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Introduction
Resistance temperature detector (RTD) cables act as the essential electrical means of transmitting temperature measurement signals from the resistance temperature detector to measurement instrumentation in industrial temperature monitoring systems. At Tempsens, we specialize in manufacturing RTD cable products that are designed to ensure the integrity of measurement signals in harsh industrial environments. With more than 35 years of experience in thermal engineering, we offer triad cable for RTD applications that minimizes lead wire resistance errors while preserving excellent quality of signal. Whether it is a steel furnace or a pharmaceutical process, your RTD sensors will provide you with reliable and accurate temperature measurements during the duration of the product lifecycle.
RFP-601
RFP-601 RTD Cable
FEP-Silicon insulated - 200°C
RFP-501
RFP-501 RTD Cable
FEP-Polyimide-Copper Screening-FEP insulated - 200°C
RFP-401
RFP-401 RTD Cable
FEP-Almyler Screen-FEP-SS Braiding insulated - 200°C
RFP-301
RFP-301 RTD Cable
FEP-Almyler Screen-FEP insulated
RFP-201
RFP-201 RTD Cable
FEP-FEP-SS Braiding insulated - 200°C
RFP-101
RFP-101 RTD Cable
FEP-FEP insulated - 200°C
RT-901
RT-901 RTD Cable
PTFE-Polyimide-Copper Screen-PTFE insulated - 260°C
RT-801
RT-801 RTD Cable
PTFE-PTFE-FG-SS Braiding insulated - 350°C
RT-701
RT-701 RTD Cable
PTFE-Almyler Screening-PTFE-SS Braiding insulated - 260°C
RT-601
RT-601 RTD Cable
PTFE-Almyler Screening-PTFE insulated - 260°C
RT-501
RT-501 3 Core RTD Cable
3 Core RTD Cable, Bare Copper, AWG 24/7/32, Stranded, PTFE-Silicon 200°C
RT-401
RT-401 RTD Cable
PTFE-FEP insulated - 200°C
RT-301
RT-301 RTD Cable
PTFE-PTFE-Copper Screening-PTFE - 260°C
RT-201
RT-201 RTD Cable
PTFE-PTFE-SS Braiding insulated - 260°C
RT-101
RT-101 RTD Cable
PTFE-PTFE insulated - 260°C
About RTD Cables
Specifications of RTD Cable
| Construction | Single/ Multi-Core |
|---|---|
| Voltage Grade | Up to 1.1 kV |
| Conductor | Electrolytic Grade Bare Copper/ Tinned Copper/ SPC/ NPC |
| Conductor Size | 0.50, 0.75, 1.0, 1.5 Sq. mm up to 48 triad |
| Conductor Stranding | Solid or Multi Strand |
| Core Insulation | PTFE, FEP, Silicon, PFA, PVC, PE, XLPE, LSZH Polymer, etc. |
| Screening | Aluminum Foil Type / Mesh Braided Type |
| Inner/Outer Sheath | PTFE, FEP, Silicon, PFA, PVC, LSZH Polymer, etc. |
| Armoring | G.I. Armouring/ SS Braiding (For High-Temperature Insulations) |
| Standards | As per BS 5308 Part 1 and Part 2, IS 1554, EN 50288-7, IS 7098, DIN 43760, JSS 51038 |
Applications of RTD Cable
- Steel and Metal Processing: Monitoring of high-temperature furnaces, temperatures during annealing, and molten metal temperature control.
- Petrochemical Refineries: Monitor distillation columns, temperatures in reactors, and process temperatures in pipeline.
- Power Generation: Monitoring of turbines, control of boiler feed systems, and steam temperature measurement.
- Semiconductor Fabrication: Control of process chamber temperatures, chemical vapor deposition systems, and wafer processing equipment.
Benefits of RTD Cable
- Securing Signal Integrity: An RTD cable with the appropriate design specifications will match the measurement with reduced electrical noise and control resistance changes for accurate readings.
- Environmental Protection: Our wide variety of `thermocouple` insulation provides protection from chemical attack, moisture, and mechanical destruction which provides sensor stabilization.
- Temperature Range Versatility: We offer cable solutions for applications in extreme temperatures from cryogenic to heated applications until 1200°C continuous service.
- Installation Error Reduction: Color-coded conductors and standardized configurations for wiring simplify wiring and limit field errors.
- Long Lasting Reliability: Higher performance insulation will hold its properties longer than basic insulation and ensure a longer time frame for reliable sensor operation.
- Flexible Configuration Options: Available in either 2-wire, 3-wire, and 4-wire configurations to suit measurement accuracy.
Why Choose Tempsens?
- Decades of Thermal Expertise: For over thirty years we have addressed difficult challenges related to temperature measurement in steel, cement, power, and chemical industries.
- Custom Cable Solutions: We manufacture application configurations which are specific to an application including armored constructions, custom lengths and unique termination options.
- Comprehensive Quality Testing: Every cable goes through a procedure for testing before it is shipped and all cables are tested in regards to insulation resistance, dielectric strength and conductor continuity.
FAQ
Frequently Asked Questions
Find answers to frequently asked questions related to RTD Cables.
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.
