Miniature Sheath Thermocouple with Cable and Standard Connector
Mineral-insulated miniature sheathed thermocouples with thermal conductors and standard connectors (round contacts) offer exceptionally fast response times (for a diameter of 0.5 mm, the response time for direct heat transfer is approximately 25 ms—for 0.25 mm, it is only 7 ms). These robust yet exceptionally thin miniature sheathed thermocouples are primarily used in analytical and medical technology, laboratories, and nanotechnology, as well as for temperature measurement in seals, gaps, and boreholes.
The standard connector offers exceptional durability.
Thanks to the thermal conduit, which is connected via a brass or stainless steel adapter sleeve, even greater distances between the actual temperature measurement point and the data acquisition unit can be bridged.
The thermal cable is flexible and, unlike compensating cables, is made of the same material combination as the inner conductors of the mineral-insulated sheathed cable. Depending on the sheath insulation, they provide accurate readings in a temperature range up to 300 °C; for glass-silk-insulated thermal cables, this range extends to 350 °C.
The transition sleeve, which protects the transition from the mineral-insulated sheathed cable to the thermocouple cable, is encapsulated to be moisture-tight. It also serves as strain relief for the connected thermocouple inside.
Sheathed cable in accordance with IEC EN 61515, thermocouple (inner conductors) in accordance with IEC EN 60584-1, temperature sensor cable in accordance with IEC EN 60584-3. The flexible, mineral-insulated sheathed cable protects the inner conductors from environmental influences and mechanical stress.
Operating temperature of the measuring point: -200 to +1,300 °C, depending on the selected thermocouple type and the diameter of the sheathed cable.
We can manufacture your miniature sheathed thermocouple with a sensor length (mineral-insulated section) ranging from a few millimeters to 10 meters.
This model is available with either a standard plug or a standard socket, as desired. The plug contacts are round and always match the thermocouple type (e.g., Type K) of the selected sheathed thermocouple.
Available with a plastic connector (200 °C) or a ceramic connector (600 °C), as needed.
The potting compound in the transition sleeve (where the mineral-insulated sheathed cable transitions to the thermal cable) has a standard continuous temperature resistance of up to 180 °C. However, upon request, a potting compound suitable for continuous use up to 260 °C can also be used— if you would like this change, please let us know in the comments field.
Available in types K, J*, N*, E*, and T*.
*only for Ø 0.5 mm
Available as a single thermocouple.
Class 2 (standard); Class 1 available upon request.
Measurement point type: insulated, welded to the sheath , or exposed
Selectable sheath diameter: Ø 0.25 mm – 0.5 mm
Other models and jacket materials are available upon request.
| Type | Type K, Type J, Type N, Type E, Type T |
|---|---|
| Sheath diameter | 0.25 mm, 0.34 mm, 0.5 mm |
| Sheath material | Inconel 600, stainless steel |
| Execution measuring point | insulated, jacketed, exposed |
| Thermal cable type | Silicone-insulated temperature probe (200°C), PTFE/PFA-insulated temperature probe (250°C), PTFE/PFA-insulated thermal cable, shielded (250°C), Kapton-insulated thermal cable (300°C), glass fiber-insulated thermal cable (350°C), glass fiber-insulated thermal cable, shielded (350°C), Other versions (please specify in the comments field) |
| Connection | Round-contact plug, round-contact socket, round-contact plug (ceramic), round-contact socket (ceramic) |
Your Configuration
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Questions about making the right choice?
Do you need help configuring your thermocouple? Are you unsure which model is right for your application? Heiko Gevert and the entire team look forward to assisting you.
You can buy thermocouples anywhere, but you'll only find the right one from an expert.
10 Reasons Why We're the Right Choice for Your Project:
If you need even more precision
The highest standard according to DIN EN 60548 is our minimum requirement when it comes to the quality of our sheathed thermocouples. And if your requirements for the precision of our products and solutions are even higher, our value-added services make all the difference.
If the accuracy of the measurement is important, we calibrate our mineral-insulated sheathed thermocouples using the fixed point or comparison method. This allows deviations within the standard to be determined precisely. Especially when several measuring points are present in applications, it can be important to know the exact deviation of the individual thermocouples. Accordingly, we offer factory calibration as well as DAkkS calibration.
X-ray inspection is a non-destructive and highly precise method for examining and verifying the properties and integrity of materials. This imaging technique can be used to identify defects in installed sheathed thermocouples or heating elements. It is also used, for example, to precisely determine the measurement point, ensuring that the sheathed thermocouple can be installed accurately. Upon request, we are happy to provide our thermocouples with X-ray images, including dimensions and labeling.
The helium leak test is primarily used for components that are used for an application or in a production process that takes place in a vacuum or ultra-high vacuum (UHV). In order to avoid pressure loss in the application, we test welds and screw connections on our sheath thermocouples or heating applications in advance. On request, we can also supply vacuum-compatible products, including a test report, which are ready for immediate use on site.
