HCD SERIES Hermetically Sealed DC LVDT SPECIFICATIONS Hermetically sealed, all welded Stainless steel housing High level 10VDC output Stroke ranges from 0.05 to 10 inches Shock and vibration tolerant MS style connector IEC IP68 rating to 1,000 PSI 70 bars Captive core option The HCD Series hermetically sealed DC operated LVDTs are the perfect choice for high performance measurements in environments containing moisture, dirt, and fluid contaminants. Operating on a nominal 15VDC supply, these heavy-duty LVDTs deliver an extremely linear, low noise, yet high frequency response 10VDC output. FEATURES All-welded stainless steel The integral electrical connector (welded, glass-sealed MS type) construction provides for easy installation and allows replacing a damaged Shock and vibration tolerant cable without sacrificing the sensor. Low noise, 10VDC output The HCD is available in stroke ranges of 0.05 inch 1.27mm up Double magnetic shielding to 10 inches 254mm , and with a number of standard options MS type connector (MIL-C-5015) including imperial or metric threaded core, guided core and captive Calibration certificate supplied with core. each unit Like in most of our LVDTs, the HCD windings are vacuum impregnated with a specially formulated, high temperature, flexible APPLICATIONS resin, and the coil assembly is potted inside its housing with a two- Harsh industrial environments component epoxy. This provides excellent protection against hostile environments such as high vibration and shock. Pressurized installations up to 1,000 psi Captive core option: The HCD features an optional captive core Paper processing mills design (available for most models) that greatly simplifies Roller gap position feedback installation. The core rod and bearing assembly includes a Bronze Automated test systems bearing on the front end for self-alignment, while a PTFE sleeve X-Y Positional Feedback allows low-friction travel through the stainless steel boreliner (spool tube). SENSOR SOLUTIONS /// HCD Series Rev 7 07/2017 Page 1 HCD SERIES Hermetically Sealed DC LVDT PERFORMANCE SPECIFICATIONS ELECTRICAL SPECIFICATIONS HCD HCD HCD HCD HCD HCD HCD HCD HCD Parameter 050 125 250 500 1000 2000 3000 5000 10000 0.050 0.125 0.25 0.5 1 2 3 5 10 Stroke range 1.27 3.17 6.85 12.7 25.4 50.8 76.2 127 254 Sensitivity, VDC/inch 200 80 40 20 10 5 3.3 2.0 1.0 Sensitivity, VDC/mm 7.87 3.15 1.575 0.787 0.394 0.197 0.130 0.079 0.0394 Frequency response Hertz -3db 500 500 500 200 200 200 200 200 200 Input voltage +/-15VDC Input current 25mA Output stroke ends +/-10VDC (Output is positive when the core is displaced from null towards the connector) Non-linearity 0.25% of FR, maximum Output ripple 25mVRMS, maximum Stability 0.125% of FSO Output impedance 1 Ohm ENVIRONMENTAL SPECIFICATIONS & MATERIALS Operating temperature +32F to +160F 0C to +70C Survival temperature -65F to +200F -55C to +95C 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=2xS for S stroke range FSO (Full Scale Output): Largest absolute value of the outputs measured at the ends of the range WIRING INFORMATION A through F: Connector pin assignments SENSOR SOLUTIONS /// HCD Series Rev 7 07/2017 Page 2