Instrumentation Cables
What Is Instrumentation Cables
Instrumentation Cable are single or multi-pair/triple cables designed to carry signals. They are used for connecting instruments and electrical equipment especially in plants where process control is required, where transducer-generated signals are transmitted through to panels, controllers and other devices.
Advantages of Instrumentation Cables
Reliable Transmission
Instrumentation cables are designed to provide reliable signal transmission, ensuring that instrumentation devices can transmit signals accurately and without interference.
Durability
Instrumentation cables are designed to withstand harsh environments, including exposure to chemicals, heat, and extreme temperatures. This helps ensure that the cables remain operational for long periods without the need for maintenance or replacement.
Safety
Instrumentation cables are designed to meet safety standards, ensuring that they are safe to use in hazardous environments. They help prevent accidents and reduce the risk of equipment failure, ensuring the safety of workers and equipment.
High Performance
How hazardous or aggressive may be the working environment, instrumentation cables can be used without any fear. These cables are not only highly conductive but also insulated against fire and chemicals. The jacket option offers excellent resistance against oil, grease, ultraviolet rays and extreme temperatures.
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Instrumentation CableInstrumentation Cable are generally use for indoor installation and suitable for wet and dampAdd to Inquiry -
Instrument And Control CablesThe galvanized steel wire armor provides excellent protection. Generally used within industrialAdd to Inquiry -
Fire Resistant Instrument CablesConductor: Annealed copper wires according to BS EN 60228. Insulation: Polyvinyl chloride PVC.Add to Inquiry -
Flame Retardant Instrument CablesBS 5308 cables are designed to carry communication and control signals in a variety of installationAdd to Inquiry -
Instrument CablesBS 5308 cables are designed to carry communication and control signals in a variety of installationAdd to Inquiry -
PVC Insulated Instrumentation CablesBS5308 Cable unarmored cable are generally use for indoor installation and suitable for wet andAdd to Inquiry -
XLPE Insulated Instrumentation CablesBS5308 Cable unarmored cable are generally use for indoor installation and suitable for wet andAdd to Inquiry
- Tel: +8615006408062
- Email: cable@renhuicable.com
- Add: Building M7, Jingdong Digital Economy Industrial Park, Cuizhai Street, Start-up Area, Jinan City, Shandong Province, China.
Why Choose Us
Our Company
Our Company
Shandong Renhui Cable Co., Ltd. is founded in 2010, located in Jinan city,Shandong Province, China. The company covers an area of 50 thousand square meters, registered fund of RMB 5 million, has 100 staff and workers. We are a professional cable manufacturer in China.
Our Products
Our products mainly cover low and medium voltage cable, PVC insulated cable, XLPE insulated cable, control cable, communication cable, rubber cable, mine cable, welding cable, ship cable, aerial bundled cable and other related customized cables. These cables are used in Power metallurgy, Oil&Chemical Industry, Power Station, Mine, Port and Architectural Engineering, and other fields.
Sales Market
The products have been sold to many countries and regions in the world, such as Russia, Algeria, Bahrain, Bangladesh, Brazil, Chile, Cyprus, Indonesia, Iran, Malaysia, Oman, Dubai, Pakistan, Philippines, Singapore, Sri Lanka, Tanzania, Yemen, Kenya, Vietnam, Mongolia.
Common Materials used in Instrumentation Cables
Some of the common materials used in instrumentation cable design are PVC, PE, XLPE, LSZH, mica tape, steel wire armoring, metal braid, and lead alloy sheath.
Polyvinylchloride (PVC)
Polyvinylchloride (PVC) is used as either an insulation material or as a sheathing material. PVC is a highly versatile material that has traditionally been used extensively across the cable industry. It is flame retardant and self-extinguishing.
PVC can be modified for a variety of applications including indoor and outdoor use, in wet and dry conditions, in conduit or direct burial, and for both high and low-temperature applications.
PVC also has resistance to a wide range of chemicals including some oils and solvents. PVC is replaced in certain applications by low-smoke, halogen-free materials, where there is a substantial risk to life and equipment in a fire situation.
Polyethylene (PE)
Polyethylene (PE) is used as either an insulation or sheathing material. It has excellent chemical resistance, including oils, and extremely low water absorption. It also has superior mechanical strengths and good low-temperature resistance.
PE cables tend to be somewhat more rigid due to the hardness of the PE material and are not flame-retardant. Due to its flammability, PE sheathing is generally used with cables for outdoor applications or for direct burial.
Cross-linking Polyethylene (XLPE)
Cross-linking PE improves the performance of the cable, increasing the temperature and chemical resistance. XLPE material is used mainly as an insulation material.
Low Smoke Zero Halogen (LSZH)
Low smoke zero halogen (LSZH) materials are used in place of PVC materials where there is a significant risk to life and equipment in fire situations. These cables do not produce halogen acid gases when they burn and do not release the significant levels of dense black smoke that the PVC equivalent materials would in the event of a fire.
Various additives can be added to these materials to improve resistance to chemicals including oils and solvents. Silicone rubber is used in applications where there is a need for extended temperature ranges, suitable for applications from -90°C to 180°C.
Silicone rubber is also used widely where cables are required to maintain circuit integrity under fire conditions.
Mica Tape
Glass-backed mica tape is extensively used in fire-resistant cables due to its exceptional performance as an insulation material in a fire situation.
Steel Wire Armouring (SWA)
Steel wire armouring (SWA) is used to offer a significant degree of resistance to mechanical impact.SWA is composed of either round steel galvanized wires or flat steel galvanized wires helically wound around the bedding covering the insulated conductors.
Single or Double Layer of Metal Tape
Metal tape of either steel or brass is longitudinally wrapped around the bedding covering the insulated cores. This cable whilst offering a tough tight covering seal over the cores is also somewhat less flexible than the SWA version.
Tapes offer the most complete coverage. Steel tapes provide the best inductive protection whereas brass tapes are most frequently used for rodent protection.
Metal Braid
The braid is either galvanized steel or plain or tinned copper wires. Braiding these fine wires makes the cable more flexible and lightweight than the other means of mechanical protection, SWA, and metal tapes.
Lead or Lead Alloy Sheath
Lead sheathing offers the best protection against oils and chemicals and is essential where there is constant exposure to heavily polluted mud with hydrocarbon content.Lead alloy is a lighter alternative to the chemical barrier offered by lead, it is frequently used in areas of high vibration.
Instrumentation Cables have high impedance and low power because of the manufacturing process. This is so that it can transmit a weak signal from one piece of equipment to another, such as from a guitar to an amplifier, from where it gets a boost to a more usable level.
Since it only needs to carry a minimal DC with a small voltage, it only comprises a single positive inner wire with a small diameter.
It’s often a 24-gauge wire running through an outer jacket, many insulators, and braided shielding that acts as the ground connection.
Instrumentation Cables have a lightweight wire with a small size that offers excellent flexibility, while the shielding prevents much noisy electromagnetic interference that affects low-power signals.
The difference between control and instrumentation cable is mainly in use. Either can be solid or stranded. Back in the "good old days" control cables (for motors) needed to have larger wire than instrumentation cables in order to handle the larger currents required for the motor starters. They were typically terminated under screw terminals, and solid wire makes this termination easier. The instrumentation cables were smaller diameter and frequently made of stranded wire which is more flexible. Today, with greater use of electronic starter controls, it is mainly switchgear (breaker) control wiring that needs the larger diameter wire.
The other difference between the 2 types is that the instrumentation cable is typically a shielded (screened), twisted pair. This construction serves to minimize "crosstalk" (inductive coupling) that causes erroneous readings for the instrumentation. The control cables, whose cicuits operated at 125 VDC, 110 VAC or 220 VAC levels were generally immune to this, and so did not require the shielding. when the control signals are run at 24 VDC, the shielded twisted pair construction is advised for them as well.
You still need to be careful about level separation, but as long as you are dealing with low DC voltages (28 V maximum), resistive loads, and using shielded twisted pair cables, you can combine the control and instrumentation cores into a single cable where needed. (It is still better practice to keep them separate.) You also should keep inductive loads (like solenoids and relays) separate from the instrumentation, since they can create high inductive spike voltages when they are de-energized.
You still need to choose a wire size sufficient to handle the maximum current and insulated for the maximum voltage. For the control wiring, be careful about using a single common wire for multiple devices - it will need to be sized for the total current.
What Instrumentation Cables Factors Affect Quality
When choosing an Instrumentation Cables, these are a few of the key things you should look for:
Screening
It would help if you screened your instrument cable to minimize noise. Screening shields the conductor from electrical interference. Usually, manufacturers apply a conductive plastic jacket of braided copper.
Capacitance
A cable’s capacitance is how it can respond to differences in voltage. Measured in pF per foot or meter, a figure of around 70 pF/m is low for an instrument cable.Low capacitance for equipment with high impedance means a stable frequency response.
Besides, you can measure the capacitance of a cable per unit of length. A longer cable will provide more capacitance as opposed to a shorter one. Hence, it is best that you only use as much as you need.
Connectors
You do not need to opt for an expensive connector. Any mono jack plug that provides adequate performance will work fine, even if you get gold-plated connectors.
You will likely plug it into an ordinary nickel-plated amplifier jack, which cancels out any benefit you would get from gold plating in the first place.
The reason why gold-plated connectors are preferable in some situations is not because of their conductivity but rather their corrosion resistance.
The disadvantage of gold plating is that it is soft, so it is not suitable for excessive wear and tear applications.
As instrumentation cables can be utilised in so many different types of equipment, they are usually custom built to the particular requirements of whoever has requested the cable. These requirements are usually based on the size of the equipment, the kind of tasks the cable is going to have to power and the conditions in which the cable will have to operate. This places a lot of emphasis on the cable designer to come up with a suitable solution for the particular application.
This involves suggesting the kind of materials that could be used for the cable, determining what level of cable shielding (if any) will be required, and designing the cable so that the transmission of data, no matter what the distance between two points, is properly facilitated.
The base of an instrumentation cable usually consists of a black cable jacket, a set number of cores (according to the requirements of whomever has ordered the cable) and different colour codes for each cable. Most organisations who order instrumentation cables usually require a basic instrumentation cables with a few tweaks in order to make it suitable for their particular application.
This could involves a different colour cables jacket, different colours for the cores, or even a change in the number of cores housed inside the cables. Other changes could include the inclusion of screening or the printing of the companies name on the side of the cable. All of these changes are the responsibility of the cable designer.
Applications of Instrumentation Cables
Instrumentation cables are used in a variety of applications across different industries. Here are some common applications:
Process Control
Instrumentation cables are commonly used in process control applications to transmit signals from sensors, transmitters, and other instrumentation devices to control systems. These cables help ensure accurate and reliable measurements, ensuring the safety and efficiency of industrial processes.
Data Transmission
Instrumentation cables can also be used to transmit data, such as in computer networks or telecommunication systems. Shielded twisted pair cables are particularly useful for these applications as they help prevent signal interference.
Power Generation
Instrumentation cables are commonly used in power generation applications to monitor and control power plants. They help ensure that power plants operate safely and efficiently, minimizing downtime and reducing the risk of equipment failure.
Types of Instrumentation Cables
Instrumentation cables are essential components used in various industries such as chemical, petrochemical, oil and gas, and manufacturing. These cables are designed to transmit low-level signals from instrumentation devices to control systems.
Shielded Twisted Pair Cables (STP)
Shielded twisted pair cables are designed to reduce electromagnetic interference (EMI) and radio frequency interference (RFI) from other equipment. The cable consists of two insulated wires twisted together with an additional layer of insulation and a foil shield.
Unshielded Twisted Pair Cables (UTP)
Unshielded twisted pair cables are similar to shielded twisted pair cables, but without the additional layer of insulation and foil shield. They are commonly used in applications where EMI and RFI are not significant concerns.
Multi-Pair Cables
Multi-pair cables consist of several twisted pairs of wires, with each pair individually insulated and twisted. These cables are used in applications where multiple signals need to be transmitted simultaneously.
Coaxial Cables
Coaxial cables consist of a central conductor surrounded by a dielectric insulator, a braided shield, and an outer jacket. They are commonly used to transmit high-frequency signals with low signal loss.
Benefits of Using Instrumentation Cables and Wires
Based on the purpose of use and the type of electrical appliance or electrical system for which these cables are required, these cables have different features that make them very beneficial for use. Here are some of the major features of these useful cables.
These cable wires are highly used as cable wires to generate and allow the flow of high-speed signals. They are widely used in the internet connection supplying offices that require these cables to transfer high-speed internet connection signals for their customers. Instrumentation Cable Manufacturers produce such high-quality cables that can easily conduct the signals even at far distances.
These electrical cables are very safe for use. The coating materials that are used to cover and coat the multi coloured small wires do not allow the flow of high-power electricity through them and thus ensure the complete safety of the wire users.
The cores of these cable wires are made of different colours to identify the function of each of the wires. Each of the colours specifies a different function or feature that is required for the proper flow and supply of electricity and signals through the cable wires.
Each of the sub wires in these cables is shielded individually so that the flow of electricity through any of the sub-wires is not interrupted by the flow of electricity in the other. The sub-wires are generally shielded with thin copper drain wires that ensure the proper conduction and hence the continuous flow of electricity through the wires. The shielding of the sub-wires also prevents the shorting of any adjacent shield and thus minimizes the risk of cross-connection and ground loops.
The laid up triad or pair is always provided with an inner sheath that serves as an inner coating for the wire. The outer sheath is applied over the armoring.
What Are Some Tips For Selecting And Installing Instrumentation Cables And Connectors
Instrumentation cables and connectors are essential components of any measurement and control system. They carry signals from sensors, transmitters, and controllers to displays, recorders, and actuators. Choosing and installing them properly can be challenging, especially in harsh or noisy environments. Here are some tips to help you select and install instrumentation cables and connectors for optimal performance and reliability.
Before you buy or install any cable or connector, you need to know the specifications of the devices and the system. These include the type, size, length, and rating of the cable and connector, as well as the signal level, frequency, impedance, and shielding requirements. It's also important to consider environmental factors, such as temperature, humidity, vibration, corrosion, and electromagnetic interference. Make sure to select cables and connectors that meet or exceed the specifications for your application.
There are different types of cables and connectors for different purposes and standards. For example, twisted pair cables are commonly used for analog signals, while coaxial cables are suitable for high-frequency or digital signals. Similarly, there are various connectors, such as BNC, DIN, RCA, and terminal blocks, that have different features and compatibility. Choose the right type of cable and connector for your signal and device, and avoid mixing or mismatching them.
Once you have the right cables and connectors, follow the installation guidelines to ensure proper connection and signal quality. use the correct tools and techniques to strip, crimp, solder, or screw the cables and connectors without damaging or loosening the wires, pins, or terminals. Additionally, route the cables neatly and securely, avoiding sharp bends, kinks, or twists.
Use cable ties, clamps, or conduits to support and protect the cables. Furthermore, keep the cables away from sources of heat, moisture, or interference such as power lines, motors, or transformers. Shielded cables and grounded connectors can reduce noise and crosstalk. Lastly, label the cables and connectors clearly and consistently with color codes, tags, or markers. This will help you identify and troubleshoot them later.
After you install the cables and connectors, you need to test and verify the connections and the signal integrity. Use a multimeter, an oscilloscope, or a signal analyzer to measure the voltage, current, resistance, or frequency of the signal. You can also use a continuity tester, a cable tester, or a loop calibrator to check for any breaks, shorts, or faults in the cable or connector. If you find any problems, you need to fix them or replace the faulty components.
You need to maintain and inspect the cables and connectors regularly to prevent any degradation or failure. You can use a visual inspection, a cleaning, or a performance check to assess the condition of the cables and connectors. And in order to monitor and record the performance and status of the cables and connectors, you can implement a preventive maintenance schedule, a documentation system, or a fault detection system. And if you notice any signs of wear, corrosion, or damage, you need to repair or replace them as soon as possible.
We will walk you through the different factors that you should look for in their products. Besides, we will also cover other services they should offer a better customer experience.
Product Quality
For starters, aluminum or stranded copper is the principal conductor in instrument cables. Although copper is more cumbersome and denser than aluminum, it offers more conductivity. In contrast, aluminum conductors for instrument cables with equal conductivity tend to give a 1.6-time larger cross-sectional area than copper wire but are half the weight.
Using Conductors in Instrument Cables
You can coat a copper conductor can on the surface of a wire (typically made from lead, silver, nickel, or tin alloy). This is common to keep the insulation from adhering to the copper. This also helps prevent the copper from deteriorating at higher temperatures.The most commonly used materials are thermosetting or thermoplastic.
Every bunch of insulated conductors features a separate screen to shield it from interference caused by other conductors. Manufacturers usually use metallic or semi-metallic braid or tape screens.
A drain wire is associated with each screen to help screen termination.
Apply a final shield to all insulated conductor bundles to shield radiation, noise, and electrical interference from surrounding cables. Manufacturers often use metallic or semi-metallic braid or tape screens.
Manufacturers use a steel wire braid or armor to protect the conductor bundle mechanically. They also galvanize it to prevent rusting, while tinned copper or bronze phosphorus is a suitable substitute for steel armor.
The outer sheath goes over the armor to act as overall mechanical protection. This is usually a thermosetting or thermoplastic compound, often the same material as the bedding.The outer sheath features color-coding so that users can differentiate between instrumentation, HV, and LV cables. Other markings, such as length, are on the outer sheath.
They Should Also Offer
Your cable manufacturer should have a strategic position that allows them to provide better lead time and quick delivery.Compliance with environmental policies is crucial.Product standardization, so it’s easy for customers to compare different manufacturers and their products.
A reliable manufacturer should have advanced technology to develop durable and robust instrument cables.Seamless customer service by responding to queries and requests for more information
Information about their quality assurance certificate to avoid compliance issues later.You get added value from hiring high-quality pre-sales and post-sales service.
As a reliable instrument cable manufacturer,Can attest to meeting all your cable needs at an affordable price. We can customize your order based on special application requirements so you get the best performance possible.
Our Factory
Shandong Renhui Cable Co., Ltd. is founded in 2010, We are a professional cable manufacturer in China. Our products mainly cover low and medium voltage cable, PVC insulated cable, XLPE insulated cable, control cable, communication cable, rubber cable, mine cable, welding cable, ship cable, aerial bundled cable and other related customized cables. These cables are used in Power metallurgy, Oil&Chemical Industry, Power Station, Mine, Port and Architectural Engineering, and other fields.
FAQ
We're well-known as one of the leading instrumentation cables manufacturers and suppliers in China. If you're going to buy high quality instrumentation cables with competitive price, welcome to get more information from our factory.
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