Hygrometers are used to measure relative humidity and are based on the hygroscopic properties of hair or synthetic fibers, which change their length with changes in humidity.
While natural hair can also be used at temperatures below 0 °C, hygrometers with synthetic fibers react extremely slowly in this temperature range and are therefore not recommended for outdoor use, as the inertia of the synthetic fiber increases with decreasing air temperature.
Hair hygrometers require regular regeneration (every few weeks); this is generally not necessary for hygrometers made of synthetic fibers.
The living climate hygrometer-thermometer
- Signaled in the "green zone" Healthy living environment at all times, when red: STOP, briefly and vigorously opening the window helps!
- This saves you from having to go through technical explanations that are difficult to convey, because the dial provides the memorable information on how to handle humidity!
- Allows maintenance-free operation: No regeneration thanks to high-quality synthetic fibers!
- Features a stylish wooden base for free-standing installation for precise, fast-acting measurements!
- Works at all times without batteries, making it environmentally friendly!
- Contains clear user information with useful background information!
- The bimetal thermometer indicates optimal living space temperatures in relation to optimal humidity conditions . This opens up opportunities for energy savings without major investment.
The Living Climate Hygrometer-Thermometer, with its chrome-plated steel housing, also enhances any comfortable living space. It is the further development of the Fischer Hygrometer, optimized for humid living spaces – the test winner at Stiftung Warentest in March 2003.
The main features of the indoor climate hygrometer thermometer with synthetic fibers are:
- Can be used down to 0 °C
- Energy saving function through graphic representations on the scale
- Measurement accuracy 3%
- not suitable for use in an ammonia environment
- low-maintenance
- low hysteresis
- high reaction speed
- good handling
- high reliability
- easy operation
- Bimetal thermometer division 2 K
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The draft standard available since the beginning of 2006 for the new regulation of the relevant |
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- How to maintain the optimal humidity level
The need to limit humidity levels in the home to avoid excessive levels only exists during the heating season, starting with the heating system's operation in the fall. Maintaining a temperature of approximately 20°C throughout the home is recommended. Therefore, you'll find the 18-22°C range marked in a pleasant, medium green on your thermometer scale .
- In winter
At average outside temperatures below approximately +5°C, with sufficient air circulation and a temperature of approximately 20°C , a humidity level of around 40-50% relative humidity can easily be achieved. This range is marked on your hygrometer in pleasant, medium green. During periods of frost, indoor humidity of less than 40% relative humidity is completely normal. Especially in older buildings with poor thermal insulation, 40-50% relative humidity (at approximately 20°C) must be maintained as the upper limit, as prolonged exceedance of this limit increases the risk of mold growth.
- In autumn and spring
At milder outdoor temperatures averaging 5-15°C, a higher relative humidity of 50-60% is possible. This is marked on your hygrometer in a pleasant, medium green . Please note: Warmer rooms are relatively drier (light green) , and colder rooms become relatively more humid (dark green) . We therefore recommend not cooling any room below 16°C. Achieve a healthy living environment through proper ventilation.
If your windows frequently fog up or mold grows on your walls, it's a good idea to review your habits and reorient yourself. The answers to the following questions can help:
- How often should you ventilate?
The indoor climate hygrometer always answers this question. Whenever the needle enters or exceeds the dark green zone , you have reason to ventilate.
- How long should you ventilate?
This is also indicated on the hygrometer: In winter, at cold temperatures below approximately +5°C, a maximum of 5 minutes is sufficient. If it is milder outside (5-15°C), about 10-15 minutes is required.
- How to ventilate?
Effective air exchange is only achieved by opening a window or door in a room wide ("shock ventilation"). A draft is not necessary. Tilting the window is completely insufficient and wastes energy.
- What to do if you are away during the day?
It's enough to ventilate sufficiently while you're there. This means at least once in the morning before leaving, once upon arrival, and once before going to bed. It's equally important not to turn the heating all the way down during the day (18-16°C).
- Ventilate even in fog or rain?
This definitely makes sense. Even relatively humid cold air always contains less moisture than relatively dry indoor air. Besides, you need fresh oxygen even in humid weather.
- What should you keep in mind in summer?
Except for the basement, all rooms can be ventilated as desired. The indoor climate hygrometer has no limits; the humidity is always high enough to match the outside climate. This isn't harmful, as the walls (except in the basement) are sufficiently warm.
- How should the basement be ventilated?
Basement rooms are at risk in summer because the outside air contains a lot of moisture, which condenses on cold surfaces. Therefore, even basement apartments should not be ventilated when outside temperatures exceed 15°C.
- Is it possible to dry laundry in the apartment?
Ideally, a drying room that can be ventilated continuously (except in summer or during frost) is ideal. In an apartment, this is only possible under the constraints of keeping the room closed and well-heated. During the drying period, it is important to thoroughly ventilate the room several times. A hygrometer provides ideal support for this.
- Placement of the measuring device
To ensure reliable measurements, the hygrometer must be properly located. Choose a medium height of 1-2 meters above the floor near interior walls. Avoid cooler exterior wall or window areas, as well as near heaters or direct sunlight. Alternatively, your device can also be placed upright. This provides optimal access to the ambient air and is therefore more responsive. A wooden base version is available: It's best to insert it slightly tilted forward and then push it back slightly. Please ensure it's securely attached and in a safe location.
- Survey results of the Techem study from 2016
Almost 40 percent of Germans would like temperatures above 22 degrees Celsius in the living room and bathroom. This is the result of a representative nationwide survey on the individual heating and ventilation habits of tenants in apartment buildings, commissioned by Techem. People aged 59 and over in particular like it warm and cozy there, as they report an average comfortable temperature of 0.5 to 0.6 degrees higher for these rooms. The situation is different in the kitchen, hallway, and bedroom: Here, the comfortable temperature stated by respondents decreases with increasing age. This is particularly noticeable in the bedrooms. While respondents up to 29 years of age like an average temperature of 18.4 degrees Celsius there, for people aged 59 and over, this is considerably lower at 16.8 degrees Celsius.