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AC-Operated, Short-Stroke Unguided Armature

"SUM" Sealed LVDT Series (AC)

Designed for use while submerged under fresh water and most other non-corrosive liquids and gases, these LVDT's are extensively used in industrial and R&D applications. The stainless-steel body is hermetically sealed and has a cable exit which is double-sealed using an internal rubber gland plus a polyolefin shrink tube covering the cable and transducer body.  An alternative MI stainless-steel sheathed cable option is available for use under high liquid pressures (as in soil testing apparatus, hydraulics, vessel studies, etc.) General Specifications are given below. Go to LVDT SELECTION GUIDE AC "SUM" Series Dimension "X" is at the Electrical Zero Position LVDT Model Nom. Linear Range (in. / mm) Dimensions (in. / mm) Arma- ture Weight (oz. / g) Total Weight (oz. / g) Nom. Sensiti- vity (V/V at f.s.) "L" "X" "D" "T" DS80SUM ±0.04 ±1 1.82 46.35 0.69 17.4 0.315 8 0.50 12.7 0.05 1.3 0.7 20 0.07 DS200SUM ±0.1 ±2.5 2.07 52.5 0.77 19.5 0.374 9.5 0.55 14 0.05 1.4 1.0 28 0.19 DS400SUM ±0.2 ±5 2.17 55 1.04 26.5 0.374 9.5 0.73 18.5 0.06 1.8 1.1 32 0.36 DS600SUM ±0.3 ±7.5 2.75 70 1.18 30 0.374 9.5 0.73 18.5 0.06 1.8 1.3 36 0.42 DS800SUM ±0.4 ±10 2.91 74 1.28 32.5 0.374 9.5 0.73 18.5 0.07 1.9 1.4 40 0.58 DS1000SUM ±0.5 ±12.5 3.54 90 1.38 35 0.374 9.5 0.73 18.5 0.08 2.3 1.8 50 0.78   General AC "SUM" Specifications  [Top ] (See also the statement on LVDT specifications) Supply Requirements 0.5 VAC to 7 VAC (RMS), 2 to 10 kHz sinusoidal Calibrated Supply (Excitation) 5 VAC (RMS) at 5 kHz sinusoidal, 30 mA Armature UNGUIDED Linearity (% error of full scale, worst case) ±0.5%* Phase Shift Typically 10° at 5-VAC, 5-kHz excitation Output Load (optimum) 100 kΩ Temperature Coefficient (Zero and Span) ±0.01% of full scale/°C (±0.005% of full scale/°F) Operating Temperature Range -20° C to +125° C (-4° F to +257° F) Operating Pressure 500 psi (sealed onto cable outer sleeve) Electrical Termination 6.5 ft. (2 m) shielded cable * ±0.25% and ±0.1% linearity are optional on some models (contact the factory for details).

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