Temperature indicators


Since 1863

Temperature indicators

Temperature indicators serve the

  • Measurement
  • Monitoring

of surface temperatures of building components.

Temperature indicators are available as

  • Pen for marking on the component
  • Liquid for application to Surfaces
  • self-adhesive labels

There are many applications for temperature indicators, e.g.:

  • Monitoring of maximum temperatures during wave bath soldering, stove enameling, sealing, curing or gluing
  • Determination of glass temperatures
  • Monitoring of operating temperatures of rolling bearings, plain bearings, transformers, molds, hydraulic systems etc.
  • Monitoring transport and storage temperatures
  • Measuring process temperatures under dynamic conditions

Temperature indicator (pin)

More information

Simple, fast and inexpensive temperature measurement without measuring instrument and electronics.
Reliable and precise - melts already at +1 % of the nominal temperature.

Suitable e.g. for the determination of the surface temperature

  • during arc welding
  • during hot bending, hot forming
  • when forging
  • in metal production
  • during preheating
  • during heat treatment
  • during soft annealing and stress relief annealing
  • of tools, steam dampers, furnaces

Determination of the operating temperature of

  • Bearings (plain, rolling bearings)
  • Transformers
  • Condensation pots
  • Molds
  • Preheaters for PC boards
  • Motors
  • electronic components
  • Hydraulic systems
  • commercially available ferrous alloys
  • Hot plates
  • Heat decoys


The component is marked during heating. This mark melts as soon as the surface of the workpiece touches the marked location has reached the specific temperature of the Tempilstik.

Other temperatures available.

Please specify the desired temperatures in your request.

Temperature indicator (liquid)

Temperature indicator (label)

More information

Calibrated adhesive labels for temperature measurement for documentation of warranty claims, inspection or quality control reports.

The tolerance is ±1% °C of the nominal temperature.

The labels are equipped with heat-sensitive indicators. When the nominal temperature is reached, the color of the indicators changes from light gray to black.

The color change is not reversible.

Application areas

  • Monitoring the surface temperature of electronic devices and motors
  • Monitoring and recording of maximum temperatures during wave bath soldering, stove enameling, sealing, curing, gluing
  • Monitoring and recording of operating temperatures, temperatures during transport and storage


  • Clean and dry the surface to be tested to achieve maximum contact area and adhesive strength.
  • No further treatment of the surface is required.
  • Peel the release paper from the adhesive surface and press it firmly onto the surface to be tested.

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