GCD-SE SERIES Single Ended DC Gage Heads SPECIFICATIONS 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 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 28VDC input with minimal current draw, the GCD-SE is ideally suited to portable measurement applications in difficult environments. Internal EMI, ESD and FEATURES RFI protection, provide CE compliance when correctly installed. Synchronous demodulation ensures unsurpassed noise rejection. All-welded stainless steel construction These robust gage heads allow measurements over stroke ranges from 0 Resistant to harsh environments to 0.1 inch 2.54mm up to 0 to 2 inches 50.8 mm . The spring force is MS type connector (MIL-C-5015) typically 9oz 255 grams at fully compressed electrical stroke. A Long cycle life removable black-chromed, hardened tool steel tip is threaded (4-48UNF- CE compliant 2A) to the working end. Internal construction prevents the core and shaft Calibration certificate supplied with from rotating as they move longitudinally. The integral electrical connector each unit (welded) provides for easy installation and allows replacing a damaged Air extend/spring retract available cable without sacrificing the sensor. Installation and adjustment are (consult factory) facilitated by an external -20 mounting thread and the two locknuts supplied with each unit. APPLICATIONS Like in most of our LVDTs, the GCD-SE windings are vacuum impregnated with a specially formulated, high temperature, flexible resin, and the coil Roller Gap Control assembly is potted inside its housing with a two-component epoxy. This In-process Wet Grinding provides excellent protection against hostile environments such as high Hand Held Gages vibration and shock. X-Y Positional Feedback Automotive chassis track testing The ruggedness, long life cycle, and very high reliability of the GCD-SE Remote site monitoring 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. SENSOR SOLUTIONS /// GCD-SE Series Rev. 8 07/2017 Page 1 GCD-SE SERIES Single Ended DC Gage Heads PERFORMANCE SPECIFICATIONS ELECTRICAL SPECIFICATIONS Parameter GCD-SE 100 GCD-SE 250 GCD-SE 500 GCD-SE 1000 GCD-SE 2000 Stroke/gaging range 0 to 0.10 2.54 0 to 0.25 6.35 0 to 0.50 12.7 0 to 1 25.4 0 to 2 50.8 Sensitivity (VDC/inch) 50 20 10 5 2.5 Supply voltage +8.5 to +28VDC Supply current 10mA maximum 6mA typical Line regulation 0.2 mV/V Output voltage range 0 to +5VDC (4 wire) +1 to +6VDC (3 wire) - Increases when the core is displaced towards connector Output Impedance 1 Ohm Noise and ripple 10 mV RMS, maximum Non-linearity 0.25% of FR, maximum Repeatability 25 -inch 0.6 m Stability 0.1% of FSO after warm up Temperature coefficient of sensitivity 0.028%/F 0.05%/C 15Hz, maximum Frequency response (dynamic) ENVIRONMENTAL SPECIFICATIONS & MATERIALS Operating temperature -13F to +185F -25C to 85C Survival temperature -65F to +250F -55C to 125C Shock survival 250 g (11ms half-sine) Vibration tolerance 10 g up to 2kHz Housing material AISI 400 Series stainless steel Electrical connector 6-pin MS type connector (MIL-C-5015) IEC 60529 rating IP68 to 1,000 PSI 70 bars with use of proper mating connector plug Notes: All values are nominal unless otherwise noted Dimensions are in inch mm unless otherwise noted FR: Full Range is the stroke range, end to end FR=S for a 0 to S stroke range FSO (Full Scale Output): Largest absolute value of the outputs measured at the ends of the range WIRING SCHEMATICS & BLOCK DIAGRAM Important: NEVER connect Pins D and C together NEVER connect Pin D to other GCD-SEs A through E: Connector pin assignments SENSOR SOLUTIONS /// GCD-SE Series Rev. 8 07/2017 Page 2