Mineral Insulated Metal Sheathed Cable (MIMS Cables)

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.

By initiating radioactive decay of the emitter material in the reactor’s core, neutrons create an electric current proportional to the neutron flux; therefore, there is no external power supply required.

SPNDs feature a compact design, are self-powered and stable under extreme reactor conditions, and provide linear and reproducible flux signals in real time for reactor regulation, as well as for precise flux mapping 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.

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.