Measuring Instruments/
Test Equipment

Absolute Humidity Meters

In our web pages, you will find absolute humidity meters that can measure relative air humidity, or combined devices that can also measure temperature. These absolute humidity meters measure different ranges of humidity depending on the model. Relative air humidity is an important factor in most sectors, including industrial, transport and gardening. These absolute humidity meters are versatile in that they can take measurements, store them to memory and transfer data to a computer for further detailed analysis. There is also the calibration standards for the device which makes it easy to ensure that measurements are their most accurate. Many of our absolute humidity meters come with an ISO calibration certificate and some models are legally validated. They are very useful in evaluating damage in a warehouse. If you don't find the absolute humidity meters you are looking for, please contact us and we will help you find the best solution to suit your needs by calling our offices on: +44 ( 0 ) 191 377 3398 and our technical staff will advise you regarding our products.

Technical specifications for our moisture testers can be found at the following links:

- PCE-333 absolute humidity meters
  (absolute humidity meters, measures humidity in fire wood, sawn wood)

- PCE-WP21 absolute humidity meters
  (absolute humidity meters for building materials to measure, humidity of concrete)

- PCE-HGP series absolute humidity meters
  (combined testers to measure relative and absolute humidity and temperature)

- Absolute humidity meters - Building materials  
  (to measure absolute humidity in building materials without any damage)

- Absolute humidity meters - Wood 
  (touch-sensitive or penetrating sensors)

- Absolute humidity meters - Paper
  (meters for a quick and efficient measurement or humidity in paper)  

-  PCE-W3 absolute humidity meters 
  (for a quick and accurate measurement or humidity in paper with a strong probe)

- PCE-WM1 series absolute humidity meters 
  (hygroscopic moisture in [g/m³] and [%], temperature, dew point ,external sensors)

- PCE-SMM 1 absolute humidity meters
  (to determine the humidity of earth, measurement range up to 50%)

- PCE-WT1 humidity meters
  (To determine accurately absolute humidity of saw-dust)

- absolute humidity meters - Balances 
  (balance for measuring moisture content)

All absolute humidity meters come calibrated, but as their sensor's accuracy deteriorates with use, they should be recalibrated on a regular basis. A calibration can be done by the user of the device by using that optional calibration standards or the device can be sent to us and we will perform a recalibration that will meet ISO standards. (Calibration / recalibration of absolute humidity meters).

                                                        
     Recalibration standards                         Some devices use a                    ISO calibration certificate
    for absolute humidity meters                        calibration chamber                      for absolute humidity meters
 

Information about relative humidity: Relative humidity (r.h.) shows the relationship between absolute humidity (the amount really there) and the saturation state of water vapors. Relative air humidity is measured using absolute humidity meters, that show on their displays from 0% (absolutely dry air) up to 100% (air that is completely saturated, such as fog, clouds or steam bath). Some models of absolute humidity meters ave an unlimited measurement range. The physical area is between 40 and 65% r.h. Given that hot air possesses the ability to absorb more water vapour than cold air, people feel that in winter, air is too dry and in summer it is too humid. If air heats up it increases the amount of water vapour to that of saturation. The consequence is that the % of relative humidity decreases while the real quantity of water remains constant. Something similar occurs when air is cooled, decreasing the quantity of water vapour. This increases the percentage value of relative humidity. Condensation forms when there is an excess of water in saturated conditions. Some of our absolute humidity meters offer the ability to not only measure relative humidity and temperature, but can also calculate dew point and dew point temperature. Dew point temperature is defined as the temperature at which the actual vapour content of air is the maximum (100% relative humidity). Dew point temperature is independent of the actual temperature. One possibility of dew point temperature is freezing metal until its surface forms condensation. The temperature of the metal will then be the dew point temperature. As we have mentioned, many of our absolute humidity meters show dew point on their display.

If you wish to view or print a selection of absolute humidity meters from our catalogue, click the PDF symbol.

 

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If you have any doubt, call our technicians on: +44 ( 0 ) 191 377 3398

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