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E le c t r o n i c L e n gth M easu r i n g E q uipme n t

TESA inductive probes and electronic +U Lf
equipment

TESA probes: At the cutting edge of technology -S 0 +S
TESA develops, manufactures and remains a leader in the inductive probe sector with an
experience of more than 40 years. It offers a complete and unique line of probes designed to LL
meet the requirements of varied as well as demanding applications. -U
Dimensional inspection of medium and large batches of parts in multigauging fixtures repre-
sents a major application area where measuring speed coupled with a high level of accuracy
is needed.
High precision inductive probes (type GTL-21 HP) are, for example, also suited for the mea-
surement of gauge blocks. The display resolution can reach a digital step of 0,01 μm !
On request, TESA probes can be supplied in versions compatible with the electronic equip-
ment of other suppliers.

Typical qualities of TESA inductive probes : excellent repeatability, durability and longevity GT-31
All TESA inductive axial movement are mounted on a ball bearing with the exception of
miniature models. Probe FMS
The ball bearing guidance system is insensitive to any radial force exerted on the probe hou- TT20
sing. An anti-rotation guiding system ensures perfect movement of the mechanical guide.
The axial probe guide system is effectively protected against penetration of liquids (oils) or
solids (dust) by sealing bellows of high elastic quality. Under normal conditions, the standard
nitrile elastomer bellows provide sufficient protection against oils and solvents. For applica-
tions where the probes remain in prolonged contact with coolants or lubricants and aggres-
sive chemicals, Viton bellows are recommended. Viton is a fluoreleastomer resistant to the
heat of oils and aggressive chemicals.
The retraction (lifting) of the measuring bolt rod can be made by the suction of air (vacuum)
accumulated within the probe thanks to the airtightness provided by the sealing bellows.
This method of working principle does not use any mechanical device ensures the operation
of the guidance system in an optimal manner. Similarly, the probe can be moved into its
measuring position by a pneumatic activation (pressure), depending on the probe model.
Inserts (measuring inserts) can be replaced or exchanged. A wide choice of geometrical
forms and sizes are available
The measuring force can be adjusted by changing the spring, depending on the probe model.
The probes integrate an electronic amplifier of the signal without relying on any mechanical
conversion device. Thus, these probes are distinguished by their high repeatability and very
low hysteresis errors.

USB probe

Wireless probe

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