DC-EC Series General purpose DC LVDT High level 10VDC output Stroke ranges from 0.05 to 10in 0.25% linearity Reverse polarity protection Double magnetic shielding Stainless steel housing Imperial or metric threaded core DESCRIPTION The DC-EC Series DC operated LVDTs combine a computer-designed AC LVDT with custom integral signal conditioning to achieve premium performance. Operating on a nominal 15VDC supply, the DC-EC Series delivers an extremely linear, low noise, yet high frequency response 10VDC output. Innovative design and manufacturing techniques further enhance the DC-EC performance and cost efficiency. The micro-miniature components employed were meticulously selected for maximum stability and thermal performance. Vacuum encapsulation of all elements affords excellent shock and vibration tolerance, while double magnetic shielding provides the utmost protection from stray fields. Like in most of our LVDTs, the DC-EC windings are vacuum impregnated with a specially formulated, high temperature, flexible resin, and the coil assembly is potted inside its housing with a two-component epoxy. This provides excellent protection against hostile environments such as high humidity, vibration and shock. Available in a variety of stroke ranges from 0.05 to 10 inches, the DC-EC Series can be configured with a number of standard options including metric threaded core, guided core and small diameter/low mass core. Captive core option: The DC-EC features an optional captive core design (available for most models) that greatly simplifies installation. The core rod and bearing assembly includes a Bronze bearing on the front end for self-alignment, while a PTFE sleeve allows low-friction travel through the stainless steel boreliner (spool tube). The core rod and the bearing assembly are both field serviceable. Also see our other LVDTs with built-in signal conditioning: DC-SE (single-ended DC voltage), HCD (Hermetically sealed, DC voltage), HC-485 (RS485 digital output), and the HCT (4-20mA, 2-wire loop). Measurement Specialties, Inc. (NASDAQ MEAS) offers many other types of sensors and signal conditioners. Data sheets can be downloaded from our web site at: DC-EC Series General purpose DC LVDT PERFORMANCE SPECIFICATIONS ELECTRICAL SPECIFICATIONS Parameter DC-EC 050 DC-EC 125 DC-EC 250 DC-EC 500 DC-EC 1000 DC-EC 2000 DC-EC 3000 DC-EC 5000 DC-EC 10000 0.050 0.125 0.25 0.5 1 2 3 5 10 Stroke range 1.27 3.17 6.35 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 7.9 3.15 1.6 0.79 0.39 0.20 0.13 0.079 0.039 Frequency response Hertz -3dB 500 500 500 200 200 200 200 200 200 Input voltage 15VDC Input current 25mA Output at stroke ends 10VDC (Positive and increasing when the core is displaced from null position towards the cable) 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 connection Cable with 4 conductors, 28AWG stranded copper, braided shield and polyurethane jacket, 39 inches 1 meter long. Shield is connected to case. IEC 60529 rating IP61 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 DC-EC Series Rev. 7 www.meas-spec.com 2015-July 2/4