Specialised Cables

A Type K thermocouple’s positive leg is composed of Chromel (90% Nickel and 10% Chromium). The negative leg is made of Alumel (approximately 95% Nickel with Aluminium, Manganese and Silicon) and can be utilized between -200°C and +1260°C.

Triaxial cables have a shield conductor and insulator in addition to the coaxial cable structure that provides greater noise rejection by common mode as well as eliminating ground loops in sensitive measurement applications.

Yes, triaxial cables generally have a higher price than coaxial through additional layers of conductors, insulators, and complex manufacturing equipment required to produce them. However, if you are utilizing precision instrumentation applications, the pricing is justifiable because of the increased performance that they provide.

Standard types include RG-series flexible cables, semi-rigid cables, and hardline cables. Tempsens specializes in mineral insulated metal sheathed coaxial cables offering superior performance in extreme temperature and harsh environment applications.

Triaxial cable is a key component of electrometer-based measurement applications configured using triaxial cable. It is also used for measuring picoampere currents, capacitance measurements, and for electrochemical testing applications because it can prevent ground loop interference and leakage currents.

The word “coaxial cable” is sometimes known as “coax”. Mineral-insulated coaxial cable has been referred to by other names such as MI coax; and MIMS (mineral-insulated metal-sheathed coaxial cable) in more specialized applications.

When making low-level signal measurements (nanoamp to picoamp), when performing electrochemistry, when making capacitance measurements, or when there are ground loops that cause interference where normal coaxial cable shields do not eliminate.

Both types of cables can operate over similar distances; however, triaxial cables will provide a superior level of signal integrity when used in electrically noisy areas and will experience lower capacitance loading effects because of their better common mode rejection capabilities compared to coaxial cables at longer distances.

Yes, triaxial cables generally have a higher price than coaxial through additional layers of conductors, insulators, and complex manufacturing equipment required to produce them. However, if you are utilizing precision instrumentation applications, the pricing is justifiable because of the increased performance that they provide.

Coaxial cables transmit both AC and DC signals. Tempsens mineral insulated coaxial cables are rated for DC applications and AC frequencies from near-DC to several GHz depending on construction and impedance specifications.

The word “coaxial cable” is sometimes known as “coax”. Mineral-insulated coaxial cable has been referred to by other names such as MI coax; and MIMS (mineral-insulated metal-sheathed coaxial cable) in more specialized applications.

Neutrons excite the material of the emitter located within the reactor core, producing an output of electricity that is directly proportional to the neutron density, with no need for an external power source to produce the signal.

Some of the principal benefits of SPNDs include their compact, self-contained operation producing linear, real-time flux measurements to control and map the operation of reactors. Thus, they require very little continual maintenance at high-maintenance nuclear sites.

Digital linear heat sensing cables can be found in almost all of the oil and gas production and storage facilities in the United Arab Emirates. They may also be utilized within petrochemicals, warehouse facilities, tunnels, and cable trays at power production plants and manufacturing facilities where there is need for both continuous temperature monitoring and early fire detection.

Absolutely. Tempsens digital linear heat detection cables are designed for extreme environments, rated at an ambient temperature range of -63°C to 40°C. The cables include an advanced thermal polymer insulation system, along with a tough tri-metallic core that will handle the humidity, heat, and other harsh conditions of ďa highly industrialised environment like that found in the UAE.

The UAE has companies that install DC cabling to connect solar panels on rooftops, ground mounts, and at solar thermal plants and storage facilities. There are also many operational projects in other emirates (e.g., DEWA).

Yes. DC cabling in Tempsens is able to cope with extreme ambient temperature (+90°C) and conductor temperatures (+120°C). They are also designed ＆ constructed with UV and ozone resistant properties that are typical of extreme hot months in GCC (Gulf Cooperation Council) countries (e.g., UAE).

Use our DC PV Wire sizing table for the panel wattage, string current, and distance, while also factoring in the UAE Ambient air temperature derating factors to maximize performance.

In the United Arab Emirates, lead and hookup wire types are used in the oil and gas industry, petrochemical plants, power generation facilities, manufacturing, HVAC systems, as well as industrial automation. They are necessary to connect instruments to control panels and electrical devices used in extreme Gulf climate conditions.

Yes, all Tempsens linear heat detecting cables are only manufactured for industries with hot working atmospheres due to their heatistor rating of 105 C (up to that temperature). Therefore they can be utilized in the diverse climates (extreme ambient) of country; particularly in various industrial plants (ie, refineries/storage tanks).

Tempsens linear heat detection (LHD) cables exceed all applicable International Fire Safety and electrical codes from the Gulf region. All of our products have been thoroughly tested for compliance with all regional referring to 1.1 kV insulating performance.

To select the best type of wire for your specific application in the UAE, the following information will assist in determining which would be the best options based on temperature extremes, run lengths of the required wire (to be used for detection), whether the installation will be outside or inside and whether or not there is any hazardous material to be detected by the product being installed. It's important to contact the Temperatures Sens technical support team about any customized options that may suit your particular needs.

Through authorized distributors and service partners across the U.A.E. at Tempsens we provide full technical and service support to our customers. We have all replacement parts, spare cables, and the ability to assist technically, as needed to minimize down-time and ensure reliable operation of their systems.

LV Power Cables Are Widely Used Across The U.A.E. In Commercial Towers, Industrial Facilities, Oil And Gas Facilities, Metro Systems, Desalination Plants, And Infrastructure Projects For Reliable Power Transmission Up To 1.1 Kvolt.

Yes, Tempsens LV Power Cables Utilize XLPE And H.R. PVC Insulation Rated Up To 90°c That Can Withstand The UAE's Very High Ambients Temperature And The Saudi Desert'S Very Harsh Conditions And Will Still Provide Excellent Electrical Performance During Their Life Span.

Tempsens LV Power Cables have been manufactured in accordance with the IEC 60227 and IEC 60502-1 globally recognised standards. In addition, they hold several other certification that meets the electrical installation and safety requirements of the Gulf Region.

Armoured LV cables, whether using G.I. Round Wire or Flat Strip Protection, plus an outer PVC/LSZH Sheath, are designed to be installed outdoors and/or underground with protection from water and mechanical damage.

When High Temperature Cables are used in the UAE they usually operate in an ambient temperature range of -40C to +90C but the conductor operating temperature can be as high as 1200C. Because of this very high operating temperature they will be used in not only very high ambient temperatures but also the extreme temperatures that are associated with the industrial processing of products from desert sand.

PTFE, FEP, silicone, and fiberglass-insulated cables are the best options for high-temperature applications in refineries, petrochemical plants, and floating facilities by using oil, chemicals, and flame-resistant materials for high-temperature applications above 260° Celsius.

The conductor materials for high temperature cables are selected from among annealed bare copper, tinned copper, silver plated copper, nickel plated copper, pure nickel, and NPC 27% alloy based on the temperature and performance of the application.

Operating temperature, voltage grade, conductor size, environmental factors, chemical exposure, degree of flexibility required and relevant standards must all be taken into consideration when selecting a high temperature cable. Refer to the manufacturer’s specifications for assistance in making the best selection.

Heat resistant cables should be chosen based on maximum operating temperature, voltage requirement, conductor size based on current load and environmental exposure (chemicals).

A heat-resistant cable can endure continuous high-temperature service (between 200°C - 800°C) whereas Fire Resistant Cables keep circuit integrity during a fire at "normal" temperatures.

Tempsens cables are designed for continuous use and have a service life of more than 20+ years when installed correctly and within the rated parameters provided by IS 8130.

There are several types of insulation used, and each type will determine how flexible (or stiff) the cable is. For example, Silicone and FEP insulations are very flexible, whereas fiberglass and ceramic fiber insulation provide average flexibility based on the application's needs.

Yes, instrument signal cables constructed using armoured construction and high corrosion resistance at rated voltages along with Marine Insulation materials designed specifically for use in an offshore environment, as the exposure of these cables to harsh environments such as saltwater is ongoing.

Industries in the UAE that utilise Instrumentation Signal Cables include Oil and Gas Refineries, Petrochemical Plants, Power Plants, Building Automation Systems, Water Treatment Facilities and as well as Manufacturing Units used in many applications where a reliable means of process control or monitoring is required.

Instrument signal cables use bare copper conductors or tinned copper conductors that have cross section areas of between 0.50 square millimetres to 2.50 square millimetres. These conductor materials and sizes give optimal conductivity and reasoning for flexibility for use in a wide range of signal transmission requirements within an Arc welding and industrial instrumentation application.

Typical RTD cabling is made of copper conductors with insulation made from materials that vary based on operating temperature (e.g., PVC is used for most applications up to 105°C, PTFE or FEP cable for temperatures up to 260°C, and insulated with fiberglass for severe environments up to 600°C).

Triad cable for RTD applications has three cores twisted together, minimizing electromagnetic interference and maintaining balanced electrical characteristics between the three-wire configuration. This is necessary to balance lead wire resistance for measurement accuracy.

The RTD cable length limitation can be different depending on the wire size used, and the wiring configuration for the measurement circuit. Typically, the maximum distance for a standard installation would be around 300 meters when utilizing 20 – 22 AWG conductors in 3-wire configuration. For a 4-wire RTD connection the distance can be increased to 600 meters with no loss of accuracy.

FEP cable insulation has great chemical resistance, has a continuous operating range from -65°C to +200°C, retains excellent dielectric properties throughout its operating range, and is far more moisture resistant than standard polymer insulations.

FEP insulated cable provides almost identical chemical and thermal resistance properties of a PTFE insulated cable but is easier to process when extruded with conventional processes providing a more consistent wall thickness while also having enhanced mechanical properties at a much lower cost.

FEP cable can be installed as continuous operating at -65°C to +200°C, with the possibility for short excursions to 260°C. FEP cable is suitable for most industrial RTD applications – with the exception of the highest furnace and combustion monitoring applications.

PVC insulated cable will operate reliably from -40°C to +105°C for standard formulations of PVC insulated cable. For heat-resistant PVC compounds, the continuous operating temperature can be extended to 120°C for short durations. This temperature range is suitable for most ambient and moderate temperature RTD installations.

XLPE is cross-linked polyethylene insulated cables which provide greater temperature capability (up to 150°C continuous) than PVC insulated options and greatly improve aging resistance, but PVC insulated will be more cost-effective as a general use under temperature of 105°C.

Fiberglass insulated cable provides excellent abuse resistance with its woven glass fiber construction. Fiberglass insulated cables can provide resistance to mechanical stress, flexing, and contact with surfaces that would have damaged polymer insulations. This feature allows it to be used for furnace applications and in industrial environments with extreme temperature applications.

The selection of an MI heating cable depends on many parameters, which include the operating temperature, required heat output, available voltage, compatibility with the sheath material, and hazardous area classification. Tempsens’ engineers will analyse these parameters and help you choose the best specifications.

Use of an infrared thermometer to inspect the cable condition and occasional insulation resistance testing is usually adequate for MI heating cable because of the robust design and sealed construction.

Your MI cable will be installed directly on the surface using recommended mounting methods, covered with thermal insulation, and terminated using the special termination kits connecting the MI cable to the power supplies requiring temperature controls.

MC Cable is polymer-insulated and allows for electrical distribution; MI cable is a mineral-insulated heating cable, allowing installation in extreme temperature environments.

MI cables can withstand extreme temperatures, up to 1000°C; the cable is completely moisture proof, has better mechanical strength, has a small outer diameter, which allows for better heat distribution, and can be utilised in hazardous locations.

Fire-retardant cables resist initial ignition and slow the spread of flames. Fire-resistant cables are designed to stay functional for limited time periods during a fire event. Fire survival cables are designed to ensure full circuit integrity at temperatures exceeding 750°C for 30-180 minutes, thereby keeping essential emergency safety systems operational throughout and subsequent to varying emergency fire events.

Installation must account for minimum bending radius (6-8 times cable diameter), use of fire resistant/cable retention fixings, adequate segregation away from other cables, fire rated terminations with cable duration rating, and qualified installation per BS 7671 regulation in order not to compromise fire survival integrity.

Temperature limits depend on sheath material: SS316L/Inconel 600 to 800°C, SS446 to 1150°C, Pt10%Rh to 1300°C.

Resistance is maintained above 100 MΩ with high-purity MgO (≥99.4%) owing to its compressed crystalline structure as warranted by ASTM E839 testing.

Yes, bend radius must be a minimum of 2x the diameter; exposed ends must be resealed against moisture ingress immediately.

Metal sheathing provides mechanical protection and seals from environmental influences; MgO insulation electrically separates the conductors.

Yes, all thermocouple cables are provided with certificates with EMF values tested in accordance with ANSI MC 96.1; IEC 584-2; and ASTM E230.

MIMS cables should be stored in dry environments and factory end seals should remain intact, if a cut ends occurs then resealed immediately to protect hygroscopic MgO from moisture penetration.

LV cables are used in voltages up to a given limit of 1.1 kV; they send control signals or power to operate equipment. HV (high voltage) cables will operate at voltages above a given limit (generally above 1 kV but typically in the 11 kV-132 kV range or above), and are used to move bulk/power with increased insulation thickness and dielectric strength requirements.

LV cables generally work with identifiers from voltages of 50V to 1100V (1.1 kV); specifically, Tempsens control cables are built for a continuous rating of 1100 V as determined by the IEC 60502-1 and IS 1554 standards.

Choosing LV cable size requires calculations of the load current (using I = P/V), applying derating factors based on ambient temperature and installation method, identifying a permissible voltage drop (as a percent of the system voltage) that meets the voltage drop limits (which in practice means, it’s usually limited to below 3-5%). It’s also necessary to check a cable’s ability to withstand short circuit events, reference IEC 60228 conductor standards.

The minimum distance between HV and LV cables is commonly specified to be greater than 300 mm for unscreened cables or greater than 150 mm with a physical barrier present. All individual installations must ensure those minimum separations (or applicable separation distances) conform to local electrical codes as well as IEEE and IEC segregation guidelines to minimize interference concerns, and any overall safety concerns. 

Standard thermocouples have a 2-wire or (Positive and Negative Leg) configuration; the 3-wire adds the ground wire providing shielding and safety in electrically-noisy environments, but again, Thermocouples operate 2-wire inherently unlike the RTD style of temperature sensing.

Thermocouple cables can reach lengths of 300-500 meters depending on the gauge of wire and the electromagnetic interference (EMI) in the environment; anything beyond that, it is recommended to utilize signal amplifiers or signal transmitters to prevent noise related errors and to maintain an accurate measurement.

The temperature rating of the thermocouple cable varies based on insulation type.  PVC insulation can be rated in the range of -20°C to +105°C, while fiberglass braided cable can be continuous up to 400°C. Silicone rubber feeling can maintain -60 Celsius to +180 °C, while Teflon insulation can operate applications down to -200 Celsius to up to 260 Celsius.

Nickel alloy is defined as using pure nickel with stainless steel which includes chromium, copper or iron added for specific performance properties such as corrosion resistant or for high-temperature capability.

Nickel alloy has superior corrosion resistant and high-temperature capability compared to stainless steel, which is a requirement for extreme industrial conditions in the Gulf.

Through self-registering cables, constant wattage systems and mineral insulated cables that will maintain the required temperature.

Self-regulating (LTSRH, MTSRH, HTSRH series), constant wattage parallel (CWPHT), series resistance (CWSHT) and mineral insulated (MIHT) systems.

Maintains process temperatures, prevents freeze damage, promotes consistent product flow, compaction and protects equipment against extreme temperatures in the industrial process.

MI cable is a sheathed Thermocouple Cable, having an outer sheath of metal with Two to Eight Cores where positive and negative thermo elements run around Circular Pattern, embedded in MgO. Mineral Insulated Cables are suitable to high Mechanical, Chemical, and Electrical stability. Due to good Flexibility, Excellent mechanical strength, and pressure resistance, mineral insulated Thermocouples/RTD’s can be installed in complex installations.

Construction:

• One or more wire like conductors (cores) are embedded in a high insulation quality MgO(Magnesium Oxide) and pressed into a metal tube (sheath) made of oxidation and corrosion resistant material. The entire combination is then processed using suitable forming steps to obtain the final dimensions.

Compensating cable is made of alloys which are different from those of thermocouples but have the same output over a limited temperature range. Compensating cable is a connector between thermocouple and measuring instruments, these cables are less precise, but cheaper. They harness quite different relatively low cost alloy conductor materials, whose net thermocouple in question. The combination develops similar output as those of the thermocouple, but the operating temperature range has to be restricted to keep miss-match error acceptably small.

MI Cables cover up the wide area of applications. Important are listed below:

• In Chemical, Petrochemical and fertilizer industries, and as equipment in dairy, food processing, pharmaceutical industries, in hospitals, households as kitchenware, cryogenic vessels and as heat exchanger in air conditioning refrigeration, for machinery in paper, pulp and textile beverage sector.
• Architectural trims, Marine exteriors, chemical processing equipment, food processing equipment, petroleum refining equipment, photographic equipment.
• Nuclear power and reactor construction, chemical apparatus engineering, annealing furnaces, heat exchangers, crude oil industry, grease and soap industry, aircraft exhaust stacks and manifolds, pressure vessels, large mufflers for diesel engines, carburetors, expansion bellows, stack liners, fire walls etc.
• Power technology, recuperates, heat treatment kilns, vortex firing installations, waste incinerators, furnace construction, boilers and blast furnaces, PWR, Space Travel.

Extension cable uses wire of nominally the same conductor as the thermocouple itself, which thus inherently possess similar thermo power characteristics, and with no connection problems. Miss-match error arising from high connecting box temperature is likely to be relatively small. These cable are less costly then thermocouple wire, although not cheap, and are usually produced in a convenient form for carrying over long distance typically as flexible wiring or multi-core cables.They are recommended for best accuracy.