GT Precision LVDT Gauging Transducer

Very high accuracy

High cycle life

Stainless steel

Infinite resolution

Precision linear bearings

Miniature

image of GT Precision LVDT Gauging Transducer

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 GT 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. Our GT 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.

dimensional drawing of LVDT spring return

D1=0.315'' (0.3136'' to 0.3146'')

X=Centre of range

Type	Range	Linearity error (% F.S.)	L	X (nom)	B- (No clamp zone)	Total weight	Spring force at X	Spring rate	Inward over-travel	Outward over-travel	Sensitivity (nom)
GT0500Z	±0.5mm (±0.02'')	±0.25	1.02''	0.29''	0.2''	0.2oz	3oz	16oz/inch	0.01''	0.01''	110mV/V
GT1000	±1mm (±0.04'')	±0.25/±0.1	2.10''	0.6''	0.55''	0.4oz	3oz	24oz/inch	0.06''	0.01''	150mV/V
GT2500	±2.5mm (±0.1'')	±0.25/±0.1	2.26''	0.8''	0.71''	0.4oz	4oz	24oz/inch	0.03''	0.01''	375mV/V
GT5000	±5mm (±0.2'')	±0.25/±0.1	3.41''	0.9''	1.18''	0.5oz	5oz	14oz/inch	0.05''	0.01''	700mV/V

Side (radial) exit cable.

A=0.22''

D1=0.315'' (0.3136'' to 0.3146'')

X=Centre of range

Type	Range	Linearity error (% F.S.)	L	X (nom)	B- (No clamp zone)	Total weight	Spring force at X	Spring rate	Inward over-travel	Outward over-travel	Sensitivity (nom)
GT0500XRA	±0.5mm (±0.02'')	±0.25	1.30''	0.3''	0.2''	0.2oz	3oz	16oz/inch	0.01''	0.01''	110mV/V
GT1000RA	±1mm (±0.04'')	±0.25/±0.1	2.25''	0.6''	0.5''	0.4oz	3oz	24oz/inch	0.06''	0.01''	150mV/V
GT2500RA	±2.5mm (±0.1'')	±0.25/±0.1	2.41''	0.8''	0.7''	0.6oz	4oz	24oz/inch	0.03''	0.01''	375mV/V
GT5000RA	±5mm (±0.2'')	±0.25/±0.1	3.58''	0.9''	1.2''	0.7oz	5oz	14oz/inch	0.05''	0.01''	700mV/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.

AD=0.12''

AL=0.31''

D1=0.315'' (0.3136'' to 0.3146'')

Air filter = 0.00002''

Relative humidity = 60% (maximum)

X=Centre of range

Type	Range	Linearity error (% F.S.)	L	X (nom)	B- (No clamp zone)	Total weight	Minimum	Maximum	Inward over-travel	Outward over-travel	Sensitivity (nom)
GT1000P	±1mm (±0.04'')	±0.25/±0.1	2.83''	1.0''	0.6''	0.4oz	6psi	9psi	0.06''	0.01''	150mV/V
GT2500P	±2.5mm (±0.1'')	±0.25/±0.1	3.04''	0.8''	0.7''	0.5oz	7psi	9psi	0.03''	0.01''	375mV/V
GT5000P	±5mm (±0.2'')	±0.25/±0.1	4.39''	0.9''	1.2''	0.6oz	7psi	8psi	0.05''	0.01''	700mV/V

Specification

Excitation/supply (acceptable)	0.5V to 7V rms, 2kHz to 10kHz (sinusoidal)
Excitation/supply (calibrated)	5V rms, 5kHz (sinusoidal)
Linearity error (Standard)	±0.25% F.S.
Linearity error (Optional on some models)	±0.1% F.S.
Repeatability	0.000006''
Temperature coefficient (span)	±0.006% F.S. /℉ (typical)
Operating temperature range	-40℉ to 212℉
Electrical termination	6.6ft (integral cable) Longer available to order.

Connection details

Options and accessories

Mounting block for RDP transducers
E74 In-Line LVDT Amplifier
Amplifiers
Panel meter