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Mineral Insulated Probes

What is a Mineral Insulated Probe?

Mineral insulated probes are made from mineral insulated metal sheathed cable (frequently called MIMS cable). It has a metallic sheath and on the inside, the conductors are insulated with densely packed magnesium oxide. This construction bears a lot of advantages for temperature sensors. Mineral insulated probes are often referred to as sheathed temperature sensors.

Characteristics of Sheathed Probes

A sheathed thermocouple has an extremely wide temperature range: from below -200 °C up to more than 1,100 °C. Furthermore, sheathed thermocouples and RTD are resistant to vibration and scratches which proves their longevity. At the same time, they are bendable. Surprisingly, they are affordable as well: MI cable costs about the same as fiberglass cable. We manufacture MI probes in diameters from 0.25 mm up to 20 mm. To ensure maximum water tightness, we mould either a connector or a robust cable transition onto the probe.

Mineral insulated thermocouple and mineral insulated RTD are highly flexible and at the same time robust probes. Also called sheathed thermocouple or sheathed RTD, they are made from mineral insulated metal sheathed cable (mims) and can bear high temperatures and mechanical conditions

Sheathed Thermocouples and RTD

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Mineral insulated RTDs

Mineral insulated temperature probe with overmoulded M12 connector. Available as Pt100 and Pt1000.

Mineral insulated RTD probe with overmoulded M12 connector (IP67)

Series: TRMSTD
Measuring range: -50 to 500 °C
Sensor: Pt100 or Pt1000
Connection: M12 connector
Mineral insulated temperature probe with overmoulded transition. Available as Pt100 and Pt1000.

Mineral insulated RTD probe with overmoulded cable transition

Series: TRECOSTP
Measuring range: -50 to 500 °C
Sensor: Pt100 or Pt1000
Connection: cable transition
Mineral insulated temperature probe with overmoulded M8 connector. Available as Pt100 and Pt1000.

Mineral insulated RTD probe with overmoulded M8 connector (IP67)

Series: TRSV8
Measuring range: -50 to 500 °C
Sensor: Pt100, Pt1000 or NTC
Connection: M8 connector

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Paola Bagatta <br>

Paola Bagatta

Mineral insulated thermocouples

Mineral insulated K type thermocouple with overmoulded standard connector. Bendable and robust.

Mineral insulated thermocouple, overmoulded standard connector

Series: TCM
Measuring range: up to 1,150 °C
Sensor: Type K or Type J
Connection: compensated standard
Mineral insulated K type miniature thermocouple with overmolded miniature connector. Bendable design

Mineral insulated thermocouple, overmoulded miniature connector

Series: TCOSTD
Measuring range: up to 1,150 °C
Sensor: Type K or Type J
Connection: overmoulded miniature
Mineral insulated K type thermocouple with overmoulded cable transition. Bendable and robust design

Mineral insulated thermocouple, overmoulded cable transition

Series: TCEPAK
Measuring range: up to 1,150 °C
Sensor: Type K or Type J
Connection: compensated transition

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Paola Bagatta <br>

Paola Bagatta

A K Type Thermocouple made from mineral insulated cable with an overmoulded black M12 connector

Mineral insulated thermocouple, overmoulded M12 connector

Series: TCSV12
Measuring range: up to 1,150 °C
Sensor: Type K or Type J
Connection: compensated M12
Mineral insulated K type thermocouple with overmoulded M8 connector. Bendable and robust design

Mineral insulated thermocouple, overmoulded M8 connector

Series: TCSV8
Measuring range: up to 1,150 °C
Sensor: Type K or Type J
Connection: compensated M8
Special J type thermocouple for hot runner systems with high temperature resistant cable transition

Mineral insulated thermo-couple, high temp and high pull strength transition

Series: TCTX
Measuring range: up to 600 °C
Sensor: Type J
Connection: compensated

Integrated transmitters

Our MIMS RTD probes are also available with 4-20 mA and 0-10 V output signals. These outputs offer you more flexibility and are less susceptible to interference.

By the way: now also available as MODBUS temperature sensor!

Four different versions of Italcoppie's evo temperature transmitters on a white background

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Fill out the form and we will get back to you within two business days. Or simply give us a call right away!

Contacts

Paola Bagatta <br>

Paola Bagatta

Frequently asked questions about mineral insulated probes

Many of our customers have already been able to make their lives easier with our sheathed probes. They have reduced the number of variants and thus save a lot of time in procurement and supply chain coordination.

Sheathed probes are extremely versatile. With our extensive range of accessories for the sheathed probes, you can mount the probe right to your preference. Sensor tip adapters, bayonet fittings, compression fittings and pressure springs are just a few examples.

With the help of our accessories, you can use the sheathed probe for pretty much any measurement. Also, a unique advantage of MIMS cable based probes is that they are bendable, which provides additional flexibility.

Sheathed probes are robust and – depending on the sensing element – can be used in an extremely wide temperature range from -200 up to 1,150 °C.

We manufacture our mineral insulated probes as RTD, NTC and thermocouple.

A Pt100 or Pt1000 is well suited for precise measurement in a wide temperature range. Depending on the cable length, a three- or four-wire circuit may be required here.

An NTC sheath sensor comes into question when the temperature range to be measured is comparatively small – outside this “comfort zone” its resolution is useless. For this, it is usually the cheapest choice.

A sheathed thermocouple is the best solution when the temperatures rise well above 500 °C. In some applications, however, thermocouples are also used at lower temperatures.

Regarding the response time of a sensor, the following rule of thumb applies: If you double the diameter, you quadruple the response time. So choose the diameter carefully!

Using a small-diameter probe together with a probe tip adapter is often a good choice for a sheathed probe. Here, by the way, the price also increases with increasing diameter.

As with all temperature sensors, the immersion length should be at least 5 times the diameter of the sensor to avoid thermal bridges.