How to determine the type of temperature transmitter How to determine the type of temperature transmitter
Temperature transmitters come in many different types of performance, technology, and materials. It is a technical matter to determine a type of temperature transmitter. The technician only determines the type of temperature transmitter. In order to have further requirements for other performance, how to determine the type of temperature transmitter?
The temperature transmitter is structurally designed to fully reflect the temperature of the sensor or the surface to be measured within the specified measurement time. The output of the temperature transmitter is only the temperature of the sensitive component. In fact, it is often difficult to ensure that the transmitter indicates the temperature, ie the temperature of the object being measured. When this difficulty is encountered, the type of temperature transmitter should be selected. The temperature of the fluid in the vessel is typically measured with a thermocouple or RTD probe, but when the life of the entire system is much longer than the expected life of the probe, or if the probe is expected to be removed quite frequently and the opening or opening of the vessel is on the vessel wall Install a permanent thermowell.
The use of thermowells significantly increases the measurement time constant. When the temperature changes very slowly and the thermal conductivity error is small, the thermowell will affect the measurement accuracy. If the temperature changes rapidly, the temperature of the sensitive component changes rapidly, and the thermal error increases, the measurement accuracy will be affected. influences. Therefore, we must weigh the two factors of maintenance and measurement accuracy.
In summary, the most important thing to choose a temperature transmitter is to choose whether the structure of the temperature transmitter meets your requirements. The sensitive components of the measurement are also factors that the technicians need to consider. I hope this technical article is presented to you. Helpful.
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