This portable handheld pocket-sized mini thermo-hygrometer allows for the quick and easy determination of indoor ambient environmental conditions. PCE is a combination digital hygrometer and digital thermometer used to measure relative humidity as well as air temperature, dew-point temperature and wet-bulb temperature.
This handheld multifunctional meter allows for quick and easy analysis of environmental conditions indoors and outdoors. The Humidity Detector calculates the dew point and the absolute humidity from these two values. Use of cookies Please select if the website is allowed to use only neccessary cookies or also functional cookies, as described on below link: Information about cookies. Only necessary cookies Also allow comfort cookies All cookies allowed. Humidity Detector A humidity detector, also referred to as a humidity meter or humidity gauge, is a device with a humidity sensor that measures the relative humidity in the air.
Show Info Hide Info. Order no. The humidity detector PCE-VDL 16I from PCE Instruments measures and stores the relevant measured variables: temperature, relative humidity, air pressure, light as well as acceleration in three axes by means of a vibration sensor.
Therefore, this humidity detector is ideal for monitoring vibrations on machines while simultaneously measuring and recording the relevant environmental conditions of the system. The humidity detector can be connected to up to four external temperature and humidity modules.
The temperature measuring range for the thermometer sensors is 0. ISO Calibration …. This is how the humidity detector finds its application in homes or at work. The humidity detector has an internal sensor for air temperature and humidity. The humidity detector is a measuring device for orienting measurement of temperature and relative humidity.
With a temperature measuring range of The humidity detector records the air temperature and humidity and stores them internally. The compact humidity detector with a large memory up to a maximum of 16, values is primarily used for long-term registration, for example in the food sector e.
This humidity detector PCE-ITF 5 is ideal for detecting heat bridges and incorrect ventilation behavior in homes, houses, etc. A memory of 20, sets of measurements allows the humidity detector PCE-HT 72 to use up to several months. The PCE-HT 72 humidity detector is particularly suitable for measuring tasks where it is not possible for the user to install a software for reading the measured values. With the humidity detector it is possible to determine the humidity, ambient, wet bulb and dew point temperature.
This technique shows how dry and humid the air is in your home. Simply plunk the ice into the glass of water and set the glass in a room where you believe that the moisture level may be too low or too high. Just do not place the glass in the bathroom or kitchen where the moisture levels are not the same from time to time.
Place the ice cubes and water on a table in the room and quickly exit as too much movement can impact the outcome. Leave the water and cubes in the room for about five minutes. Inspect the glass. If condensation has formed on the outside of the glass, the moisture level is high.
To absorb the excess, you may want to consider adding plants that readily absorb atmospheric moisture. If the glass shows no signs of condensation, you may want to add a humidifier. Dry air can lead to health concerns as well, such as skin conditions, eczema, or headache pain. Another easy way to figure the humidity is to use two old-fashioned thermometers the kind with mercury and glass tubing. Before proceeding with the experiment, shake the mercury in each thermometer so it settles in the bulb of each device.
Use room temperature water for the experiment. Next, place and duct tape the wet bulb thermometer and dry bulb thermometer on a piece of cardboard. The bulbs should project outwards. Switch on a fan where you want to check the moisture level, pointing it toward the thermometers.
Allow the fan to run for about five minutes. After this period, check the temperatures on each thermometer. Subtract the temperature for the wet bulb thermometer from the temperature of the dry bulb thermometer.
For example, on the Celsius scale, a difference of 10 degrees Celsius, also called the depression value, shows the percentage of humidity. To arrive at this value and the percentage, refer to a table that lists the percents of relative humidity. Tables are featured online that show the relative humidity RH in percentages using the wet and dry bulb measure.
Examples can be found, for instance, on the Engineering ToolBox site online. The hair expands when it is exposed to excess moisture and contracts in dry climates. When the air dampens, hair increases in length; when the air lacks moisture, hair decreases in length. To check this out, you need to draw an arrow. Cut out the arrow and insert at the bottom. The hole should be slightly larger than the needle of a pin. Pin the arrow on a piece of cardboard, making sure that it can easily spin.
Wrap a strand of hair around the pin and pin it above the arrow on the cardboard. Secure the other end of the strand around the arrow. Blow dry the strand first for about a minute. The hair will shrink, causing the arrow to move upwards. Next, spray water on the strand.
By referencing these points, you can determine the amount of humidity in the air. By using the above methods, you will find out how humidity is important in terms of atmospheric comfort. Indeed, measuring the humidity level is relevant as this measurement is used in a large number of testing, storage, and manufacturing processes. Humidity measurements are required in places where a need exists to reduce the level of condensation, prevent corrosion, or stop the formation of mold.
Excessive humidity can also lead to spoilage or the warping of materials. Therefore, this scientific measure plays a huge role in the manufacture and shipment of pharmaceuticals, fuels, chemicals, paper, and wood. Air-conditioning systems frequently control humidity levels using a good deal of energy to remove the vapor in the air.
Therefore, this measurement, when used to balance moisture levels, contributes to reducing energy costs and maintaining the proper environmental conditions. One of the natural hygrometers in nature is the pine cone.
The cone opens when the air is dry to release its spores. While you cannot test the humidity in a room with this natural hygrometer, the amount of moisture in the air can be shown to impact both indoor and outdoor activities and developments. To understand the measurement of moisture, you also should consider some basic concepts. For example, water vapor reacts similarly to a gas and condenses to form either ice or water, depending on the temperature.
Even if it does not condense, water vapor can still penetrate materials or react to certain surfaces. The capacity of a space to hold moisture depends on the temperature. Higher temperatures hold more moisture than colder temperatures. When measuring humidity, keep in mind that it can be expressed in one of varying ways. For example, the relative humidity is the most frequently used measurement. The interaction of a water vapor with certain materials forms the basis for relative humidity readings.
Dew point, or the dew-point temperature reading, is another way that humidity is read. The dew point represents the temperature at which dew occurs if a gas cools. Dew point measures provide the following information:. A ratio or fraction expresses the amount of water vapor within a gas. This measure may represent the volume of a substance or be registered in terms of mass. A concentration of water vapor shows the mass of vapor for each unit volume. For instance, the air in a space may contain about 10 grams of vapor for each cubic meter of space.
When a space or a gas holds the optimum water vapor at a certain temperature, it is classified as being saturated. If additional water is added to the saturated gas or if the temperature falls, the vapor condenses. Partial pressure represents another measure of water vapor. For example, air, which is a gas mix, is made of pure gas elements such as nitrogen and oxygen. The total sum of this type of gas is stated in terms of the total of the partial pressures.
The air in a room may contain a partial pressure of water vapor that reads 1, pascals Pa. Water that is supercooled below the freezing point may develop dew, which appears in this form of water occasionally. The dew eventually freezes to ice.
Now that you understand a little about water vapor concepts, you can see how hygrometer-type measurements are used to sense humidity.
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