Measure Humidity Levels In Your Home in Fall and Winter, With a Hygrometer

It can be said that while humidity is essential to our health and our homes that Winnipeg in the winter is drier than in humidity than the Sahara Desert. True we all need some moisture as well as humidity in our homes and offices to maintain both comfort and health levels. However either too much or too little humidity can result in any number of problems ranging from condensation on window panes, moldy bathrooms, and musty basements to the full gamut of serious problems and concerns such as permanent damage to building and structures or respiratory concerns and allergies.

The most reliable way to measure the overall humidity in any dwelling is with a standard hygrometer - a fairly small, inexpensive as well as easy to use measurement tool which can be had at most big box or smaller hardware or building construction or heating / air conditioning supply stores and outlets.

Humidity Control

Is there an overall relative humidity (R.H.) rate or measurement that is held in the heating and air conditioning trades as a fair and acceptable health and comfort standard? Yes, overall and in general furnace and air conditioning cooling trades recommend in the range and ranges of 30 %. Remember as well that the term is not simply the one word "Humidity" but rather "Relative Humidity". What this entails is that the measured humid levels and measurements - that is moisture in the air - is relative to the temperature. Moisture is released by air as the temperature decreases, and picked up by the air as the ambient temperatures increase. Thus air that has a low rate when warm or hot, can and will rank a high number as it cools. Acceptable comfortable air when warm - say 75 or 80 degrees Fahrenheit can when chilled to 20 degrees begin to give up its moisture, become humid and "sweat" when cooled or chilled to the lower temperature ranges. Thus in the wintertime and cold weather the humid rh index should be no more than 30 % - thus giving lots of leeway should temperatures decrease yet more. However during the warmer times of year - say during summer - the R.H. relative humidity levels can increase to 60 % maximal range with no concerns what so ever to health or comfort.

What can be done to reduce excessive or high moisture levels in your home or abode? Plenty and most of it is fairly easy, standard and relatively inexpensive. Remember though that the issues may be seasonal so that problems do not creep up in the summertime but will over the cooler winter, fall and even springtime seasons.

Here are some simple steps to consider. First of all reduce moisture loss. Close the bathroom shower and washing machine drier utility rooms during use. Open the windows or better yet install an outdoors leading exhaust fan or fans. If rooms are draughty or chilly then caulk up and seal up air draft leaks, and as well insulate walls and doors if possible.

Improve heat to areas that need it. It may be a simple matter of a heating professional adjusting the heating duct flow balance in your home and / or simply cleaning ducts of dust and wintertime debris to increase and speed up warm air flow from your furnace.

Perhaps your furnace needs to be cleaned and tuned up this fall as well. Lastly do not forget to replace or clean your furnace's air filters. Clogged furnace filters restrict and reduce warm air flow. Throw away disposable filters are inexpensive to replace and can be swapped in a snap. More expensive yet effective electronic air filters need to be cleaned as well. You can simply wash the electrostatic air filters in a sink with warm clean non soapy water or in many cases even placed in a clean water cycle in your dishwasher.

In the end with a little bit of work, effort and rearrangement you should be able to normalize humidity levels in your home so that they are not an issue to health or comfort. That is high enough in the summer yet not to great during the colder and damper winter and fall times.

Measure Humidity Levels In Your Home in Fall and Winter, With a Hygrometer

Prevent mold! Hygrometer Calibration

I work with often in my role as a hygrometer home inspector. Quality hygrometer consumer and / or measuring relative humidity readings are inexpensive and notoriously inaccurate. This is a shame, because they maintain the proper humidity in your home is a good start to discourage the growth of fungus or mold. Mold is perhaps difficult to identify and is usually excluded, home inspection reports. However, if an inspector sees the form he or she will mention in the rule. Most experts, Suggest that the relative humidity is kept in a house between 30% and 50%, with 60% rarely a cause for concern. You can go online and find hundreds of articles explaining the reasons for this and offers readings for optimum climate. You could also get that information from a university counseling service near you. Having this goal percentage, especially for this climate and region, the simple steps below, you can ensure that the measurementsContact your hygrometer is properly and correctly at all times.

Calibrate a hygrometer:

Humidity Control Chamber

If you want to have a digital hygrometer to measure humidity and or to calibrate accurately, without having to buy expensive calibration kit supplier of salt, here is the easy solution. The physics behind this project is simple and reliable: different salts, when mixed with water to create mud and sewage, produces a constant and predictableHumidity.

Simplified scientific explanation:

A saturated solution at a stable temperature and pressure has a fixed composition and pressure of steam drive. Thus, in a constant temperature, no matter how much salt and how much water is present, the (RH) relative humidity, which is produced determines how long are the water and the solid phase is present. So, unless the water dries, the salt is or becomes so wet that liquid may have a certain moisture products.

Theis convenient for us that a solution of common salt with water (preferably distilled water) produced a predictable mix of moisture in a wide temperature range. The moisture created by common salt (sodium chloride) and water is 75.29% at an ideal temperature of 77 degrees Fahrenheit. The room temperature is not crucial for our purposes. For example, the relative humidity is quite stable, even with large fluctuations: saline at 59 degrees Fahrenheit and produces 75.61% relative humidity at 86Degrees Celsius, relative humidity is 75.09%.

To calibrate the lower end, 33% humidity, magnesium chloride (a salt) and water is reused. The ideal temperature of 77 degrees Fahrenheit, this solution will produce a relative humidity of 32.78%. At 59 degrees Fahrenheit, it produces a relative humidity of 33.30% and to 86 degrees Fahrenheit will produce 32.44% RH. Once again, "room temperature" is not critical.

Detailed calibration procedures:

For the majority of professional tools, we recommendboth a nadir and a higher point of reference to be calibrated. For simplicity, most manufacturers have chosen 75% and 33% RH calibration standards as standard. Therefore, to calibrate our instruments, we must be able to own the equipment in our "wet room" instead.

To create a humidity chamber with 75% salt in a container and mix with a little 'of water - but not too much. You want a wet mud, not soup. I made pots of yogurt container. I cut the tips so thatare about two inches tall and trim recessed area so that the hygrometer can rest with the sensor on the solution, without direct contact with the wet solution.

Place the hygrometer on the yogurt and seal it in a cup or two Ziploc bags. After a little 'air in the bag and the end is inevitable. This method should work with any hygrometer, including the favorable mechanical hygrometer, which is usually only checked or calibrated to 75%. Even in this caseAccommodation to ensure that the device does not get wet - it has the sense of water and relative humidity not. Normally, the hygrometer with more convenient, you can not actually calibrate the device by default, but you can take a reading to a known relative humidity and calculate a correction factor. If you use a simple tool like this are precisely calibrated to 75%, obtained by the correction factor for future reference, and work from there. Should be close enough to their needs.

NOTE:If you are a professional electronic hygrometer, which have a built-in sensor, but accessible, it is possible to simplify the calibration. Only get a couple of plastic cups, or similar foods such as oysters come in and drill holes in the lid to provide a comfortable fit for the sensor on the instrument. Label the jars of 75% and 33% and adjust the salt mixture into the glasses. I still use the cup of yogurt for mixtures of salt and jam in a firm grip, about 1 / 3 of the way into the pot, so that amoist chamber is formed near the top of the jar. Screw the lids on the jars. If you have two hygrometer, put a lid on each jar. Otherwise, put your hygrometer in a glass lid and a piece of tape or a seal from one species to another, so that will stabilize the RH. Once the correct relative humidity was created as described in the same period of time in a row, you can quickly check or to calibrate a hygrometer sensor in one of two glasses. Always provide a tool for some time, If you stabilize the moisture from one room to another. This is the most accurate method to calibrate an instrument for you, if you can do it that way. The readings will remain stable as used in a plastic bag: a bag when it is compressed by mistake or moved the content, what will happen if you calibrate the device, rather than consider them, have the stability of the moist chamber is concerned, and that can lead to calibration errors. Consequently, itProcess must be done carefully and rechecked.

Chemical solution 75%:

Use the pure salt, sodium chloride - no additives. Morton Salt preserves from the grocery store is a salt, and is inexpensive. Put a few spoonfuls of yogurt cups, and distilled water to a paste. Put them in a plastic bag is placed over the container with the hygrometer, and let stand for about 12 hours. As long as it takes to stabilize the solution. (I leave to stand overnight.)Personally, I like to see the hygrometer so you can see through the bag reads, as they can be changed, so I know when the solution has stabilized.

With more digital hygrometer, must be calibrated with the power or the display off. He, therefore, if the solution for 12 hours and stabilized, of course, I turn off the unit. Then I start with the factory calibration process. These impressions usually with a paper clip orsimilar object, a button and other controls embedded in a fixed order. In essence, it is to "teach" to "recognize" the instrument has a number next to the moisture, is exposed. With the plastic bag, you can use the hygrometer and the controls are adjusted so that a simple thing, a small hole in the pocket with the clip and the instrument, without the humidity that created it.

Chemical solution 33%:

You need magnesium chlorideHexahydrate. This is not easy to obtain as a saline solution, but it is not difficult to find and it certainly can be done much cheaper than buying the kit calibration salt. Prices and availability change, but I can buy small amounts of magnesium chloride hexahydrate, professional quality flake on eBay. It will not be much at once, but hygrometer should be calibrated twice a year, he will have an offer worth of hand. It 's always difficult to buy even simple chemicals,but can be found at chemical supply houses online. It 'also used as a defrost. (Do not buy a supplement of magnesium chloride in an organic food store + -. wrong product) a mixture of magnesium chloride hexahydrate in distilled water, in the same manner as described above, and follow all procedures themselves. You can use both pockets, 33% and 75% were started at the same time, and place the instrument in one. This can stabilize both solutions at the same time and need to begin the production of relative humidity.After the first calibration, open and quickly put the hygrometer in the bag next. Allow some time to stabilize. This can last from 40 minutes to six hours. You can tell when it is ready for calibration, because reading is the same for a long time. Fill in the second calibration and you are done for six months!

Note: If you want to verify the accuracy of the instrument, other salts can produce many different RH. The procedure, with regard to the mixingsalts and water and creating a room humidity control are the same as described above.

BATH SALTS PUBLISHED RH at 25 ° C
6.37% lithium;
Lithium chloride, 11.30%;
Potassium acetate, 22.51%;
MAGNESIUM CHLORIDE, 32.80%;
Potassium carbonate 43.16%;
Magnesium nitrate, 52.89%;
57.57% sodium;
Potassium iodide, 68.86%;
Sodium chloride, 75.30%;
Potassium chloride 84.34%;
Potassium sulphate 97.30%

And 'possible to use theseCalibration with a hygrometer, whether or not it can be calibrated to determine, this is how we can mathematically correct for inconsistencies. For example, if the machine reads 80% humidity to 75% in the saline solution, is to be read from 6.0 to 7.0% too high, and this should be considered when future readings are taken. Usually with a mechanical device, is to read only 75% being tested. Some people get a hygrometer, by testing it in a wet towel and afterfew hours, if the value of 98%. One problem is when the unit is set too high to read, and shows a reading at the top of the ladder - which seems reasonable if it is in a wet towel - the device may actually be at 110% or even 120% detection but this is not obvious, since the reading of the scale. Therefore, a second reading, shows that 50%, actually 20 points. E 'for this reason that the last two calibration points, which are both easily recognizable onDisplay of the instrument were established by the manufacturers.

Prevent mold! Hygrometer Calibration