We offer a wide range of accessories and consumables for our products. These include standard components such as connectors or cables. But production according to customer requirements is also possible.

Please send us your inquiry.

Download catalog

Download the accessories catalog as a PDF!

Compensating and thermocouple cables


The voltage of the thermocouples is defined at the zero point. Therefore, thermocouples must not be connected to a normal voltage cable made of copper. This would lead to measurement errors. Consequently, special cables must be used for thermocouples. These are usually called compensating cables.

Their thermoelectric voltage is identical to that of the connected thermocouple up to ~200 °C. For ranges above 200 °C, the original alloys of the thermocouples should be used wherever possible.

It is important to know that the materials of the cables, as with the thermocouple, are different. Therefore, the correct polarity must be ensured. To make things easier, the insulation layers are made in the same color as the thermocouples.

Sheath materials

Thanks to modern electronics, the resistance of the cable is insignificant. Therefore, requirements for the cross-section are practically non-existent. Common cross-sections are 0.22 mm² or 0.5 mm².

The structure of the insulation follows the local circumstances. Consequently, there is a huge variety of versions of sheath materials. Four common materials are:

Polyvinyl chloride (PVC)

This is relatively cheap, flexible and is used up to ~100 °C.


Compared to PVC, this material is a little pricier, but has much higher flexibility and temperature resistance up to ~180 °C.

Polytetrafluoroethylene (Teflon™)

This material is characterized by a very high-temperature resistance of ~240 °C. It is also resistant to many chemicals. Compared to PVC and silicone, PTFE is less flexible.

Glass fiber

In areas with high temperatures > 200 °C, insulation made of glass fiber is also used. This can be stable up to 600 °C. However, it tends to become brittle over time. Consequently, these cables should exclusively be used for permanently installed cables.


Hardly any design results in errors as often as shielding. This is typically made from a copper braid that is braided around the insulation. In practice, this rarely proves to be effective. Our recommendation would be to avoid shielding and to lay the cables through metal pipes.

If shielding is used, it is necessary that it does not come into contact with the thermocouple. This typically leads to leakage currents and strange behavior.

Color table for thermocouple types according to IEC, ANSI and JIS
Color table for thermocouple types
Type Positive Negative
T Cu CuNi
J Fe CuNi
E NiCr Ni-Alloy
K NiCr Ni-Alloy
S / R Cu Ni-Alloy
B Cu Cu
N NiCrSi NiSi
Overview of alloy pairs for compensating cables

Vacuum components

We offer various accessories for our vacuum products. These include sealing and clamping rings for small flange connections, as well as various feedthroughs.

You will find many standard versions in our webshop. If you need special solutions, do not hesitate to send us an inquiry.

swagelok© Verschraubung für Ø22 mm Halterohr auf Kleinflansch DN 40 ISO 2861
swagelok Screw connection on small flange
Spannrung für Kleinflanschverbindungen DN 40 ISO 2861
Clamping ring for small flange connections
Find your matching accessory in our webshop

Air supply units for oxygen probes

Our supply unit (air supply unit) is used to supply an oxygen probe with purge and reference air.

The standard configuration includes:

  • stable housing with sufficient space for electrical connections
  • Built-in diaphragm pump with a maximum of 360 l/h at 40 mbar
  • Purge air system with float flow regulator (0-200 L/h)
  • Reference air system with float flow regulator (0-40 L/h)
  • Electropneumatic valve for switching between Purging and reference air supply (XOR logic)
  • Hand button for manual purging
  • Air outlets with G1/8″ internal thread
  • Standard hose nozzles for flexible hose with an internal diameter of 6 mm for connection to the probe
  • Power supply via 230V AC or 24V DC


The ASU must be ordered according to the following specification

30 - GG - UUUU - AA

The specification has the following configuration options:

30 Air supply unit
GG Housing shape
01 Closed in Al die-cast housing
02 Mounted on stainless-steel sheets
UUUU Power supply
0024 24 V DC
0230 230 V AC
AA Air source
MP Diaphragm pump6
DL Compressed air
View our variaty of air supply units
ASU in housing version
ASU in housing version
ASU open with welding angle
ASU open with welding angle

Your inquiry