Long Stroke LVDT


Long Stroke LVDTs from STI

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Configuration
Model Number
Stroke Range (± inches)
Power/Output Type
Armature Types
Accuracy* (% of F.S.)
Output**
Long Stroke LVDT
AC/AC LVDT Displacement Transducer
± 0.5" to
± 8.0"
AC/AC
Free Unguided
0.5
V/V
Voltage Output LVDT Displacement Transducer
± 0.5" to
± 8.0"
DC/DC
Free Unguided
0.5
±5Vdc or 0-10Vdc
Isolated Voltage Output LVDT Displacement Transducer
± 0.5" to
± 8.0"
DC/DC
Free Unguided
0.5
±2.2Vdc
Current Output LVDT Displacement Transducer
± 0.5" to
± 8.0"
DC/DC
Free Unguided
0.5
4-20 mA
AC/AC LVDT Displacement Transducer
± 0.5" to
± 18.5"
AC/AC
Captive Guide
0.5
V/V
Voltage Output LVDT Displacement Transducer
± 0.5" to
± 18.5"
DC/DC
Captive Guide
0.5
±5Vdc or 0-10Vdc
Isolated Voltage Output LVDT Displacement Transducer
± 0.5" to
± 18.5"
DC/DC
Captive Guide
0.5
±2.2Vdc
Current Output LVDT Displacement Transducer
± 0.5" to
± 18.5"
DC/DC
Captive Guide
0.5
4-20 mA
AC/AC LVDT Displacement Transducer
± 0.5" to
± 3.0"
AC/AC
Spring Return
0.5
V/V
Voltage Output LVDT Displacement Transducer
± 0.5" to
± 3.0"
DC/DC
Spring Return
0.5
±5Vdc or 0-10Vdc
Isolated Voltage Output LVDT Displacement Transducer
± 0.5" to
± 3.0"
DC/DC
Spring Return
0.5
±2.2Vdc
Current Output LVDT Displacement Transducer
± 0.5" to
± 3.0"
DC/DC
Spring Return
0.5
4-20 mA

Linear Variable Displacement Transformers (LVDTs) are sensors used for displacement and position measurement. They make an accurate measurement of the movement of the armature (the sliding part) relative to the stationary body of the sensor.

The strength of the LVDT principle is that there is no electrical contact across the transducer position sensing element. This provides clean data, infinite resolution and long life, making it one of the most robust and reliable position sensors available. LVDTs are used in gaging and monitoring of assembly processes, valve position monitoring, resistance weld stroke, oil and well drilling applications, in the mining industry, and in pavement studies. LVDT sensors can be incorporated in to most any application thanks to a variety of mounting options, including a non-contact frictionless configuration with nothing to ever wear out.

Long stroke LVDT sensors from Stellar Technology are available in stroke ranges from 0.5” up to 18.5” and come with free unguided, captive guided, or captive guided spring return armatures to meet the needs of the application. Stellar Technology LVDT sensors are fully welded, constructed of stainless steel, and are available in AC or DC versions. The accuracy of these units ranges from 0.25% to 0.5%FS, with non-linearity of 1% to 0.10%.

STI LVDT sensors are extremely adaptive and ideal for use in extreme environments, capable of operating submerged in sea water, in temperatures up to 1100°F, and at pressures up to 30,000psi. LVDT sensors can also survive in radioactive environments and are unaffected by vibration.

These units are shipped with a 10 point calibration record (5 points each, tension and compression) traceable to NIST as standard
.

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