ABOUT
Coaxial / Triaxial Cables
Introduction
Mineral Insulated (MI) coaxial cables and triaxial cables are among the most dependable, accurate, and long-lasting cables used in essential industries where potential failure poses an unacceptable danger to operations. Mineral Insulated (MI) cables can withstand a wide range of conditions, including severe temperatures, radiation, vibration, and corrosive environments, while transmitting electrical information reliably.
About Coaxial / Triaxial Cables
A coaxial cable has a central conductive element surrounded by insulation material, a conductive shield and finally an outer protective layer. Mineral insulated coaxial cables with compacted MgO insulation are made by Tempsens. The compacted MgO insulation provides better thermal stability and dielectric property characteristics than traditional insulating materials used in the manufacturing of conventional coaxial cables.
Triaxial cables utilize an additional insulating layer and secondary conductive sheath beyond the original coaxial design; this structure produces a three layer conductor arrangement, which offers improved interference rejection and bandwidth capacity. Both types of cable maintain a constant characteristic impedance through the entirety of the cable, providing both reduced interference and greater signal integrity when used in high electrical noise environments commonly experienced in industry settings.
Coaxial Cable
Coaxial MI Cables are built to transmit signals with high integrity thanks to excellent electromagnetic shielding
Triaxial Cable
Triaxial MI Cables are manufactured for the most accurate measurement applications, where the slightest signal loss or noise is unacceptable. Guaranteed Conductor Technology reduces leakage current and interference.
Coaxial Cable Features:
- Coaxial Cable is characterized by controlled impedance of 50Q or 75Q, which ensures stable performance.
- Coaxial Cable provides excellent EMI/noise protection.
- Coaxial Cable can withstand high mechanical and vibration stresses.
- Co-axial Cable provides long-term stability for high temperature conditions.
Triaxial Cable Features:
- Triaxial Cable has ultra-low levels of electrical noise with exceptional accuracy.
- Controlling the leakage current from Triaxial Cables is very important.
- Triaxial Cables are most suitable for precise and sensitive measurements.
- Triaxial Cables were proven to perform well under nuclear and radiological conditions.
Applications of Coaxial Cable:
- High Temperature Equipment
- Sensing Devices at Power / Nuclear Power Stations
- Radio Frequency (RF) and Detected Signals
- Thermocouple-Based Control Systems.
Applications of Tri-Axial Cable:
- Monitoring Devices for Nuclear Reactors
- Ionisation Chambers
- Neutron & Gamma Radiation Detection
- Research-based Studies or Accurate Monitoring Systems.
FAQ
Frequently Asked Questions
Find answers to frequently asked questions related to Coaxial / Triaxial Cables.
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.
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.
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.
