See full version: How is; outside temperature; measured in a car
Generally, the outside temperature sensor is located under the front of the hood near the bottom of the car. Although the sensor itself is accurate, the location causes the sensor to pick up heat from the road surface. Thus, it will usually read several degrees higher than the air temperature. This is especially noticeable when driving on high speed highways for which the road surface not only picks up heat from the sun but from car tires.
In most of mine it has been low down behind the front bumper, but I did have one car that had the sensor below the driver's door. more
Most cars have a display for outside temperature, and I have been wondering how it was measured.
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Temperature and humidity are the two most basic of weather variables and all of us are interested in what they are right now. Digital thermometers are a great choice for their easy-to-read displays and affordable pricing. Typically they include additional features such as indoor/outdoor temperature and minimum/maximum readings memory. Some also include barometric pressure measurements. Digital thermometers have the advantage of being able to send and record data automatically and many are able to accept the inputs from multiple temperature sensors. This feature allows for the addition of specialized thermometers, such as those with temperature probes allowing you to monitor a pool or hot tub. A remote indoor thermometer can also be used to monitor wine cellar temperature or the temperature in another location in your house.
Very basic. Some reports of malfunctions, but the warranty comes in handy in such cases. Rain tends to interfere with the sensor.
The most basic indoor/outdoor thermometers sell for less than $20. These units offer basic tracking information, primarily temperature measurement. The displays for these devices will be monochrome only; no color. For some people, this is all they need. [links]
Regardless of how much weather data your system measures, you need to be able to decipher and read it. A sharp display screen that you can see from a few feet away is important for your enjoyment of the system. here
In addition to those basic features, the WS-2902C also provides more advanced functionality, offering even more versatility: more
As you would expect from any wireless indoor-outdoor thermometer or weather station, the WS-2902C offers these basic functions: more
A key contributor to the accuracy of the WS-2902C is the radiation shielding, which comes as a standard feature on this model. Radiation shielding minimizes the impact of direct sunlight exposure and encourages natural airflow around the temperature & humidity sensor, ultimately enhancing the accuracy of readings taken during daylight hours. [links]
You can see from this list of functions that the WS-2902C provides a full home monitoring experience. Due to this high level of functionality, this product is more expensive than standard indoor outdoor thermometers, but for its price point, it represents excellent value for money, which is why we recommend this as our top pick. more