Safety Information; Description And Use; Technical Data - SIKA 621 Notice D'utilisation

Bi-Metal Dial Thermometer
1

Safety information

Comply with the applicable domestic safety regulations during installation, operation-
al setup and use.
The connection must be made only by qualified personnel.
Disregard of the corresponding regulations can lead to severe bodily harm and/or property
damage.
Ensure that your Bi-Metal Dial Thermometer is used without damage by taking the follow-
ing precautions:
The maximum temperature of the medium to be measured must be within the display
range of the thermometer.
Check that the construction and materials of the thermometer are resistant to the condi-
tions of use and the medium to be measured.
Use thermowells!
Thermometers without damping fluid in the case are intended for use in locations free of
vibrations and impacts.
Conversions or other technical changes of the equipment by the customer are not permitted.
Such actions void the warranty.
Thermowells are suitable for trouble-free installation and removal.
2

Description and use

Our Bi-Metal Dial Thermometer have a case and stem made of stainless steel. A bimetallic
coil is used as a measurement system.
As the temperature changes, the coil roll changes. This rotational movement is translated di-
rectly via an axle or via a deflection spring to the indicator.
This makes Bi-Metal Dial Thermometers free of hysteresis. They are also suited for measur-
ing corrosive chemical or petrochemical materials.
3

Technical data

Models:
Type 621
To compensate for the influence of vibrations, Bi-Metal Dial Thermometers of the same de-
sign are available with case filling models.
Suitable thermowells are available for the individual stem types.
Technical changes reserved
Type 631 Type 681
Safety information
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