I have a question regarding temperature transmitters; thank you!

Generally not. The temperature variation aspect is taken into account during the design process; the heat transfer to the gauge head is estimated to be around 30+°C, and the air also helps with heat dissipation... If this aspect isn’t properly designed, integrated temperature sensors won’t be able to be sold. The integrated temperature sensors used at 260+°C have worked without any failures for 5 years now……

The temperature sensor protection tube is what we refer to as a temperature sleeve; the temperature sensor is inserted into this sleeve and comes into contact with the flange of the sleeve (the flange is made thicker to ensure proper heat transfer). Manufacturers take these factors into account when designing it, so you can use it with confidence

Every instrument has its operating temperature range and limit temperatures; as long as the temperature remains within these limits, it is considered to be in a normal operating environment

For high temperatures, a split-type design is preferable; however, a medium temperature of 140°C is not a major issue

The medium temperature is transmitted along the thermometer protection tube, but it does not cause an increase in the temperature of the transmitter’s display

Don’t worry; the designers have already thought of whatever you come up with. . . . It’s not that high in temperature.

The function of the protective sleeve is to safeguard the temperature sensing element from being worn out by prolonged exposure to fluids. An integrated temperature transmitter is essentially the same as a thermocouple; its temperature-sensing part consists of a hot end, which is the temperature-sensitive end, and a cold end (reference end). The temperature sensing end measures the temperature of the fluid, while the cold end measures the reference temperature, that is, the normal ambient temperature. The temperature is indicated through the potential difference; by adding a signal conversion device that converts this potential difference into a 4–20 MA signal, an integrated temperature transmitter is created. Since the cold end is located near the conversion device, the components are not damaged due to high temperatures. Thermocouples are divided into ordinary thermocouples and armored thermocouples. Ordinary thermocouple wires are covered with heat-resistant insulating sleeves (such as ceramic beads) and housed in ceramic or metal protective casings. An armored thermocouple combines a thermocouple wire, insulating material (electrofused magnesium oxide), and a metal protective sleeve into one unit. As can be seen from its composition, the core provides excellent insulation and heat resistance; therefore, normal use will not damage the component nor affect its service life.

Integrated? ? What kind of thermometer is that?

No, the issue of heat dissipation has been taken into account during the design and manufacturing process; otherwise it wouldn’t be made as an integrated unit....