MHR SERIES Miniature General Purpose AC LVDT SPECIFICATIONS Small size and low mass core High output signal Stroke ranges from 0.005 to 2 inches AC operation from 2kHz to 20kHz Stainless steel housing Imperial or metric threaded core The legendary MHR Series LVDTs provide precision measurements in space restrictive applications. With a diameter of just 3/8 inch 9.5mm , and an extremely lightweight core, the MHR Series is ideal for applications where excessive core weight could influence the motion with less inertia, accurate measurements at higher displacement speeds are easier to achieve. The lightweight core also reduces mechanical stresses and FEATURES helps preserve the structural integrity of the core actuation assembly. Compact size Lightweight core The high output sensitivity resulting from the close 0.25% linearity (100% stroke) electrical coupling between the coil and core provides Shock and vibration tolerant ample signal for interfacing with practically all signal Stainless steel case conditioners and conditioning circuits. The magnetic Calibration certificate supplied with stainless steel housing provides electromagnetic and each unit electrostatic shielding. o The high temperature operation (200 C) model, MHR-T APPLICATIONS is available for stroke ranges of 0.025 to 1 inch. A High pressure (vented case) model, MHR-V is also available. X, Y, Z stage position feedback The MHR is compatible with the full line of Measurement Wire-die bonding machines Specialties LVDT signal conditioners. Cylinder position feedback Voice coil testing Like in most of our LVDTs, the MHR windings are vacuum Materials testing machines impregnated with a specially formulated, high Space restricted installations 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. SENSOR SOLUTIONS /// MHR Series Rev. 8 07/2017 Page 1 MHR SERIES Miniature General Purpose AC LVDT PERFORMANCE SPECIFICATIONS ELECTRICAL SPECIFICATIONS (common) Input voltage 3 VRMS sine wave Input frequency 2kHz to 20kHz Test frequency 2.5kHz (standard) ELECTRICAL SPECIFICATIONS 10kHz (recommended operation) Parameter MHR 005 MHR 010 MHR 025 MHR 050 MHR 100 MHR 250 MHR 500 MHR 1000 MHR 2000 0.005 0.010 0.025 0.05 0.10 0.25 0.5 1 2 Stroke range 0.13 0.25 0.64 1.27 2.54 6.35 12.7 25.4 50.8 Sensitivity V/V/inch 8.70 6.05 8.10 3.15 2.80 2.07 1.96 0.77 0.49 mV/V/mm 343 238 319 124 110 81.5 77.2 30.3 19.3 Output at stroke ends 43.5 60.5 202.5 157.5 280 517.5 980 770 980 mV/V (*) Phase shift +38 +20 +21 +8 +5 +7 +7 -1 -15 Input impedance 84 165 238 419 400 345 264 155 504 (PRIMARY) Output impedance 302 300 485 154 200 420 810 450 1780 (SECONDARY) Non-linearity % of FR 50% stroke 0.20 0.10 0.15 0.15 0.15 0.15 0.15 0.20 / 100% stroke (max) 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.50 125% stroke 0.30 0.35 0.25 0.35 0.25 0.35 0 .30 (**) 0 .50 / 150% stroke 0.40 0.35 0.30 0.50 0.30 0.50 (**) 0.75 (**) / / Null voltage (max.) 2.5% FRO 1.0% FRO 0.5% of FRO ELECTRICAL SPECIFICATIONS 2.5kHz (standard calibration) Parameter MHR 005 MHR 010 MHR 025 MHR 050 MHR 100 MHR 250 MHR 500 MHR 1000 MHR 2000 0.005 0.010 0.025 0.05 0.10 0.25 0.5 1 2 Stroke range 0.13 0.25 0.64 1.27 2.54 6.35 12.7 25.4 50.8 Sensitivity V/V/in 3.19 3.36 4.36 2.55 2.40 1.73 1.60 0.70 0.47 mV/V/mm 126 132 172 100 94 68 63 27 19 Output at stroke ends, 16 33.6 109 127.5 240 432.5 800 700 940 mV/V (*) Phase shift +73 +59 +58 +36 +30 +33 +23 +6 +3 Input impedance 59 78 116 141 135 147 145 100 304 (PRIMARY) Output impedance 260 192 286 90 125 268 445 370 13620 (SECONDARY) Non-linearity % of FR 50% stroke 0.20 0.10 0.15 0.15 0.15 0.15 0.15 0.20 / 100% stroke (max) 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 125% stroke 0.30 0.35 0.25 0.35 0.25 0.35 0.30 (**) 0 .50 / 150% stroke 0.40 0.35 0.30 0.50 0.30 0.50 (**) 0.75 (**) / / Null voltage (max) 3% FRO 1.5% FRO 0.5% of FRO (*) Unit for output at stroke ends is millivolt per volt of input voltage (**) Requires special reduced core length SENSOR SOLUTIONS /// MHR Series Rev. 8 07/2017 Page 2