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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

GT31 Lever Probes ± 0,3 mm, 0,3 mm Measuring Travel, DIN 32876
Inclinable Lever Part 1
All-metal housing,
GT 31 with lever in Well suited for use where probes with axial movement measuring bolts are incon- matt-chromium
perpendicular position venient for measurements. finish
–– Inclinable lever for measuring in two directions. 2 dovetail attach-
–– Balanced lever system on ball-bearing. ments for clamping.
–– Interchangeable measuring insert, with carbide ball tip, inclinable through Both lower and
upper stops are
to 180°. fixed.
–– Automatic reversal of the probing direction while the indication remains Stainless steel
measuring stem.
unchanged. Interchangeable
–– Protected against shocks by 2 safety clutches. measuring inserts.
–– One-piece housing provided with 2 dovetails. Carbide ball tip
–– Level of protection: IP40 as per IEC 60529. Ø 2 mm. Cable
length:
01840105 2 m. DIN 45322,
ø 8h6 5 pin connector.
Other measuring
ø2 inserts available
1,65 as optional accesso-
17 20 ries..
(90) Supply frequency:
40 50 13 kHz (± 5 %) Max.
mechanical fre-
8,54 L quency**: 25 Hz.
6,4 ø 1,5
GT 31 side view and top view 20 ± 0,5°C
GT 31
B Measuring direction Protection level:
A Measuring direction IP40 (IEC 60529)
α
Mobile weight: 12 g

GT 31 Shorter lever
Figure A - the leverage matches 1:1, no correction of the
measured value needed GT 31
Figure B - the leverage is no longer 1:1, correction of the
measured value is needed.

Note
(Fig. A) With the insert lying parallel to the workpiece surface, the leverage matches 1:1. Therefore, no correction of the
measured values is needed.
(Fig. B, angle α) Any other position will change the effective lever length, so that read values must be corrected. In this
connection, please consult the instruction manual.

Measuring Nominal mea- Lever retraction Sealing
range, mm suring force*, N bellows
Without
03210802 GT 31 ± 0,3 0,1 Without bellows
03210801 GT 31 Without
03210803 GT 31 ± 0,3 0,02 Without bellows
Without
± 0,3 0,2 Without bellows

Measuring Max. permissible Repeata- Hysteresis, Setting of lower Cable output Data sheet
lever travel, error for devia- bility, μm μm stop of the mea- No.
mm tions in linearity, 0,1
GT 31 0,7 μm suring insert***, Angled 03200266
(L in mm) mm
0,2 + 50 · L2 0,25 Fixed lower and
upper stops

* Electrical zero (N) ± 25 % deviation limit. Valid in vertical mounting position, measuring bolt lowered and in static measuring.
** For an amplitude of 10 % to the last value of the measuring range.
*** Distance from electrical zero.

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