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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    Storage temperature -30 to +70 °C Operating temperature -20 to +50 °C Battery type Alkali manganese, mignon, Type AA Battery life 200 h Weight 428 g Dimensions 220 x 74 x 46 mm Material/Housing ABS/TPE/Metal Probe - Typ T (Cu-CuNi) Meas. range -200 to +400 °C Accuracy ±0.3 °C (-60 to +60 °C) ±0.5% of mv (remaining range) Resolution 0.1 °C Probe - NTC Meas. range -40 to +150 °C Accuracy ±0.2 °C (-25 to +74.9 °C) ±0.4 °C (-40 to -25.1 °C) ±0.4 °C (+75 to +99.9 °C) ±0.5% of mv (remaining range) Resolution 0.1 °C Probe type Type K Meas. Range -200 to +1370 °C Accuracy ±0.3 °C (-60 to +60 °C) ±(0.2 °C + 0.3% of mv) (remaining range) Resolution 0.1 °C Probe type Absolute pressure probe Meas. Range 0 to 2000 hPa Resolution 0.1 hPa Probe type humid. sensor, cap. Meas. Range 0 to +100 %RH Resolution 0.1 %RH

Hanging and standing bracket allows felxible positioning on a wall or desktop Analysis of past temperature and humidity values directly on site without evaluation on a PC All important values at a glance: current and past temperature and humidity values as well as date and time

Precise measurement of temperature, humidity and pressure All important values at a glance: current measurement values as well as date and time Calibration and adjustment of the measuring instrument possible on site with the optional calibration and adjustment software Adjustable calibration reminder function

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

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/temperature instrument, incl. plug-in humidity probe head, battery and calibration document Displays temperature and relative humidity / wet bulb temperature / dewpoint Max./min. values Hold button to freeze readings Display light

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

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...