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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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Datalogging humidity meters (Recorder)

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lut0041-ht305-portable-temperature-and-humidity-meter

LUT0041-HT305 Portable Temperature and Humidity Meter

Category: Portable humidity meters

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.

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CEN0024-618 Datalogging Thermo-Hygrometer(Datalogger/PC Interface) with dew point

Category: Portable humidity meters

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 23°C) <Probe: RP-32> <10%RH, >90%RH ±4.0%RH 10%RH to 90%RH ±2.0%RH -20 to 60°C (-4 to 140°F) ±0.8°C (±1.5°F) <Probe: RP-31> <10%RH, >90%RH ±5.0%RH 10%RH to 90%RH ±3.0%RH 15 to 35°C (60 to 95°F) ±0.8°C (±1.5°F) <15°C (60°F), >35°C (95°F) Refer to chart   Response time: (@ t90; in slowly moving air) ; Humidity: 60 sec. ; Temperature: 10 sec. Sensor hysteresis: <1.5%RH Temperature coefficient: 0.1 x (specified accuracy) per 1°C (<23°C or >23°C) Sample rate: 2 times per second Battery type: 9V Battery Battery...

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ten880dtm-188d-heat-stress-wbgt-meter-with-temp-rh-dewe-point

TEN880D-TM-188D HEAT STRESS WBGT METER WITH TEMP/RH/DEW POINT

Category: Portable humidity meters

- 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 records, USB PC serial interface (TM-188D). - Sampling interval: Max 24 hours; Min 1 Second (TM-188D).

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tst0014-testo-175-h1-replaced-175-h2-complete-rh-temp-logger-set-w-display-software

TST0014-TESTO 175-H1(REPLACED 175-H2) COMPLETE RH /TEMP LOGGER SET W DISPLAY,SOFTWARE(GERMANY)

Category: Datalogging humidity meters (Recorder)

P/N            : 0572.1754    Measuring Range    : 0 to 100%RH(humidity)                : -20 to +55 deg. C.(temp)                                           : -40 to 50 deg.C(td)(dew point            Resolution        : 0.1%RH / 0.1 deg. C.Accuracy        : +/- 0.4 Deg. C.                : +/- 2%RH    Channels        : 2 channels Meas. cycle        : 10s to 24hrs(Selectable)    Memory Capacity    : 1 million measured values, continuous...

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lut0221-mtm-381sd-desktop-temp-humidity-datalogger-sd-card-type

LUT0221 MTM-381SD DESKTOP TEMP./HUMIDITY DATALOGGER (SD CARD TYPE)

Category: Datalogging humidity meters (Recorder)

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. • Microcomputer circuit, high accuracy. • RS232/USB PC COMPUTER interface.      

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lut0176-ht-3007sd-thermo-hygrometer-with-sd-card-slot

LUT0176 HT-3007SD THERMO-HYGROMETER WITH SD CARD SLOT

Category: Datalogging humidity meters (Recorder)

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. • Microcomputer circuit, high accuracy. • RS232/USB PC COMPUTER interface.

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