SENSOR SOLUTIONS /// MHR Series Rev. 8 07/2017
Page 1
FEATURES
Compact size
Lightweight core
±0.25% linearity (100% stroke)
Shock and vibration tolerant
Stainless steel case
Calibration certificate supplied with
each unit
APPLICATIONS
X, Y, Z stage position feedback
Wire-die bonding machines
Cylinder position feedback
Voice coil testing
Materials testing machines
Space restricted installations
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
helps preserve the structural integrity of the core
actuation assembly.
The high output sensitivity resulting from the close
electrical coupling between the coil and core provides
ample signal for interfacing with practically all signal
conditioners and conditioning circuits. The magnetic
stainless steel housing provides electromagnetic and
electrostatic shielding.
The high temperature operation (200oC) model, MHR-T
is available for stroke ranges of ±0.025 to ±1 inch. A High
pressure (vented case) model, MHR-V is also available.
The MHR is compatible with the full line of Measurement
Specialties LVDT signal conditioners.
Like in most of our LVDTs, the MHR 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.
MHR SERIES
Miniature General Purpose AC LVDT
SENSOR SOLUTIONS /// MHR Series Rev. 8 07/2017
Page 2
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)
MHR 005
MHR 010
MHR 025
MHR 050
MHR 100
MHR 250
MHR 500
MHR 1000
MHR 2000
±0.005
[±0.13]
±0.010
[±0.25]
±0.025
[±0.64]
±0.05
[±1.27]
±0.10
[±2.54]
±0.25
[±6.35]
±0.5
[±12.7]
±1
[±25.4]
±2
[±50.8]
[mV/V/mm]
8.70
[343]
6.05
[238]
8.10
[319]
3.15
[124]
2.80
[110]
2.07
[81.5]
1.96
[77.2]
0.77
[30.3]
0.49
[19.3]
43.5
60.5
202.5
157.5
280
517.5
980
770
980
+38°
+20°
+21°
+8°
+5°
+7°
+7°
-1°
-15°
84Ω
165Ω
238Ω
419Ω
400Ω
345Ω
264Ω
155Ω
504Ω
302Ω
300Ω
485Ω
154Ω
200Ω
420Ω
810Ω
450Ω
1780Ω
±% of FR
0.20
0.10
0.15
0.15
0.15
0.15
0.15
0.20
/
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.50
0.30
0.35
0.25
0.35
0.25
0.35
0 .30 (**)
0 .50
/
0.40
0.35
0.30
0.50
0.30
0.50 (**)
0.75 (**)
/
/
2.5% FRO
1.0% FRO
0.5% of FRO
ELECTRICAL SPECIFICATIONS @ 2.5kHz (standard calibration)
MHR 005
MHR 010
MHR 025
MHR 050
MHR 100
MHR 250
MHR 500
MHR 1000
MHR 2000
±0.005
[±0.13]
±0.010
[±0.25]
±0.025
[±0.64]
±0.05
[±1.27]
±0.10
[±2.54]
±0.25
[±6.35]
±0.5
[±12.7]
±1
[±25.4]
±2
[±50.8]
[mV/V/mm]
3.19
[126]
3.36
[132]
4.36
[172]
2.55
[100]
2.40
[94]
1.73
[68]
1.60
[63]
0.70
[27]
0.47
[19]
16
33.6
109
127.5
240
432.5
800
700
940
+73°
+59°
+58°
+36°
+30°
+33°
+23°
+6°
+3°
59Ω
78Ω
116Ω
141Ω
135Ω
147Ω
145Ω
100Ω
304Ω
260Ω
192Ω
286Ω
90Ω
125Ω
268Ω
445Ω
370Ω
13620Ω
±% of FR
0.20
0.10
0.15
0.15
0.15
0.15
0.15
0.20
/
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.30
0.35
0.25
0.35
0.25
0.35
0.30 (**)
0 .50
/
0.40
0.35
0.30
0.50
0.30
0.50 (**)
0.75 (**)
/
/
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
MHR SERIES
Miniature General Purpose AC LVDT
SENSOR SOLUTIONS /// MHR Series Rev. 8 07/2017
Page 3
ENVIRONMENTAL SPECIFICATIONS & MATERIALS
Operating temperature
-65°F to +300°F [-55°C to 150°C]
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 Copper, PTFE insulated, 1 foot [0.3m] long (longer wires optional)
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
FRO (Full Range Output): Algebraic difference in outputs measured at the ends of the range
MECHANICAL SPECIFICATIONS
Parameter
MHR 005
MHR 010
MHR 025
MHR 050
MHR 100
MHR 250
MHR 500
MHR 1000
MHR 2000
Body length “A”
0.375
[9.5]
0.535
[13.6]
0.660
[16.8]
0.815
[20.7]
0.990
[25.1]
1.850
[47.0]
3.300
[83.82]
5.600
[142.2]
8.000
[203.2]
Core length “B”
0.180
[4.6]
0.233
[5.9]
0.400
[10.2]
0.500
[12.7]
0.625
[15.9]
1.125
[28.6]
2.000
[50.8]
3.000
[76.2]
3.00
[76.2]
Body weight oz
[g]
0.07
[2]
0.11
[3]
0.18
[5]
0.21
[6]
0.21
[6]
0.32
[9]
0.60
[17]
0.92
[26]
1.4
[40]
Core weight oz
[g]
0.004
[0.1]
0.007
[0.2]
0.016
[0.5]
0.016
[0.5]
0.025
[0.7]
0.032
[0.9]
0.056
[1.6]
0.088
[2.5]
0.088
[2.5]
Dimensions are in inch [mm]
MHR SERIES
Miniature General Purpose AC LVDT
SENSOR SOLUTIONS /// MHR Series Rev. 8 07/2017
Page 4
WIRING INFORMATION
Connect Blue to Green for differential output
ORDERING INFORMATION
Description
Model
Part Number
Description
Model
Part Number
±0.005 inch LVDT
MHR 005
02560405-000
±0.25 inch LVDT
MHR 250
02560410-000
±0.010 inch LVDT
MHR 010
02560406-000
±0.5 inch LVDT
MHR 500
02560411-000
±0.025 inch LVDT
MHR 025
02560407-000
±1 inch LVDT
MHR 1000
02560412-000
±0.05 inch LVDT
MHR 050
02560408-000
±2 inch LVDT
MHR 2000
02561033-000
±0.10 inch LVDT
MHR 100
02560409-000
OPTIONS
5.0 kHz calibration
XXXXXXXX-002
10 kHz calibration
XXXXXXXX-003
Metric threaded core
XXXXXXXX-006
10 foot long lead-wires
Consult factory
XXXXXXXX-040
Note: Add multiple option dash numbers together to determine proper ordering suffix
Example: MHR 1000, ±1 inch, with 5 kHz calibration and metric threaded core, P/N 02560412-008
ACCESSORIES
Core connecting rod, 6 inches long, 1-72 threads
05282945-006
Core connecting rod, 12 inches long, 1-72 threads
05282945-012
Core connecting rod, 24 inches long, 1-72 threads
05282945-024
Core connecting rod, 36 inches long, 1-72 threads
05282945-036
Core connecting rod, 6 inches long, M2x0.4 metric threads
05282976-006
Core connecting rod, 12 inches long, M2x0.4 metric threads
05282976-012
Mounting block
04560954-000
MHR SERIES
Miniature General Purpose AC LVDT
SENSOR SOLUTIONS /// MHR Series Rev. 8 07/2017
Page 5
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