GT21 standard probes TESA, ± 1 mm, plunger travel 4.3 mm, axial cable
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Informazioni di prodotto e di utilizzo
TESA GT 21 inductive probe, measuring range ± 1 mm.
Description
GT21-I probe, ± 1 mm, force = 0.63 N, axial cable.
Probe:
- Measuring plunger mounted on a ball bearing
- Guide separate from the mounting shank, so that the movement of the measuring plunger is not adversely affected if the probe is clamped incorrectly
- Guide ensuring low sensitivity to radial forces acting on the measuring plunger
- Ø 8 mm mounting shank that can be clamped along its entire length
- Guides highly protected against the ingress of liquids (oils) or solids (dust) by a protective bellows
- Version with detachable cable available for some models
Measurement:
- Axial movement
- Measuring force adjustable by changing the spring (depending on the model)
- Contact points can be replaced or changed
TESA GT 21 inductive probe, compatible with the M4P-3 4-input interface with analogue output.
Technical data. Measuring range ± 1 mm; nominal output signal with M4P-3 100 mV for a travel of 100 µm from 0 with 1 V/mm gain.
Key features
- Measuring plunger mounted on a ball bearing
- Version with detachable cable available for some models
- Axial movement
- Contact points can be replaced or changed
- Measuring range ± 1 mm
- Repeatability limit 0.01 µm
Technical data
| Series | GT21 |
| Measuring range [mm] | ± 1 |
| Repeatability limit [µm] | 0.01 |
| Protection rating | IP65 |
| Hysteresis [µm] | 0.02 |
| Maximum permissible linearity error [µm] | 0.2 + 3 x (L x L x L) |
| Plunger lift | Mechanical |
| Protective bellows | Nitrile |
| Cable orientation | Axial |
| Sensitivity [mV/V/mm] | 73.75 |
| Cable length [m] | 2 |
| Standard | DIN 32876 |
| Material | Mounting shank: nickel-plated; Measuring plunger: hardened steel; Protective bellows: Nitrile; Ball contact point: carbide |
| Dimensions | Mounting shank: Ø 8 mm; Contact thread: M2.5; Ball contact point: Ø 3 mm; Cable: 2 m; Connector: 5p DIN 45322 |
| Mass | Moving mass: 6 g |
| Hysteresis | 0.02 µm |
| Coefficient of linear expansion | 0.15 µm/°C |
| Repeatability | 0.01 µm |
| Measuring range | ± 1 mm |
| Plunger travel | 4.3 mm |
| Rest position | Factory setting: -1.2 mm; Adjustable: -2.2 ÷ 0.1 mm |
| Operating temperature | 20 °C ± 0.5 |
| Sensitivity | 73.75 mV/V/mm |
| Maximum permissible linearity error | L in mm; 0.2 + 3 x (L x L x L) µm |
Models and variants
| TESA code | Item | Measuring force [N] | Mass [kg] | Mass [g] |
|---|---|---|---|---|
| 03210904 | Standard GT 21 probe / Nominal measuring force 0.63 N | 0.63 | 0.083 | 83 |
| 03290133 | Set of 10 GT 21 probes 0.63 N | 0.63 | 0.83 | 830 |
| 03290167 | Set of 10 GT 21 probes 1 N | 1 | ||
| 03290179 | Set of 10 GT 21 probes 1.6 N | 1.6 | 0.997 | 997 |
| 03210905 | Standard GT 21 probe / Nominal measuring force 1.00 N | 1 | 0.083 | 83 |
| 03210906 | Standard GT 21 probe / Nominal measuring force 1.60 N | 1.6 | 0.083 | 83 |
| 03210907 | Standard GT 21 probe / Nominal measuring force 2.50 N | 2.5 | 0.088 | 88 |
| 03210908 | Standard GT 21 probe / Nominal measuring force 4.00 N | 4 | 0.083 | 83 |
Supplied with
Probe · Adjusting key · Inspection report · Instruction manual · Declaration of conformity
Documentation
- Document: 15-07-95-catalog extract-dc lever probe lever probe axial probes
- Document: 15-07-95-catalog extract-numerical index index 3 cat gen en p481
- Document: 15-07-95-catalog extract-standard gt21 probes 1 mm 4 3 mm bolt tr
- Data sheet / dimensions: 03200249a
Manufacturer's official page: tesatechnology.com
Price and availability
Products without a listed price are offered with a configuration defined together with our technical support: contact us for a quote stating the model, quantity and application.
Selection guide: TESA GT21 standard probes, ± 1 mm, plunger travel 4.3 mm, axial cable
TESA GT 21 inductive probe, measuring range ± 1 mm.
TESA inductive probes (half-bridge system) are selected according to measuring range (± 1, ± 2, ± 5 mm), measuring force (from 0.16 to 4 N depending on the material and finish of the workpiece), cable exit (axial or radial, depending on the space available in the fixture) and plunger lift (manual or pneumatic, GTx2 and GTLx2 versions). The GTL versions are linearised for maximum accuracy over the whole range; the DC versions have a voltage analogue output for PLCs; the USB versions connect directly to a PC without a display unit; the FMS parallel-guided probes are for measurements with constant force and interchangeable probes; lever probes are for hard-to-reach points. The probe must be paired with a display unit (TWIN, TT100) or an interface (M4P-3, TESA-MODUL) and with suitable contact points.
If in doubt, contact us: our technical support will advise you on the right model, measuring force, contact points and display unit for your application.
Integration and programming
The probe is fixed by its Ø 8 mm h6 shank in the holder or measuring fixture and connected to the display unit or interface via the 5-pin DIN connector (or USB for the USB versions, voltage output for the DC versions). Zeroing, presets, tolerances and formulas between several probes are set on the display unit; with M4P-3 and TESA-MODUL the signals go to PLCs, acquisition boards and SPC software. Probes with pneumatic plunger lift require the pneumatic accessories (electropneumatic pump, fittings) listed among the accessories.
Calibration and repair
Every TESA probe is supplied with an inspection report and a declaration of conformity. Periodic verification on gauge blocks or setting standards is recommended and, for quality systems, calibration with a traceable certificate; replace worn contact points and damaged bellows. After impacts or unstable readings the probe should be sent in for service.
Service: RODER S.r.l. – INNOVACHECK division handles verification, calibration with certificate and repairs of TESA probes and display units in Italy. Contact us stating the model and serial number.