COMPLETE RH /TEMP LOGGER SET W DISPLAY,SOFTWARE(GERMANY)	P/N : 0572.1754 Measuring Range : 0 to 100%RH(humidity) : -20 to +55 deg....	Datalogging humidity meters (Recorder)
LUT0221 MTM-381SD DESKTOP TEMP./HUMIDITY DATALOGGER (SD CARD TYPE)	Range - Humidity : 5 % to 95 % R.H. - Temperature : 0 ℃ to 50 ℃ - Range : -25.3 ℃ to 48.9 ℃ • Dimension : 177 x 68 x 45 mm • Weight : 489 g/1.08 LB. FEATURES : • Humidity/Temp., Dew point ( Humidity ), Wet bulb ( Humidity ), Type K/J thermometer, 4 kinds measurement are combined into one meter, intelligent and professional. • Type K, Type J thermocouple thermometer. • Fast humidity measuring response time. • Data hold, record max. and min. reading. •...	Datalogging humidity meters (Recorder)
LUT0176 HT-3007SD THERMO-HYGROMETER WITH SD CARD SLOT	Range - Humidity : 5 % to 95 % R.H. - Temperature : 0 ℃ to 50 ℃ - Range : -25.3 ℃ to 48.9 ℃ • Dimension : 177 x 68 x 45 mm • Weight : 489 g/1.08 LB. FEATURES : • Humidity/Temp., Dew point ( Humidity ), Wet bulb ( Humidity ), Type K/J thermometer, 4 kinds measurement are combined into one meter, intelligent and professional. • Type K, Type J thermocouple thermometer. • Fast humidity measuring response time. • Data hold, record max. and min. reading. •...	Datalogging humidity meters (Recorder)