02560987-000

DC-EC AccuSens™ Series General Purpose LVDT The DC–EC AccuSens™ Series incorporates a unique monolithic chip combined with a computer-designed AC LVDT to achieve premium performance. The ratiometric design of the monolithic circuitry compensates for power supply deviations for continuously stable operation. Unaffected by input variations, the transducer provides highly accurate, repeatable measurement. Innovative manufacturing techniques further enhance the AccuSens operation and cost efficiency. Micro-miniature components used in the construction of each unit are selected for maximum stability. Specifications Vacuum encapsulation of all elements produces an assembly tolerant to shock, vibration and other forms of physical abuse. Double magnetic shielding protects against stray electrical fields. Input Voltage ................... ±15 VDC (nominal), ±25 mA Operating Temperature Range .............................. 32°F to 160°F (0°C to 70°C) Survival Temperature Range .............................. -65°F to 200°F (-55°C to 95°C) Null Voltage ..................... 0 VDC Ripple ................................ Less than 25 mV rms Linearity ........................... 0.25% full range Stability ............................. 0.125% full scale Temperature—Coefficient of Scale Factor .............. 0.04%/°F (0.08%/°C) Shock Survival ................. 250 g for 11 milliseconds Vibration Tolerance ........ 10 g up to 2 kHz Coil Form Material .......... High density, glass-filled polymer Housing Material .............. AISI 400 series stainless steel Cable ................................. 4 conductor, 28 AWG, stranded copper with braided shield and polyurethane jacket, 1 meter EMC ................................... CE certified (The DC-EC series, when correctly installed, comply with the EMC Directive 89/336/ EEC generic standards for residential commercial, light industrial and industrial environments.) Output Impedance .......... Less than 1 ohm Features ❏ Linearity 0.25% of FS or better ❏ CE certified ❏ Integrated signal conditioning ❏ Rugged stainless steel construction ❏ Calibration certificates supplied with all models Applications ❏ General Options ❏ Metric thread core ❏ Captive core option for convenient installation ❏ Guided core ❏ Small diameter, low mass core Performance and Electrical Specifications1 DC–EC Series Model Number Nominal Linear Range inches mm Scale Factor V/inch V/mm Response -3 dB Hz 050 DC–EC ±0.050 ±1.25 200.0 8.00 500 125 DC–EC ±0.125 ±3.0 80.0 3.20 500 250 DC–EC ±0.250 ±6.0 40.0 1.60 500 500 DC–EC ±0.500 ±12.5 20.0 0.80 200 1000 DC–EC ±1.000 ±25 10.0 0.40 200 2000 DC–EC ±2.000 ±50 5.0 0.20 200 3000 DC–EC ±3.000 ±75 3.3 0.13 200 5000 DC–EC ±5.000 ±125 2.0 0.08 200 10000 DC–EC ±10.00 ±250 1.0 0.04 200 1 All calibration is performed at room ambient temperature. Internet: www.schaevitz.com North America Tel: 800/745-8008 Document Fax Back: 916/431-6541 Europe Tel: (01753) 537622 56 DC-EC models, when correctly installed, are CE certified to comply with the EMC Directive 89/336/EEC. How to Order Specify the DC-EC Model followed by the desired option number(s) added together. DC-EC Series LVDT Monolithic chip circuitry DC-Operated Wiring INPUT OUTPUT +15VDC Red + 10VDC - White Ordering Example: Model Number 050 DC-EC-200 is an DC-EC Series LVDT with a ±0.050” range (050 DC-EC), with the captive core option (200). -15VDC Black Power Supply Green Signal Common Common DC-EC Model 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 DC-EC Options Number 006 010 020 200 Block Diagram Description Metric Thread Core Guided Core Small Diameter, Low Mass Core1 Captive Core2 +15VDC 1 Consult factory for mass, dimensions and thread size. Available on 050 DC-EC through 3000 DC-EC models only. -15VDC 2 Red Grn Blk Reverse Polarity Protector Oscillator Demodulator LVDT Wht + -10VDC Output Amplifier Output Signal Power/Output Common Dimensions in (mm) 0.750 + - 0.010 (19.05 + - 0.254) Diameter New Captive Core Option! The DC-EC features a captive core design that greatly simplifies installation. The design utilizes a core rod and bearing assembly that is captured and guided within the LVDT providing low friction travel throughout the stroke length. The assembly incorporates two Delrin bearings on the core rod traveling through the stainless steel boreliner. A bronze bearing on the front end utilizes a self-aligning feature to accommodate lateral LVDT movement during operation. The core rod and bearing assembly are field replaceable. See page 71 for specifications. 0.236 + - 0.005 (6.0 + - 0.127) Diameter P + A - 0.030 + 0.762) - 0.188 + - 0.005 (4.78 + - 0.127) Diameter 4-40 UNC-2B (Standard) M3 x 0.5 - 6H (Metric) 0.38 (9.65) Minimum Depth + B - 0.030 + 0.762) - Nominal Center Position of Core at Null Mechanical Specifications DC-EC Series Model Number Weight oz gm oz gm 050 DC–EC 2.19 62 0.07 2 2.10 53.5 0.75 125 DC–EC 2.44 69 0.11 3 2.93 74.5 250 DC–EC 2.58 73 0.18 5 3.80 96.5 Body Core A (Body) in mm Dimensions B (Core) in mm P in mm 19.1 0.50 12.7 1.25 31.8 0.93 23.6 2.00 50.8 1.35 34.3 500 DC–EC 2.93 82 0.28 8 5.49 139.5 3.00 76.0 2.20 55.9 1000 DC–EC 4.24 120 0.35 10 7.75 196.9 3.80 96.5 3.18 80.8 2000 DC–EC 5.47 155 0.46 13 11.12 282.5 5.30 135.0 4.88 134.6 3000 DC–EC 9.39 266 0.49 14 16.32 414.5 6.20 157.5 7.55 191.8 5000 DC–EC 11.47 325 0.60 17 20.15 511.8 6.20 157.5 9.53 242.0 10000 DC–EC 15.71 445 0.85 24 35.38 898.5 12.00 305.0 16.58 421.1 57 Captive Core Option Lead Wire Models for DC-EC and DC-SE Series 0.75 + - 0.010 (19.05 + - 0.254) Ø 0.75 + - 0.010 (19.05 + - 0.254) A 0.187 + - 0.005 (4.75 + - 0.127) Available for most models within the HCA, DC-EC, DS-SE, HCD and HCT Series P R 8 - 32UNC Standard (Metric M4 x .7) Nominal Center Position of Core at Null Mechanical Specifications DC-SE Series (See Page 58) DC-EC Series (See Page 56) Model Number Linear Range in mm Weight Assembly oz gm A in mm Dimensions P in mm R in mm 050 DC-EC ±0.050 ±1.25 2.97 84 2.48 63.0 0.84 21.3 3.78 98.0 125 DC-EC ±0.125 ±3.0 3.32 94 3.31 84.1 1.27 32.3 4.36 110.7 250 DC-EC ±0.250 ±6.0 3.53 100 4.18 84.1 1.69 42.9 4.85 123.2 500 DC-EC ±0.500 ±12.5 4.02 114 5.87 149.1 2.54 64.5 6.04 153.4 1000 DC-EC ±1.000 ±25 5.61 159 8.13 206.5 3.52 89.4 7.90 200.7 2000 DC-EC ±2.000 ±50 7.20 204 11.50 292.1 5.22 143.3 10.52 267.2 3000 DC-EC ±3.000 ±75 11.68 331 16.70 424.2 7.89 200.4 15.27 387.9 100 DC-SE 0–0.100 0–2.5 1.52 43 3.85 97.8 0.85 21.6 3.69 93.7 250 DC-SE 0–0.250 0–6.0 4.09 116 4.70 119.4 1.27 32.3 4.28 108.7 500 DC-SE 0–0.500 0–12.5 4.34 123 5.54 140.7 1.69 42.9 4.75 120.7 1000 DC-SE 0–1.000 0–25 5.51 156 7.23 183.6 2.54 64.5 6.04 153.4 2000 DC-SE 0–2.000 0–50 7.62 216 9.21 233.9 3.53 89.7 7.90 200.7 4000 DC-SE 0–4.000 0–100 10.13 287 12.59 319.8 5.22 132.6 10.52 267.2 6000 DC-SE 0–6.000 0–150 12.92 366 17.64 448.1 7.90 200.7 15.27 387.9 71 LVDT Accessories LVDT Mounting Blocks Core Connecting Rods Frequently, LVDT installations require a convenient method to mount the units. Ready-made mounting blocks are available for all LVDT Series (except XS-B). Constructed of reinforced phenolic and other nonconductive materials with a low-temperature coefficient of expansion, mounting blocks are a convenient, inexpensive and fast solution for LVDT installation. LVDT installations require a connecting rod between the LVDT core and the object whose motion is being measured. These connecting rods are fabricated from non-magnetic stainless steel to prevent distortion of the LVDT’s magnetic field. Manufactured from AISI 300 Series stainless steel, core connecting rods are threaded end to end. (Consult factory for available lengths and sizes.) To Order: use the chart below to specify the part number for the appropriate LVDT Series. Dimensions 0.25 (6.35) To Order: Specify CCR-(Length)-(LVDT Series)-(S for standard thread or M for metric thread). For example, to order a 4" rod to go with an MHR Series LVDT equipped with the optional metric thread core, specify: CCR-4-MHR-M in (mm) 1.25 (31.75) 1.00 (25.4) 0.50 (12.7) 0.06 (1.52) Saw Slot 0.63 (16.0) PSD 4-15 DC LVDT Power Supply 8-32UNC - 2B x 0.38 (9.65) Ø 0.169 (4.29) thru to center Ø0.281 (7.14) x 0.188 (4.78) 0.31 (7.87) Dia "A" (see Table 1) 1.44 (36.58) Ø0.149 (3.78) 2X 0.63 (16.0) 0.19 (4.83) The PSD 4-15 DC LVDT power supply is designed to work with all of Schaevitz® DC powered LVDTs. The module will operate on either a 115 VAC or 230 VAC input at 47 to 63 Hz. The PSD 4-15 provides the necessary ±15 VDC excitation to operate as many as four DC-EC or HCD Series LVDTs, as well as GCD Series gage heads or DC powered Schaevitz® RVDTs (see rotary section) or pressure transducers (see pressure section) that require a ±15 VDC input. The rugged, compact design can be chassis mounted and features a DIN standard rail mount for secure installation in most industrial environments. In addition, the PSD 4-15 is UL, VDE and cUL approved and CE certified. 2.22 (56.39) 0.31 (7.87) 8-32UNC - 2B x 0.50 (12.7) 2x 0.63 (16.0) LVDT Mounting Blocks Use with LVDT Series Dim. A Diameter LVDT Diameter 04560950-000 E 0.77 0.750 04560952-000 HR 0.83 0.812 04560953-000 M 0.33 8 mm 04560954-000 MHR 0.39 0.375 04560956-000 M-12 0.49 12 mm Part Number General Specifications Input Voltage ................... 115/230 VAC ±10% Input Frequency ............... 47 to 63 Hz Input Current ................... 0.1 A (max) Output Voltage ................. ±15 VDC ±0.05% Output Current ................ 100 mA continuous Ripple ................................ < 5mV. pp. Noise ................................. < 5mV. pp. Overload Protection ........ Continuous Overall Dimensions ........ 2.00 x 4.31 x 0.90 inches; (51 x 110 x 23 mm) Operating Temperature .. –25°C to 70°C MS-Type Connector Cables Consult factory for price and availability of adaptor cables for LVDTs and signal conditioners. Internet: www.schaevitz.com North America Tel: 800/745-8008 Document Fax Back: 916/431-6541 Europe Tel: (01753) 537622 72