GCD SE Series LVDT Position Sensor

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Key features

• Heavy duty DC-operated gage head
• All-welded stainless steel construction
• Resistant to harsh environments
• Hardened tool steel contact tip
• High side load resistance
• Long cycle life
• CE compliant

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About the GCD SE series Gage Heads

The GCD-SE Series of heavy-duty DC operated gage heads enable high performance in environments containing moisture, dirt, and fluid contaminants. With a spring loaded LVDT, a precision linear bearing, and internal conditioning electronics operating on a single ended 8.5 to 28 VDC input with minimal current draw, the GCD-SE is ideally suited to portable measurement applications in difficult environments. Internal EMI, ESD and RFI protection, provide CE compliance when correctly installed. Synchronous demodulation ensures unsurpassed noise rejection.

These robust gage heads allow measurements over stroke ranges from 0 to 0.100 inch [2.54mm] up to 0 to 2.0 inches [50.8 mm]. The maximum spring force is typically 8 oz [230 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 GCD-SE Series provide the lowest cost ofownership 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 GCD-SE 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, air-extend/spring retract, and cable assemblies. Also see our other models with built-in signal conditioning, GCD (DC voltage), GCT (4-20mA 2-wire loop) and GC-485 (RS-485 Digital Series), as well as the AC operated GCA.

Other features GCD SE Series

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

Applications for GCD SE Series

• Roller Gap Control
• In-process Wet Grinding
• Hand Held Gages
• X-Y Positional Feedback
• Automotive chassis track testing
• Remote site monitoring

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