What does pt100 mean in RTD

My friend's question I simply understood the definition of PT100, PT100 is a thermal resistance, and its material is platinum (hence PT), which we usually callPT100 RTDOr called PT100 platinum thermal resistance;

How it works: when the pt100 is at 0 degrees Celsius, its resistance is 100 ohms, and its resistance will increase at an approximate uniform rate as the temperature rises. But the relationship between them is not simply proportional, but should be closer to a parabola.

The common PT100 temperature sensing elements include ceramic elements, glass elements, and mica elements, which are made of platinum wires wound on ceramic skeletons, glass skeletons, and mica skeletons and then processed by complex processes.

PT100 RTDThe application range is very wide: medical, electrical, industrial, temperature calculation, resistance calculation and other high-precision temperature equipment are used, which can be described as a very wide range. （

Originated from Wangli. Occupy.

The PT100 temperature comparison is as follows:

1. -50 degrees: ohms.

2. -40 degrees: ohms.

3. -30 degrees: ohms.

4. -20 degrees: ohms.

5. -10 degrees: ohms.

6. 0 degrees: ohms.

7. 10 degrees: ohms.

8. 20 degrees: ohms.

9. 30 degrees: ohms.

10. 40 degrees: ohms.

11. 50 degrees: ohms.

12. 60 degrees: ohms.

13. 70 degrees: ohms.

14. 80 degrees: ohms.

15. 90 degrees: ohms.

16. 100 degrees: ohms.

XVII. 110 degrees: ohms.

18. 120 degrees: ohms.

19. 130 degrees: ohms.

20. 140 degrees: ohms.

21. 150 degrees: ohms.

22. 160 degrees: Ohms.

Twenty-three, 170 degrees: ohms.

24. 180 degrees: ohms.

Twenty-five, 190 degrees: ohms.

26. 200 degrees: ohms.

Control methods used:

In traditional instrumentation, this method is generally adopted, after the construction of constant current or constant voltage method, in the use of Ohm's law, calculate the resistance value of PT100, and then query the indexing table to obtain the temperature. This method is the simplest and most versatile.

Although the traditional method is simple, it has many shortcomings. Using the universal sensor interface chip, only a reference resistor that is not sensitive to temperature is required, and the PT100 can be connected to the UTI circuit, and the ratio of PT100 to the reference resistance can be obtained through the MCU, so as to obtain the resistance value and temperature.

This approach is ideal for microprocessor (MCU)-based systems, where all UTI information is output through only one MCU-compatible signal, which greatly reduces the number of external wiring and couplers between the discrete modules.

First, ** is different.

PT1000 RTD** is higher than PT100 RTD.

Second, the measurement temperature range is different.

PT1000 is suitable for measuring small range temperatures; The PT100 is suitable for measuring slightly larger range temperature measurements.

Third, the sensitivity is different.

1. PT1000 RTD: The temperature of PT1000 RTD changes by one degree, and the resistance value increases or decreases by about ohms.

2. PT100 RTD: The temperature of PT100 RTD changes by one degree, and the resistance value increases or decreases by about ohms.

RTD is a primary element that converts temperature changes into resistance value changes, and usually needs to transmit the resistance signal to a computer control device or other primary instrument through a lead.

Encyclopedia-PT100 RTD.

RTD PT500 is actually a RTD graduation number, generally including PT10, PT100, PT500, is a widely used temperature measuring element, in the range of minus 50 to 600 degrees Celsius has the advantages of any other temperature sensor, including high precision, good stability, strong anti-interference ability.

Thermal resistance measures the temperature by using the characteristics of the resistance of a metal conductor or semiconductor when the temperature changes, and the heated part of the thermal resistance (temperature sensing element) is formed on the substrate by a thin metal wire evenly wound around the frame made of insulating material or by laser sputtering. When there is a temperature gradient in the measured medium, the measured temperature is the average temperature of the dielectric layer within the range of the temperature sensing element.

RTD materials, RTD temperature measurement is based on the fact that the resistance value of a metal conductor increases with temperature. Thermal resistance is mostly made of metallic materials, mostly platinum and copper, and materials such as nickel, manganese and rhodium are now used to make thermal resistance.

How does PT100 RTD know the resistance value to calculate the temperature? Hello dear, the resistance value of pt100 at zero degrees Celsius is 100 ohms, below 100 ohms is below zero degrees Celsius, higher than 100 ohms, the temperature is greater than zero degrees Celsius, and every time the resistance value of one ohm is increased, the temperature rises about 100 degrees Celsius, that is, the temperature (measured resistance value - 100)*, through this commonly used conversion relationship can quickly calculate the temperature value. Hope it helps.

Summary. Hello, it's not just the difference in resistance. The main differences are:

1.Sensitivities are different. The reaction sensitivity of PT1000 is higher than that of PT100, PT10 is one degree, the temperature of PT1000 changes by one degree, the resistance value increases and decreases by about ohm, the temperature changes by about ohm, and the resistance value increases and decreases by about ohm.

2.The measuring temperature range is different. The PT1000 is suitable for small range temperature measurements, and the PT100 is suitable for slightly larger range temperature measurements.

It is a platinum thermal resistance, and its resistance is proportional to the change in temperature. The relationship between the resistance value of PT1000 and the temperature change is as follows: when the temperature of PT1000 is 0, its resistance value is 100 ohms, and at 100 its resistance value is about ohms.

Is there any difference between PT10, PT100 and PT1000? Is it only ten times the resistance?

Hello, it's not just the difference in resistance. The main differences are:1

Sensitivities are different. The reaction sensitivity of PT1000 is higher than that of PT100, PT10 is one degree higher, PT1000 temperature changes by one degree, the resistance value increases and decreases about ohm, the temperature changes by about ohm, and the resistance value increases and decreases by about ohm 2The measuring temperature range is different.

PT1000 is suitable for measuring small range temperature measurementsPT100 is suitable for measuring slightly large range temperature measurements, and the measurement is a platinum thermal resistance, and its resistance is proportional to the change in temperature. The relationship between the resistance value of PT1000 and the temperature change is as follows: when the temperature of PT1000 is 0, its resistance value is 100 ohms, and at 100 its resistance value is about ohms.

<> pt10 and pt100 are the same thing.

It's the same.

1. The principle is different;

The working principle of PT100 is that when the PT100 is at 0 degrees Celsius, its resistance is 100 ohms, and its resistance will increase at an approximate uniform speed as the temperature rises.

Thermocouple working principle: there are two different conductors or semiconductors A and B to form a loop, when the two ends are connected to each other, as long as the temperature at the two junctions is different, the temperature at one end is t, which is called the working end or hot end, and the temperature at the other end is t0, which is called the free end (also called the reference end) or the cold end, an electromotive force will be generated in the loop, and the direction and magnitude of the electromotive force are related to the material of the conductor and the temperature of the two contacts.

2. Different characteristics; The resistance of PT100 changes with temperature. Thermocouples are characterized by high measurement accuracy; Large measuring range (200 1300, 270 2800 in special cases); Fast thermal response time;

3. The output value is different; The thermocouple outputs the temperature difference potential, while the PT100 outputs the resistance value that varies linearly with temperature.

PT100 is a RTD, and a thermocouple is not a RTD.