www.processsensing.com
Open in
urlscan Pro
92.205.89.188
Public Scan
Submitted URL: http://www.michell.com/us/calculator
Effective URL: https://www.processsensing.com/en-us/humidity-calculator/
Submission: On June 27 via manual from US — Scanned from FR
Effective URL: https://www.processsensing.com/en-us/humidity-calculator/
Submission: On June 27 via manual from US — Scanned from FR
Form analysis 2 forms found in the DOM
GET /en-us/search/
<form role="search" class="navbar-form navbar-left" method="get" action="/en-us/search/">
<div class="form-group my-auto">
<!--<input type="text" size="10" class="form-control" placeholder="Site Search" name="q" id="q">-->
<input type="text" placeholder="Search" name="q" id="q" required="">
<!--id="rd-navbar-search-input"-->
</div>
<button type="submit" class="fa-search" aria-label="Search"></button>
</form><form id="hcalc" class="pointer">
<!--
<div class="logo noselect">
<img src="w.png" height="50">
</div>
<div class="title noselect pointer">
<span style="font-size: 2em; height: 50%; display: inline-block;">Humidity Calculator</span>
<span style="font-size: 1em" id="version_tag">1.08</span>
</div>
-->
<div class="group">
<div class="box box_w" id="known">
<label> Known Parameter<a id="h-humidity-parameter" class="hlink" href="javascript:;">[?]</a>
<select name="humidity-parameter" id="humidity-parameter">
<option value="fp">Dew Point / Frost Point </option>
<option value="dp">Dew Point </option>
<option value="rh">Relative Humidity </option>
<option value="ppmv">ppmV </option>
<option value="ppmw">ppmW </option>
<option value="wvp">wvp </option>
<option value="abs">Absolute Humidity </option>
<option value="mr">Mixing Ratio </option>
<option value="wb">Wet Bulb </option>
<option value="en">Enthalpy </option>
<option value="wa">Water Activity </option>
</select>
</label>
<label> Known Value<a id="h-humidity-value" class="hlink" href="javascript:;">[?]</a>
<input name="humidity-value" id="humidity-value" class="in_v in_ok" type="text" value="10.0">
</label>
<label> Known Units<a id="h-humidity-unit" class="hlink" href="javascript:;">[?]</a>
<input name="humidity-unit-temp" id="humidity-unit-temp" class="in_ok" type="text" value=" °C" style="" disabled="disabled">
<select name="humidity-unit" id="humidity-unit" style="display: none;">
<option value="degC">°C </option>
<option value="degF">°F </option>
<option value="kelvin">K </option>
</select>
</label>
</div>
<div class="box box_w" id="pressure">
<label> Sample Pressure<a id="h-press" class="hlink" href="javascript:;">[?]</a>
<input name="press" id="press" class="in_v in_ok" type="text" value="101325">
</label>
<label> Pressure Units<a id="h-press-unit" class="hlink" href="javascript:;">[?]</a>
<select name="press-unit" id="press-unit">
<option value="Pa">Pa </option>
<option value="hPa">hPa </option>
<option value="kPa">kPa </option>
<option value="MPa">MPa </option>
<option value="atm">atm </option>
<option value="mbar">mbar </option>
<option value="bara">bara </option>
<option value="barg">barg </option>
<option value="psia">psia </option>
<option value="psig">psig </option>
<option value="inHg">inHg </option>
<option value="mmHg">mmHg </option>
<option value="torr">torr </option>
<option value="inH2O">inH2O </option>
<option value="mmH2O">mmH2O </option>
</select>
</label>
<label> Pressure Compensation<a id="h-apress" class="hlink" href="javascript:;">[?]</a>
<input name="apress" id="apress" class="in_v in_ok" type="text" value="[off]">
</label>
</div>
<div class="box box_w" id="temperature">
<label>
<span id="tdb-label">Sample Temperature</span><a id="h-temp" class="hlink" href="javascript:;">[?]</a>
<input name="temp" id="temp" class="in_v in_ok" type="text" value="21.0">
</label>
<label> Temperature Units<a id="h-temp-unit" class="hlink" href="javascript:;">[?]</a>
<select name="temp-unit" id="temp-unit" value="degC">
<option value="degC">°C </option>
<option value="degF">°F </option>
<option value="kelvin">K </option>
</select>
</label>
</div>
</div>
<div class="group">
<div id="results" class="box">
<label> Results <a id="crunits" href="javascript:;">[Settings]</a>
</label>
<div id="saturation_warning" style="display: none;">
<h1 id="saturation_title">Saturation Conditions</h1>
<img src="saturation.gif">
<div id="saturation_warning1" style="margin-left: 10px;">
<p>Calculated water vapour pressure higher than saturation vapour pressure.</p>
<p>Increase sample temperature or reduce input humidity.</p>
</div>
<div id="saturation_warning2">
<p>Calculated water vapour pressure higher than total pressure.</p>
<p>Increase sample pressure or reduce input humidity.</p>
</div>
<div id="saturation_warning3" style="margin-left: 10px;">
<p>Calculated water vapour or saturation vapour pressure is negative.</p>
<p>Input parameters out of range.</p>
</div>
</div>
<div id="sortable-column" class="left ui-sortable">
<div class="sortable-item" rsort-id="1" id="wvp-rgroup" style="display: block;">
<div class="sortable-handle"></div>
<div class="sortable-container"><span class="lresult">Water Vapour Pressure </span><span class="result" id="wvp" title="1228.133389508414">1228.1</span><span class="resultu" id="wvpu">Pa </span></div>
</div>
<div class="sortable-item" rsort-id="2" id="swvp-rgroup" style="display: block;">
<div class="sortable-handle"></div>
<div class="sortable-container"><span class="lresult">Saturation Vapour Pressure </span><span class="result" id="swvp" title="2488.155730961567">2488.2</span><span class="resultu" id="swvpu">Pa </span></div>
</div>
<div class="sortable-item" rsort-id="3" id="dp-rgroup" style="display: block;">
<div class="sortable-handle"></div>
<div class="sortable-container"><span class="lresult">Dew Point </span><span class="result" id="dp" title="10">10</span><span class="resultu" id="dpu">°C </span></div>
</div>
<div class="sortable-item" rsort-id="4" id="fp-rgroup" style="display: block;">
<div class="sortable-handle"></div>
<div class="sortable-container"><span class="lresult">Frost point </span><span class="result" id="fp" title="Frost point > 0°C not possible.">N/A</span><span class="resultu" id="fpu">°C </span></div>
</div>
<div class="sortable-item" rsort-id="5" id="rh-rgroup" style="display: block;">
<div class="sortable-handle"></div>
<div class="sortable-container"><span class="lresult">Relative Humidity </span><span class="result" id="rh" title="49.359184966842584">49.359</span><span class="resultu">% </span></div>
</div>
<div class="sortable-item" rsort-id="6" id="ppmv-rgroup" style="display: block;">
<div class="sortable-handle"></div>
<div class="sortable-container"><span class="lresult">Moisture (Volume) </span><span class="result" id="ppmv" title="12269.448895812768">12269</span><span class="resultu" id="ppmvu">ppm </span></div>
</div>
<div class="sortable-item" rsort-id="7" id="ppmw-rgroup" style="display: block;">
<div class="sortable-handle"></div>
<div class="sortable-container"><span class="lresult">Moisture (Weight) </span><span class="result" id="ppmw" title="7631.326530882902">7631.3</span><span class="resultu" id="ppmwu">ppm </span></div>
</div>
<div class="sortable-item" rsort-id="8" id="abs-rgroup" style="display: block;">
<div class="sortable-handle"></div>
<div class="sortable-container"><span class="lresult">Absolute Humidity </span><span class="result" id="abs" title="9.047645946166016">9.0476</span><span class="resultu" id="absu">g/m3 </span></div>
</div>
<div class="sortable-item" rsort-id="9" id="mr-rgroup" style="display: block;">
<div class="sortable-handle"></div>
<div class="sortable-container"><span class="lresult">Mixing Ratio </span><span class="result" id="mr" title="0.007631326530882903">0.0076313</span><span class="resultu" id="mru">kg/kg </span></div>
</div>
<div class="sortable-item" rsort-id="10" id="wb-rgroup" style="display: block;">
<div class="sortable-handle"></div>
<div class="sortable-container"><span class="lresult">Wet Bulb </span><span class="result" id="wb" title="14.572282620881253">14.572</span><span class="resultu" id="wbu">°C </span></div>
</div>
<div class="sortable-item" rsort-id="11" id="en-rgroup" style="display: block;">
<div class="sortable-handle"></div>
<div class="sortable-container"><span class="lresult">Enthalpy </span><span class="result" id="en" title="40.50201117198358">40.502</span><span class="resultu" id="enu">kJ/kg </span></div>
</div>
<div class="sortable-item" rsort-id="12" id="wa-rgroup" style="display: block;">
<div class="sortable-handle"></div>
<div class="sortable-container"><span class="lresult">Water Activity </span><span class="result" id="wa" title="0.49359184966842584">0.49359</span><span class="resultu"> </span></div>
</div>
</div>
</div>
<div class="box box_w gastype" id="gastype">
<label> Gas Type<a id="h-molw-type" class="hlink" href="javascript:;">[?]</a>
<select name="molw-type" id="molw-type">
<option value="air">Air </option>
<option value="o2">O2 </option>
<option value="n2">N2 </option>
<option value="h2">H2 </option>
<option value="co">CO </option>
<option value="co2">CO2 </option>
<option value="sf6">SF6 </option>
<option value="ar">Ar </option>
<option value="he">He </option>
<!-- <option value="ng">Natural Gas </option>-->
<option value="user">User </option>
</select>
</label>
<label> Mol. Weight<a id="h-molw" class="hlink" href="javascript:;">[?]</a>
<input name="molw" id="molw" class="in_v in_ok" type="text" value="28.9645">
</label>
</div>
</div>
<input type="button" value="Calculate" id="Calculate" class="COK">
<div class="group">
<div id="status" class="box">
<span id="status_exclamation">! </span><span id="status_text">Ready.</span>
</div>
</div>
</form>Text Content
This website uses cookies to ensure you get the best experience on our website.
Learn more
Got it!
* Brands
* Contact
* Blog
Change Language
Chinese (中文) French (Français) German (Deutsch) Italian (Italiano) Dutch (Dutch)
* Sensors
* CO2 Sensors
* Industrial Oxygen
* Industrial Safety
* Liquid Level
* Medical & Diving
* Products
* Dew Point and Moisture
* Humidity & Temperature
* Water Activity
* Oxygen
* Trace Impurities
* CO2 & Pressure
* H2, Binary, Toxic & Flammable Gases
* Temperature
* Refrigerant Gas
* Real-Time Monitoring Solutions
* Services
* Calibration
* Dew Point
* Relative Humidity
* On-site
* Engineering Services
* System Engineering Services
* Product Customization
* Project Planning
* GxP
* Lifecycle & Maintenance
* Easidew Transmitter Exchange
* Maintenance Agreements
* Servicable Parts for Hazardous Areas
* Field Engineering Services
* Rental Services
* Industries
* * Additive Manufacturing
* Compressed Air
* Combustion Efficiency
* Food & Beverage
* * Cryogenic Air Separation
* HVAC & Building Automation
* Hydrogen & Syngas
* Life Sciences & Pharma
* * Metallurgy
* Meteorology
* Medical
* Natural Gas
* * Petrochemical
* Power Generation
* Rail
* Semiconductor & Electronics
* * Transportation
* Battery Manufacture
* Resources
* PST Technologies
* Moisture Sensing
* Oxygen Sensing
* Gas Sensing
* Engineering tools
* Humidity Calculator
* Software downloads
* Chromatograms
* About
* About PST
* Contact us
* Careers
* Events
* News
* Blog
* Privacy Policy
* Change Language
* German
* English
* French
* Italian
* Chinese (中文)
PST HUMIDITY CALCULATOR
Recommended humidity calculator for all PST - Michell products.
Home ❘ Humidity Calculator
Known Parameter[?] Dew Point / Frost Point Dew Point Relative Humidity ppmV
ppmW wvp Absolute Humidity Mixing Ratio Wet Bulb Enthalpy Water Activity
Known Value[?] Known Units[?] °C °F K
Sample Pressure[?] Pressure Units[?] Pa hPa kPa MPa atm mbar bara barg
psia psig inHg mmHg torr inH2O mmH2O Pressure Compensation[?]
Sample Temperature[?] Temperature Units[?] °C °F K
Results [Settings]
SATURATION CONDITIONS
Calculated water vapour pressure higher than saturation vapour pressure.
Increase sample temperature or reduce input humidity.
Calculated water vapour pressure higher than total pressure.
Increase sample pressure or reduce input humidity.
Calculated water vapour or saturation vapour pressure is negative.
Input parameters out of range.
Water Vapour Pressure 1228.1Pa
Saturation Vapour Pressure 2488.2Pa
Dew Point 10°C
Frost point N/A°C
Relative Humidity 49.359%
Moisture (Volume) 12269ppm
Moisture (Weight) 7631.3ppm
Absolute Humidity 9.0476g/m3
Mixing Ratio 0.0076313kg/kg
Wet Bulb 14.572°C
Enthalpy 40.502kJ/kg
Water Activity 0.49359
Gas Type[?] Air O2 N2 H2 CO CO2 SF6 Ar He User Mol. Weight[?]
! Ready.
Michell Humidity Calculator Settings
Displayed results
wvp
swvp
Dew Point
Frost Point
ppmV
ppmW
Relative Humidity
Absolute Humidity
Mixing Ratio
Wet Bulb Temperature
Enthalpy
Water Activity
Result units
wvp & swvp Pa hPa kPa MPa atm mbar bara barg psia psig inHg mmHg
torr inH2O mmH2O
ppmv & ppmw ppm %
Absolute Humidity g/m3 kg/m3 gr/ft3
Mixing Ratio kg/kg (lb/lb) g/kg gr/lb
Other options
WMO %RH[?]
Psychrometer Constant[?] ×10-4 Blank for Assmann coef.
Rounding Weight [?]
Help[ Close ]
Known Parameter The humidity parameter that is known. e.g. Dew Point
Known Value The value of the known parameter.
Known Units The unit of measurement of the known parameter. e.g °C
Sample Pressure The pressure at the point where the humidity measurement is
made. Defaults to atmospheric pressure.
Pressure Units The unit of measurement of the sample pressure. e.g. Pascals
Pressure Compensation If conversion to another pressure is required, enter that
pressure in this box. The measurement units will be the same used for the Sample
Pressure.
Gas Type Choose from a list of preset molecular weights. Used only for ppmW &
mixing ratio calculations. A user-defined molecular weight can be entered by
selecting 'User'.
Mol. Weight Molecular weight of gas being measured, used only for ppmW/Mixing
Ratio calculations.
Sample Temperature The temperature at the point where the humidity measurement
is made.
Temperature Units The temperature units to use for all temperature parameters
including sample temperature, dew-point, frost-point and wet bulb. e.g. °C
WMO Standard for %RH Saturation vapour pressure is calculated over water even
for temperatures below freezing as per WMO standard.
Rounding Weight Total number of digits to show when rounding. Default 5.
Psychrometer Coefficient Psychrometer coefficient for wet bulb calculations.
Default 6.62 × 10-4
Sample Temperature
Dry Bulb
©2022 Michell Instruments Ltd.
While every effort has been made to ensure the formulae used in this calculator
are correct, this free software service is provided 'as-is' and without warranty
or guarantee to the extent of the applicable law.
Contact Us
ABOUT US
PST offers a wide range of gas, oxygen and level sensors as well as measurement
instruments including probes, transmitters and analyzers for humidity, moisture,
oxygen and trace impurities.
NAVIGATION
* Home
* About PST
* News
* Our brands
* Careers
* Contact
* Privacy
* Modern slavery statement
* Imprint
CONNECT
TEXTE D'ORIGINE
Proposer une meilleure traduction
--------------------------------------------------------------------------------