An outdoor thermometer is designed to measure the air temperature outside a building. However, no matter how high-quality the device is, obtaining accurate readings is impossible without proper installation. Before deciding on where and how to mount the thermometer, it’s important to understand a few key considerations regarding the installation process.
Installation Features of an Outdoor Thermometer
Getting an accurate air temperature reading from a thermometer installed on a window frame is virtually impossible. This is primarily due to thermal radiation emitted by the building’s structure, especially from glass, which loses about 30% of the heat from the room. This heat inevitably affects the measuring device, increasing its readings by a few degrees.
- In winter, thermometer readings can differ from the actual temperature by at least 2–4°C.
- In summer, sunlight can cause an even greater discrepancy between the real and displayed temperatures.
To minimize deviations, follow these rules when deciding where and how to install the thermometer:
- Install it as far as possible from heat sources (window vents, ventilation system outlets, or air conditioner external units).
- Use a window facing north for installation.
- Avoid attaching the thermometer to windows that are frequently opened and closed, as this can loosen the mounting elements and cause the device to fall.
Mounting Methods for Outdoor Thermometers
Outdoor thermometers can be mounted using several methods:
- Adhesive tape
- Suction cups
- Screws
- Brackets
Adhesive Tape
The most common method is attaching the thermometer with adhesive tape. If not included in the kit, double-sided tape can be used instead. This method is simple and requires no additional tools, aside from a suitable degreasing agent such as alcohol, turpentine, or nail polish remover.
- Cons: The adhesive method is unreliable. Frequent window opening may cause the device to fall.
Suction Cups
Another method is using suction cups, often found on electronic thermometers. Suction cups are only suitable for windows that remain closed.
- Before installation, the surface should be degreased, dried thoroughly, and the device then mounted.
- Cons: Strong wind or rain can cause the suction cups to detach.
Screws
The most reliable way to mount an outdoor thermometer is with screws. Use short screws with rounded heads. To prevent moisture and dirt from penetrating the window frame, apply a small amount of sealant around the hole before mounting.
- Pros: Durable and secure.
- Cons: Can deform plastic frames. Heavy snowfalls or roof debris in winter might also affect its stability.
Wall Mounting
Instead of attaching the thermometer to the window frame, you can secure it to the wall beside the window. This method avoids damaging expensive frames and ensures greater accuracy since the thermometer is further from the glass.
- Drill holes in the wall at least 4 cm from the edge to prevent chipping. Insert wall plugs and secure screws into them.
- Standard brackets on the thermometer may not allow for proper positioning. You can modify the mounting brackets or use custom-made metal plates for a suitable fit.
Freestanding Models
If adhesive or screw mounting isn’t suitable, opt for a thermometer that sits on the windowsill. These models often include a remote sensor connected to the main unit by a flexible wire.
- The sensor and wire are durable and can withstand significant mechanical stress, ensuring long-term use.
- Cons: This method may still have some margin of error, and readings might not be perfectly accurate.
Key Takeaways
An outdoor thermometer helps measure outside air temperature accurately if installed correctly. By following these guidelines – choosing the right location, minimizing heat sources, and selecting the best mounting method – you can ensure more reliable readings and extend the device’s lifespan.
