(A1) Quiz - Temperature Sensor

Resistance Temperature Detector (RTD)

It is a temperature sensing device that uses the resistance of a resistor wire to measure temperature. As the temperature of the metal increases, so does its resistance or the ability of the electrons to pass through it.

a. RTD
b. Thermocouple
c. PTC Thermistor
d. None of the above

Sensing Element

This is the actual temperature sensing metal element of RTD

a. Protecting Tube
b. Sensing Element
c. Process Connection
d. None of the above

Protecting Tube

This tube protects the sensing element of RTD from the moisture and outside environment. This protecting tube is made mostly of stainless steel.

a. Protecting Tube
b. Sensing Element
c. Process Conection
d. None of the above

Process Connection

Process connection of RTD that includes the standard fitting

a. Protecting Tube
b. Sensing Element
c. Process Connection
d. None of the above

None of the above

A type of RTD having elements consist or a thin metal layer deposited onto a ceramic substrate. This metal film is etched into a specific electrical circuit pattern to provide the desired resistance. Copper wires are then attached, and a protective coating is applied to both the substrate and the element. The image below shows a typical resistance pattern.

a. Thick Film RDT Sensor
b. Thin Film RTD Sensor
c. Wire Wound RTD Sensor
d. None of the above

None of the above

A wire is coiled around the interior of a ceramic or glass housing, known as a bobbin. Glass core RTD sensors are suitable for immersion in liquids, while ceramic core RTD sensors are designed to measure extreme temperatures with high accuracy.

a. Wire Wound RTD Sensor
b. Line Wound RTD Sensor
c. Thin Film RTD Sensor
d. None of the above

PT100

Type of RTD with "100" that refers to its resistance value of 100Ω at 0°C (32°F). This sensor is known for its high accuracy and stability, with minimal drift over time.

a. RT100
b. PT100
c. DT100
d. None of the above

None of the above

A type of temperature sensor that measures temperature based on the voltage generated by the junction of two same metals. It operates on the Seebeck effect, which states that when two dissimilar metals are joined at one end and exposed to different temperature.

a. RTD
b. Thermocouple
c. Thermistor
d. None of the above

Type E

Type of thermocouple that are often referred to as Chromel-Constantan thermocouples. This type has the highest thermoelectric output of common calibrations. Its temperature limitation is within -454 to 1600°C (-270 to 870°C)

a. Type J
b. Type K
c. Type E
d. None of the above

Type T

It is a very stable thermocouple and is often used in extremely low temperature applications such as cryogenics or ultra low freezers. It is found in other laboratory environments as well. The type T has excellent repeatability between -380°F to 392°F (-200C to 200°C).

a. Type J
b. Type T
c. Type E
d. None of the above

Type B

Type of thermocouple that are made up of costly platinum-rhodium alloys. The positive leg contains 30% rhodium, and the negative leg contains only 6%. The thermocouple grade wire ranges 32 to 3100°F (0 to 1700 °C).

a. Type J
b. Type B
c. Type N
d. None of the above

None of the above

Type of thermocouple that are among the most widely used, perhaps due to their relative affordability. This thermocouples are made up of two copper-based alloys, Chromel and Alumel. Its thermocouple grade wireranges to -454 to 2,300°F (-270 to 1260°C)

a. Type K
b. Type J
c. Type N
d. None of the above

Type N

Type of thermocouples that are resistant to oxidation and oxidation-related drift issues. Type N thermocouples can handle higher temperatures than type K, and offer better repeatability in the 300 to 500°C range. Its temperature condition is limited to -454 to 2300°F (-270 to 392°C)

a. Type E
b. Type N
c. Type kita
d. None of the above

NTC

Type of thermistor where resistance decreases with increasing temperature.

a. NTC
b. PTC
c. ABC
d. None of the above

PTC

Type of thermistor where resistance increases with increasing temperature.

a. NTC
b. PTC
c. IDC
d. None of the above

Encapsulation

A protective layer of thermistor made of epoxy, glass, or other insulating materials that shields the thermistor from environmental factors like moisture, dust, and mechanical damage

a. Electrode
b. Terminals
c. Encapsulation
d. None of the above

Terminals

Metal wires or contacts that connect the thermistor to a circuit for electrical conduction

a. Electrode
b. Terminals
c. Encapsulation
d. None of the above

Bead Type

Type of thermistor that is a small, high-sensitivity temperature sensor made from metal oxide ceramics, typically coated with glass or epoxy for protection. It offers a fast thermal response and is used in temperature sensing, compensation, and control applications. They are available in NTC and PTC types.

a. Disc Type
b. Bead Type
c. Probe Type
d. None of the above

None of the above

A type of thermistor is a thermally sensitive resistor with a disc-shaped ceramic body, available in NTC or PTC types and thermocouple. Made through sintering metal oxides, it is used in temperature sensing, compensation, and circuit protection due to its stability and efficient heat dissipation.

a. Disc Type
b. Bead Type
c. Probe Type
d. None of the above

Bimetallic Strip

It is composed of two dissimilar metal strips joined together. The strips are layered on top of each other, with one end joined and the other end free, allowing the assembly to bend and respond to temperature changes. When the strip is exposed to heat, the two dissimilar metals expand at different rates, and the resulting bending is utilized to determine the value of the temperature change

a. Thermocouple
b. RTD
c. Bimetallic Strip
d. None of the above