35 The Thermometer

“How hot?” “How cold?”

The thermometer is here to tell you!

Measured in degrees, with two scales: Fahrenheit and Celsius

Types of Thermometers

Infrared

• non-contact measurement
• extremely high or low surface temperatures
• laser targeting system
• automotive trade and air conditioning systems
• Important: laser spot-size and the emissivity value of the surface being measured

K-type thermometers

• Fixed and Wired Probes
• ability to facilitate a range of interchangeable plug in probes
• air, liquid, penetration and surface probes
• vary in size, material, and maneuverability

Thermal Imaging Cameras

Thermal imaging cameras have a variety of uses such as surveying buildings to find moisture and leaks. They can also identify energy loss and poor insulation and electrical faults. Ideal for detecting hidden problems.

Traditional Thermometers

• At home measurement of Air and Water
• They consist of a narrow, sealed glass tube with a bulb filled with mercury, alcohol (usually dyed red, to make it easily visible), or some other liquid at its lower end

Food Thermometers

• Dial Oven-Safe (Bimetal)
• Digital Instant-Read (Thermistor)
• (continued in Culinary…)