MHR-T SERIES Miniature High-Temperature AC LVDT SPECIFICATIONS Operating temperature 392F 200C Small size and low mass core High output signal Stroke ranges from 0.025 to 1 inch AC operation from 2kHz to 20kHz Stainless steel housing Imperial or metric threaded core The MHR-T Series LVDTs are a variant of the legendary MHR Series. The MHR-T Series provide precision measurements in space restrictive applications at temperatures up to 392F 200C continuous. With a diameter of just 3/8 inch 9.5mm , and an extremely lightweight core, the MHR-T Series is ideal for applications FEATURES where excessive core weight could influence the motion with Compact size less inertia, accurate measurements at higher displacement 392F 200C continuous operation speeds are easier to achieve. The lightweight core also reduces mechanical stresses and helps preserve the structural integrity Lightweight core of the core actuation assembly. Shock and vibration tolerant Calibration certificate supplied with The high output sensitivity resulting from the close electrical each unit coupling between the coil and core provides ample signal for interfacing with practically all signal conditioners and APPLICATIONS conditioning circuits. The magnetic stainless steel housing provides electromagnetic and electrostatic shielding. High temperature applications Cylinder position feedback Available in a variety of stroke ranges from 0.025 to 1 inch, Materials testing machines the MHR-T is compatible with the full line of Measurement Space restricted installations Specialties LVDT signal conditioners. Like in most of our LVDTs, the MHR-T 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. SENSOR SOLUTIONS /// MHR-T Series Rev. 4 07/2017 Page 1 MHR-T SERIES Miniature High-Temperature 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-T 025 MHR-T 050 MHR-T 100 MHR-T 250 MHR-T 500 MHR-T 1000 Stroke range 0.025 0.64 0.05 1.27 0.10 2.54 0.25 6.35 0.5 12.7 1 25.4 Sensitivity, V/V/inch mV/V/mm 8.10 319 3.15 124 2.80 110 2.07 81.5 1.96 77.2 0.77 30.3 Output at stroke ends, mV/V (*) 202.5 157.5 280 517.5 980 770 Phase shift +21 +8 +5 +7 +7 -1 Input impedance (PRIMARY) 238 419 400 345 264 155 Output impedance (SECONDARY) 485 154 200 420 810 450 Non-linearity % of FR 50% stroke 0.15 0.15 0.15 0.15 0.15 0.20 100% stroke (maximum) 0.25 0.25 0.25 0.25 0.25 0.25 125% stroke 0.25 0.35 0.25 0.35 0 .30 (**) 0 .50 150% stroke 0.30 0.50 0.30 0.50 (**) 0.75 (**) / Null voltage (max.) 0.5% of FSO ELECTRICAL SPECIFICATIONS 2.5kHz (standard calibration) Parameter MHR-T 025 MHR-T 050 MHR-T 100 MHR-T 250 MHR-T 500 MHR-T 1000 Stroke range 0.025 0.64 0.05 1.27 0.10 2.54 0.25 6.35 0.5 12.7 1 25.4 Sensitivity, V/V/in mV/V/mm 4.36 172 2.55 100 2.40 94 1.73 68 1.60 63 0.70 27 Output at 100% stroke, mV/V (*) 109 127.5 240 432.5 800 700 Phase shift +58 +36 +30 +33 +23 +6 Input impedance (PRIMARY) 116 141 135 147 145 100 Output impedance (SECONDARY) 286 90 125 268 445 370 Non-linearity % of FR 50% stroke 0.15 0.15 0.15 0.15 0.15 0.20 100% stroke (maximum) 0.25 0.25 0.25 0.25 0.25 0.25 125% stroke 0.25 0.35 0.25 0.35 0 .30 (**) 0 .50 150% stroke 0.30 0.50 0.30 0.50 (**) 0.75 (**) / Null voltage (max) 0.5% of FSO ENVIRONMENTAL SPECIFICATIONS & MATERIALS Operating temperature -4F to +392F -20C to +200C Shock survival 1,000 g (11ms half-sine) Vibration tolerance 20 g up to 2KHz Housing material AISI 400 Series stainless steel Electrical connection Six lead-wires, 32 AWG stranded plated Copper, PTFE insulated, 3 foot 1 meter long IEC 60529 rating IP61 Notes: All values are nominal unless otherwise noted Electrical specifications are for the test frequency indicated in the table 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 (*) Unit for output at stroke ends is millivolt per volt of excitation (input voltage) (**) Requires special reduced core length SENSOR SOLUTIONS ///MHR-T Series Rev. 4 07/2017 Page 2