GCA Series LVDT Position Sensor

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Key features

• Heavy duty AC-operated gage head
• All-welded stainless steel construction
• Resistant to harsh environments
• MS type connector (MIL-C-5015)
• High temperature resistance
• Long cycle life

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About the GCA series Gage Heads

The GCA Series heavy-duty gage heads enable high performance in environments containing moisture, dirt, and fluid contaminants. Gage heads are spring loaded LVDTs (Linear Variable Differential Transformers) with precision linear bearings.

These robust high-temperature gage heads allow measurements over long strokes up to ±2.0 inches [±50mm].The maximum spring force is typically less than 8 oz [227 grams]. A removable black-chromed, hardened tool steel tip is threaded (4-48UNF-2A) to the working end. Internal construction prevents the core and shaft from rotating as they move longitudinally. The integral electrical connector (welded) provides for easy installation and allows replacing a damaged cable without sacrificing the sensor. Installation and adjustment are facilitated by an external ½-20 mounting thread and the two locknuts supplied with each unit.

The ruggedness, long life cycle, and very high reliability of the GC Series provide the lowest cost of ownership over the life of the equipment onto which they are installed. The one-piece front end (barrel which contains the bearing assembly), machined from solid stainless steel bar, coupled with a bronze bushing, has far greater resistance to bending forces and side loads compared to other designs. This is particularly important on the longer stroke versions; it reduces the common risk of probe damage/bending during installation or maintenance of industrial equipment. The GC Series designs also require fewer parts and weld joints, thereby increasing overall structural integrity and reliability.

Althen offers options, such as mating connector plugs, special contact tips (including AGD dial indicator tips), air-extend/spring retract, and cable assemblies to connect to our signal conditioners. Also see our models with built-in signal conditioning: GCD (DC voltage), GCD-SE (single-ended DC voltage), GCT (4-20mA 2-wire loop) and GC-485 (RS-485 Digital Series).

Other features GCA Series

• Calibration certificate supplied with each unit
• Air extend/spring retract available (Consult factory)

Applications for GCA Series

• Factory automation
• Industrial printing equipment
• Steel mills
• Metal thickness gaging
• High temperature applications
• Environments requiring hermetically sealed transducers
• In-process measurements (feedback loop with PLC or CNC controller)

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