thermo-control Körtvélyessy GmbH

Since 1983, we have been manufacturing drift-free Platinum-Rhodium – Platinum thermocouples and oxygen probes. Be convinced by our product range and learn everything about the company.

As a lean company, we can achieve delivery times that often amaze and delight our satisfied customers. We can meet our standard delivery time of 2-3 days for newly built products 95% of the time. Test us and send your inquiry .

Thermocouples Thermocouples
  • The guarantee for high process reliability
  • Up to 4 years warranty for Type S
  • Separate empty tube for test measurements
  • Complies with AMS 2750 up to Secondary Standard
Oxygen Probes Oxygen Probes
  • Highly accurate reproduction of the Nernst voltage
  • Fully ceramic design
  • Temperature range 480 °C to 1300 °C
  • Without external reference air supply
Test Thermocouples Test Thermocouples
  • Suitable for all thermo-control thermocouples
  • Standard lengths 400 mm to 1500 mm
  • Calibration certificate according to AMS-2750 available
  • Recommended recalibration interval 10 years
Sheathed Thermocouples Mineral insulated thermocouples
  • Standard with one or two thermocouples
  • Thermocouples of Type J, K, N with metallic sheath
  • Thermocouple of Type S, R, and B with platinum-rhodium sheath
  • Various configurations available
Feedthroughs Feedthroughs
  • Permanently installed cables
  • Replaceable cables
  • For various flanges
  • Various configurations available
Thermoplugs according to DIN 50212 Thermocouple connectors
  • According to DIN 50212 Type A (Standard) or B (Miniature)
  • Housing selection from 220 °C to 650 °C continuous load
  • Design with 2 or 3 contacts
  • Marking according to IEC or ANSI colors
Accessories for our products Accessories
  • Thermocouple connectors
  • Process connections and adapters
  • Air supply units
  • Isolation amplifiers
TE_iD Product Data TE_iD Product Data
  • Product data available 24/7
  • Calibration data optionally available
  • Calibration certificates as scanned documents
testWare Device Testing testWare Device Test Management
  • Planning and execution of device tests
  • Flexible representation of operations and tests
  • Object-oriented device structure
  • OpenSource for easy integration

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dated 16.11.2023

HK-SI 2023 Thank you for your visit

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dated 16.10.2022

HK-SI 2022 Thank you for your visit

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3 days go by so quickly. We would like to thank our visitors for the good conversations.

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Drift-Free Thermocouples

The thermo-control Körtvélyessy GmbH designs and manufactures high-quality PtRh – Pt thermocouples. The patented design provides outstanding properties in precision, lifespan, and reliability. A distinctive feature is the use of different diameters of the thermocouple wires. This compensates for the temperature-related drift of the individual wires. The result is a thermocouple that will never drift!

Representation of the voltage curves with the same thickness of thermocouple wires and the formation of drift
ΔT New ΔT 1. Year ΔT 2. Year ΔT 3. Year
Positive wire (PtRh10%) +0,0K +1,0K +1,5K +2,0K
Negative wire (Pt) +0,0K +5,0K +8,0K +10,0K
ΔT = Drift = Positive - Negative 0,0K -4,0K -6,5K -8,0K
Results of a measurement at 1240°C with type S of 2 x Ø 0.5 mm thermocouple wires
Representation of the voltage curves with different thickness of thermocouple wires and the elimination of drift
ΔT New ΔT 1. Year ΔT 2. Year ΔT 3. Year
Positive wire (PtRh10%) +0,0K +1,0K +1,5K +2,0K
Negative wire (Pt) +0,0K +1,0K +1,5K +2,0K
ΔT = Drift = Positive – Negative 0,0K 0,0K 0,0K 0,0K
Result of measurement at 1240 °C with type S
of Ø 0.35 positive and Ø0.5 mm negative thermocouple wires

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