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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Dual display of temperature and humidity. - Select between different temperature scales (°C / °F). - Simultaneously hold both temperature and humidity readings. - Simultaneously hold both Maximum and Minimum and Average readings (MAX/MIN/AVG) with time marks. - Relative subtraction value (REL) function. - Alarm alert (SET) function. - Auto-power off. - DEW-POINT and WET-BULB temperature measurement. - Stores up to 200 readings Listing Details Application The Temperature /Humidity Meter has a highly accurate sensor chip to measure relative humidity and temperature. It is perfect for many industrial applications, laboratory and other types of work locations. Specification -          Display: Dual LCD display. The maximum value on the primary display is 1999. The maximum value on secondary display is 9999. -          Low Battery Indicator: When the LCD displayssymbol, please replace the battery. -          Sampling Rate: 1 sample per second. -          Power Supply: One 9V battery, NEDA...

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.      

The accurate TST0189/190 alarm hygrometer reliably indicates when humidity and temperature limits have been exceeded, for example in garden centres, warehouses, cleanrooms, museums, laboratories etc. All the benefits of TST0189 High accuracy ±2 %RH (TST0190) TST0190 with LED alarm, warns if limits are exceeded Storage temperature -40 to +70 °C Operating temperature -10 to +70 °C Battery type 9V block battery Battery life 8736 h Weight 168 g Material/Housing ABS   Probe type NTC Meas. range -10 to +70 °C Resolution 0.1 °C Probe type humid. sensor, cap. Meas. Range +2 to +98 %RH Resolution 0.1 %RH

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.

Feature: -Provide temperature and humidity display with Dry,Wet,Comfort Indication -Monitor Max,Min temp./humidity reading -With water-proof external outdoor temperature sensor

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  

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...

Therma-Hygrometer simultaneously displays both the humidity and temperature in addition toindicating and recording the maximum and minimum readings. It includes colour-coded zones fordry, comfort and wet, making it very easy to read.The instrument measures temperature over the range of 0 to 50 °C and humidity over the range of10 to 99 %rh.This therma-hygrometer is ideal for monitoring both temperature and humidity in rooms, offices,factories and similar to ensure optimum working conditions are maintained.The unit is housed in an ABS case, measuring 20 x 100 x 110 mm, that incorporates a usefulfoldaway stand and a keyhole slot for hanging on a wall.*Without external sensorspecification temperature humidityrange 0 to 50 °C 10 to 99%rhresolution 0.1°C /°F 1%rhaccuracy ±1°C ±5%rhbattery 2 x 1.5 volt AAAbattery life 10000 hoursdisplay dual custom LCDdimensions 20 x 100 x 110mmweight 150 grams