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Precision LVDT Gauging Transducer
GT

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- High cycle life
- Stainless steel
- Infinite resolution
- Very high accuracy
- Precision linear bearings
- Miniature

  These transducers are for displacement / position measurement. They make an accurate position measurement of the movement of the armature (the sliding part) relative to the body of the displacement transducer.

  This transducer uses the Linear Variable Differential Transformer (LVDT) principle which means that it is probably the most robust and reliable position sensor type available. The strength of the LVDT sensor's principle is that there is no electrical contact across the transducer position sensing element which for the user of the sensor means clean data, infinite resolution and a very long life.

  The GT series gauging transducer employs precision linear bearings to optimise the LVDTs measurement precision and repeatability.

SPRING RETURN VERSION

  Our spring displacement transducer has bearings to guide the armature inside the measurement sensor and a spring which pushes the armature to the fully out position. Spring return LVDTs are appropriate where it is not possible to connect the transducer armature to the moving component being measured.

End (axial) exit cable.

TYPE
L
X
B- (No clamp zone)
GT500Z
26mm 7.25mm 6mm
GT1000
53mm 14.2mm 14mm
GT2500
58mm 20.3mm 18mm
GT5000
87mm 22.0mm 30mm

TYPE
RANGE
Linearity error
(% F.S.)
Total
weight
Spring
force at X
Spring
rate
Inward
over-travel
Outward
over-travel
Sensitivity
(nom)
GT500Z
¡¾0.5mm <¡¾0.25 7g 1.0N 1.7N/cm 0.3mm 0.3mm 110mmV/V
GT1000
¡¾1mm <¡¾0.25/¡¾0.1 11g 0.8N 2.6N/cm 1.4mm 0.3mm 150mmV/V
GT2500
¡¾2.5mm <¡¾0.25/¡¾0.1 13g 1.1N 2.6N/cm 0.8mm 0.3mm 375mmV/V
GT5000
¡¾5mm <¡¾0.25/¡¾0.1 16g 1.5N 1.5N/cm 1.3mm 0.3mm 700mmV/V

Side(radial) exit cable.

TYPE
L
X
B- (No clamp zone)
GT500XRA
33mm 7.3mm 6mm
GT1000RA
57mm 14.2mm 14mm
GT2500RA
61mm 20.3mm 18mm
GT5000RA
91mm 22.0mm 30mm

TYPE
RANGE
Linearity error
(% F.S.)
Total
weight
Spring
force at X
Spring
rate
Inward
over-travel
Outward
over-travel
Sensitivity
(nom)
GT500XRA
¡¾0.5mm <¡¾0.25 7g 1.0N 1.7N/cm 0.3mm 0.3mm 110mmV/V
GT1000RA
¡¾1mm <¡¾0.25/¡¾0.1 12g 0.8N 2.6N/cm 1.4mm 0.3mm 150mmV/V
GT2500RA
¡¾2.5mm <¡¾0.25/¡¾0.1 16g 1.1N 2.6N/cm 0.8mm 0.3mm 375mmV/V
GT5000RA
¡¾5mm <¡¾0.25/¡¾0.1 21g 1.5N 1.5N/cm 1.3mm 0.3mm 700mmV/V

AIR PUSH VERSION

  The air-push version of the GT displacement transducer is extended by the application of air to the displacement transducer and is retracted by an internal spring. This is useful where the LVDTs position measurement tip must be retracted to allow components to move on a conveyor for example.

End (axial) exit cable.

TYPE
L
X
B- (No clamp zone)
GT1000P
72mm 26.0mm 14mm
GT2500P
77mm 20.0mm 18mm
GT5000P
112mm 22.0mm 30mm

TYPE RANGE Linearity error
(% F.S.)
Total
weight
Air pressure Inward
over-travel
Outward
over-travel
Sensitivity
(nom)
Maximum Minimum
GT1000P
¡¾1mm <¡¾0.25/¡¾0.1 11g 40kPa 65kPa 1.4mm 0.3mm 150mmV/V
GT2500P
¡¾2.5mm <¡¾0.25/¡¾0.1 13g 45kPa 65kPa 0.8mm 0.3mm 375mmV/V
GT5000P
¡¾5mm <¡¾0.25/¡¾0.1 16g 45kPa 55kPa 1.3mm 0.3mm 700mmV/V

SPECIFICATION

 Excitation/supply (acceptable)  0.5V to 7V rms, 2kHz to 10kHz (sinusoidal)
 Excitation/supply (calibrated)  5V rms, 5kHz (sinusoidal)
 Output load  100k Ohms
 Repeatability  0.00015mm
 Temperature coefficient (zero)  ¡¾0.01% F.S. /¡ÆC (typical)
 Temperature coefficient (span)  ¡¾0.01% F.S. /¡ÆC (typical)
 Operating temperature range  -40¡ÆC to 100¡ÆC
 Electrical termination  2m (integral cable) Longer available to order.

All dimensions and specifications are nominal.

Due to our policy of on-going development, specifications may change without notice. Any modification may affect some or all of the specifications for our equipment.

 

 

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