When selecting electrical connections for sensors, choosing the right cable type is essential. The cable jacket material you choose should be based on factors such as budget, environmental conditions, and liquid compatibility. In this article, we will discuss about four common cable types—PVC, PUR, FEP, and PE—to help you make a well-informed decision for your application.
PVC (Polyvinyl Chloride) Cables
PVC cables are widely used due to their versatility and cost-effectiveness. They perform well within a temperature range of 0 to 105°C. One of PVC's primary benefits is its flexibility, which makes it easy to install in various environments. Additionally, PVC is known for its good chemical and abrasion resistance, which is especially useful when dealing with different types of liquids.
PVC cables are suitable for a variety of applications, but it’s important to note that while they are moisture- and saltwater-resistant, they are not halogen-free. This could be a concern in fire-sensitive settings. PVC is best suited for non-submersible applications and provides an excellent price-to-performance ratio, making it an attractive choice for budget-conscious projects.
PUR (Polyurethane) Cables
PUR cables are designed to withstand more demanding environments than PVC cables. With an operating temperature range of -45 to 80°C, PUR cables are highly flexible, even at low temperatures, and are exceptionally abrasion-resistant. They are also halogen-free and self-extinguishing, which enhances safety in case of fire.
PUR cables are highly resistant to oils, oxidation, and ozone, making them ideal for environments where exposure to harsh chemicals is common. Their durability and chemical resistance improve the reliability and longevity of electrical connections in challenging applications. Typical uses include measuring seawater and diesel.
FEP (Fluorinated Ethylene Propylene) Cables
FEP cables offer superior chemical resistance, making them ideal for the most aggressive environments. With a temperature range of -45 to 80°C, FEP cables combine the properties of PUR and PTFE (Polytetrafluoroethylene) to provide exceptional resistance to virtually all chemicals.
These cables are particularly valuable in applications that require compatibility with highly aggressive liquids. Their ability to perform reliably in extreme conditions makes FEP cables the preferred choice for industries dealing with corrosive substances and high temperatures. While FEP cables can be more expensive than PVC or PUR, their durability and resistance to chemicals can reduce long-term maintenance costs.
PE (Polyethylene) Cables
PE cables are known for their flexibility and durability. They operate effectively in a wide temperature range of -45 to 80°C. These cables are resistant to external pressure and weight and can withstand corrosion from chemicals such as acids and alkalis. PE cables also offer good wear resistance, anti-aging properties, and flame retardancy.
PE cables are ideal for applications such as water measurement sensors, where flexibility and resistance to environmental factors are critical.
Conclusion
Understanding the properties of PVC, PUR, FEP, and PE cables will help you select the right cable material for your project, ensuring optimal performance and longevity for your sensors. Whether you are working with industrial applications or more sensitive environments, choosing the right cable is key to maintaining operational success.
For more technical guidance on cable jacket materials, feel free to contact Holykell.