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PT100 temperature sensor cable material
2021-06-29
pt100温度传感器线缆材料 上海维连电子PT100 temperature sensor cable material
 
Cables used to connect the PT100 temperature sensor usually have copper -based conductors. In our own sensors, we use copper plating; tin plating, silver plating or nickel plating depending on the temperature range. However, pure copper is allowed.
 
For very high temperatures, we use nickel -based cables. Please note that the resistance of nickel is about 5 times that of copper, so you should always use the 3 or 4 -line connection system.
 
The conductor size does not need to be very large. For example, without using a power cord, the instrument line is enough. Velian usually uses 7/0.2mm and 24AWG twisted guides in our own sensors. There is no problem even if the cable length is several meters. Of course, large cables can be used for long cable lengths, but this usually only increases unnecessary costs to shorter operations. For long cable operation, we recommend using the temperature transmitter.

Cable insulation
The types of cables that you choose to connect and measuring instruments will depend on the operating conditions of the process. Many of the sensors we provide have a flying wire that is directly connected to the instrument. The cable is carefully selected to meet the temperature requirements of the application and other environmental requirements. This may include chemical resistance or waterproofing.
 
We usually use cables with one of the following four types of insulation:

PVC
PVC is the preferred insulation material for almost all cables we see in daily life. Everything is PVC from the power cord to the leader of the headset and the phone. Generally speaking, due to its limited working scope, PVC is not a very commonly used cable in many temperature applications. Standard PVC is only applicable to the range of -10 to +70 ° C. The more commonly used version of the industry will expand the upper limit to 105 ° C. There are still a large number of applications in this range. If the application allows PVC, it is the lowest cost choice.

Silicone Rubber
If flexible, then silicon rubber is the best choice. Any cable using silicon rubber is more flexible than almost any other types of cables, and its operating temperature is very useful, with -60 to +180 ° C. Special versions can be run at 240 ° C, making it a more expensive alternative to polytrafluorolytic products.
Silicon rubber is an excellent adhesive material, which is the first choice for the probe of moisture -proof.

Polytefluoroethylene
It may be the most common cable used in temperature sensor manufacturing, PTFE and more common PFAs to handle extensive application requirements. Polytetrafluoroethylene is an insulating band entangled on the cable and sintering, and PFA is a form of squeezing. These materials compose part of a set of materials called fluoric polymers, indicating that fluoride is used in the composition of the material. Others include FEP, ETFE (tetrafluoroethylene symbol) and FPM/FKM (fluorine rubber).
The working temperature range of these materials is -268 ° C (5K, -450 ° F) to +250 ° C. It is worth noting that the material still maintains good flexibility when it is as low as -75 ° C, but when it is lower than the temperature, we recommend that the cables are used staticly.
In addition to the extensive temperature range, these materials are also known for their actual chemical inertia. They can be used with confidence without the existence of almost any material without the risk of degradation.
This material has extremely low friction coefficients (ranked third in all known materials) and has strong hydrophobicity. This means that it exclude water and other substances, making it extremely difficult to combine. Although we have the ability to chemically etch a fluoride polymer material before sealing, we recommend choosing other materials for moisture -proof components as much as possible.

Stainless steel armor/catheter
In some applications, additional mechanical protection needs to be provided for cables. The best way to achieve this goal is to use stainless steel flexible armor or catheter. It has various levels of stainless steel to choose from to meet cost and durability requirements. Although armored provides mechanical protection, it does not provide any additional waterproof.
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