DESCRIPTION
The GCD-SE Series of heavy-duty DC operated gage heads enable high performance in environments
containing moisture, dirt, and fluid contaminants. These Gage heads are spring loaded LVDTs (Linear Variable
Differential Transformers) with precision linear bearings 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. 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 +0.100” (+2.54mm) up to +2.0 inches
(+50.8 mm). The maximum spring force is typically 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 GCD-SE 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 GCD-SE Series designs also require fewer parts and weld joints,
thereby increasing overall structural integrity and reliability.
MEAS offers options, such as mating connector plugs, special contact tips (including AGD dial indicator 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.
Measurement Specialties, Inc. (NASDAQ MEAS) offers many other types of sensors and signal conditioners.
Data sheets can be downloaded from our web site at:
MEAS acquired Schaevitz Sensors and the Schaevitz
FEATURES
GCD-SE Series Gage Heads Rev 1
GCD-SE Series Gage Heads
All-welded stainless steel construction
Resistant to harsh environments
MS type connector (MIL-C-5015)
Long cycle life
CE compliant
Calibration certificate supplied with each unit
Air extend/spring retract available (consult factory)
www.meas-spec.com
http://www.meas-spec.com/datasheets.aspx
®
1/4
trademark in 2000.
APPLICATIONS
Roller Gap Control
In-process Wet Grinding
Hand Held Gages
X-Y Positional Feedback
Automotive chassis track testing
Remote site monitoring
Hermetically sealed housing
Single ended 8.5 to 24VDC supply
Low current consumption (only 6mA)
Ideal for battery operation
IEC IP68 rating to 1,000 PSI (70 bars)
Long strokes up to 2 inches
Hardened tool steel contact tip
High side load resistance
2011-may