They really don't have a name, so they are just called thermometers.
Unless your refrigerator has a built-in thermometer, you would need to check it with a thermometer. Purchase of a refrigerator thermometer is highly recommended.
When a thermometer is left in the refrigerator, it measures the temperature of the air inside the fridge. Depending on the type of thermometer, it will display a lower temperature as it equilibrates with the cooler environment. This can provide an indication of the refrigerator's efficiency or if it is functioning properly. Once removed, the thermometer will gradually return to room temperature.
You can measure the refrigerator temperature using a refrigerator thermometer placed inside the unit. Allow the thermometer to sit for a few hours before checking the temperature. The recommended temperature for a refrigerator is between 35-38 degrees Fahrenheit.
Not usually. An actual "meat" thermometer is not designed to be used in the refrigerator, nor are they generally of the appropriate temperature range.
To get the most accurate reading, place the calibrated thermometer in the middle of the refrigerator, away from the walls and any food items. This location will provide a more average temperature reading, giving you a better sense of the overall temperature inside the refrigerator.
A RV absorption refrigerator uses a thermistor as a thermostat. The thermistor is moved up or down to regulate the refrigerator temperature.
There are several things you can use to guestimate the temperature, but nothing else will give you a decent value for it.
the sixth thermometer
For measuring temperature in a refrigerator, it’s best to use an appliance thermometer, specifically designed for this purpose. These thermometers are typically easy to read, provide accurate temperature readings, and can withstand the cold environment. Some models are digital, while others are analog with a dial display. Always ensure the thermometer can measure temperatures within the typical refrigerator range of 32°F to 40°F (0°C to 4°C).
The units on a Fahrenheit thermometer are called degrees Fahrenheit.
Mercury the liquid inside thermometer is mercury.. but it is called thermometric liquid.
In the center of the the refrigerator