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RTD, the full name of which is Resistance Temperature Detector, is usually translated into Chinese as "resistance temperature detector" or "thermal resistance". It is a sensor that measures temperature by taking advantage of the property that the resistance value of metallic materials changes with temperature.

In modern industrial and scientific research fields, temperature measurement is a crucial link. With the advancement of technology, the materials and designs of temperature probes are constantly evolving. Among them, the temperature probe with PTFE packaging has gradually become a popular choice in the market due to its unique performance. This article will delve into the advantages of PTFE encapsulated temperature probes and their application fields.

In the field of engineering, the response time of a temperature sensor (typically represented by the thermal time constant τ) is defined as the time required for the sensor's output value to change from the initial value to 63.2% of the new steady-state value after undergoing a step temperature change. In practical applications, we pay more attention to T90 (the time required for the change to reach 90%), which is approximately equal to 5τ, indicating that the sensor has basically completed the response.

As the "heart" of industrial production, the operating condition of the motor directly affects the stability and efficiency of the entire system. When the motor is in operation, due to factors such as copper loss and iron loss, it will continuously generate heat, causing the temperature to rise. Coil overheating is one of the main causes of motor failure and burnout.

The OT head temperature sensor, also known as the open nose temperature sensor or copper ear type temperature sensor, is a surface contact type temperature sensing device installed by bolt fixation. Its name is derived from its distinctive "O" -shaped or "T" -shaped (open) copper terminal, a design that enables it to be firmly crimped onto the terminal or busbar of the object under test through bolts, just like a cable connector.

In the mixing/stirring processes of industries such as chemical engineering, food, pharmaceuticals, and plastics, temperature is a key parameter that affects reaction rate, material uniformity, final product quality, and even production safety. The temperature sensor dedicated to the mixer, as the "sensing nerve" of the process, its accuracy and stability directly determine the quality of the product and the level of production efficiency. An ordinary thermometer cannot handle this important task. Only a sensor tailor-made for the mixer can solve the technical problems involved.

The Hesmann temperature transmitter adopts advanced sensing technology and signal processing circuits, which can precisely convert the weak signals collected by temperature sensors such as thermocouples and thermal resistors into standard 4-20mA current signals or digital communication signals. This series of products has the following outstanding advantages:

The platinum-rhodium thermocouple is a high-temperature temperature sensor based on the Seebeck effect, composed of positive and negative electrodes made of platinum (Pt) and rhodium (Rh) alloys. Its stability and high-temperature resistance make it the preferred equipment for industrial high-temperature measurement, and it is widely used in metallurgy, chemical engineering, glass manufacturing and other fields.

NTC thermistors, the full name of which is negative temperature coefficient thermistors, are a special type of semiconductor ceramic component. Its core feature lies in the fact that its resistance value will decrease nonlinearly as the temperature rises.