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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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.

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  

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 storage Belt case, wrist strap and calibration protocol included Backlit display Air moisture and air temperature Storage temperature -40 to +70 °C Operating temperature -10 to +50 °C Battery type 2 batteries Type AAA Battery life 200 h Weight 90 g Dimensions 119 x 46 x 25 mm Probe type NTC Meas. range -10 to +50 °C Accuracy ±0.5 °C Resolution 0.1 °C Probe type humid. sensor, cap. Meas. Range 0 to 100 %RH Accuracy ±2.5 %RH (5 to 95 %RH) Resolution 0.1 %RH

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. --> 45% R.H. < =5min Temperature 1 ℃ /2 sec Accessories Carrying case, Instruction manual, Battery. Auxiliary outputs Humidity 10mV DC/1% R.H. Temperature 10mV DC/1 o C, 10mV DC/1 o F Operating / Storage Condition 0 ℃ to 50 ℃< 80% R.H. -10 ℃ to 60 ℃< 70% R.H. Power Source 10mV DC/1 ℃ , 10mV DC/1 ℉ Size 270mm(L)x68mm(W)x25mm(H) Weight 200g Accessories Instruction Manual, Battery and Carrying Case    

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.

* Triple LCD Display for RH% Humidity, T1 for Air Temperature and T2 Type K Thermometer (-200 ℃ ~ 1333 ℃ ). * Dew Point Reading. * Max / Min / Data Hold. * Real Time Stamp. * Periodically Print out from Pre-Set time Interval. Measuring Range T1 : Temperature : - 20 ℃ ~ 60 ℃ (- 4 ℉ ~ 140 ℉ ) Humidity : 10%RH ~ 95%RH T2 : Type K : - 200 ~ 1333 ℃ (- 58 ~ 2431 ℉ ) Resolution 0.1 ℃ /0.1 ℉ /0.1%RH Accuracy T1 : Temperature : +/- 0.8 ℃ , +/- 1.5 ℉ Humidity : +/- 3%RH (at 25 o C, 30….95%RH) T2 : Type K : - 50 ℃ ~ 500 ℃ , +/- (0.1%rdg + 0.8 ℃ ) 500 ℃ ~ 1333 ℃ , +/- (0.2%rdg + 1.8 ℃ ) Input Protection 60V DC or 24 Vrms AC maximum input voltage on any Combination of input Connector. Sampling Rate 1 time/sec Operating Conditions 0 ℃ ~ 40 ℃ (32 o F ~ 104 ℉ ) 10 ~ 80% R.H. Power Source 6 pcs size AAA Alkaline Battery or 9V DC adaptor/500mA minimum. Battery Life Approx. 30 hours. ( interval printing = 60 minute, not including beeper). 70 hours ( except printing & beeper). Size 193(L) x 74(W) x 37(H)mm Weight Approx. 385g Accessories 1. Carrying case, Instruction manual,...