J-18
J
DISPLACEMENT
The LD300 Series provides our
longest stroke length—up to
±300 mm (12")—in accordance with
the linear variable differential
transformer principle. These AC
AVDTs are highly accurate.
Special winding techniques ensure
excellent linearity. The components
are then packaged in a rugged
housing and the transformer core
is fitted with an extension rod and
very-low-friction nylon bearings that
act as guides. The transducer
features a spring-return armature.
With their long life, infinite resolution,
versatility, and excellent repeatability,
these units are suitable for many
demanding industrial applications.
SPECIFICATIONS
Linearity: 0.25% FS
Sensitivity: (mV/V/mm) see chart on
next page (actual output supplied with
each unit)
Excitation: 1 to 10 Vrms
Excitation Frequency: 1 to 10 kHz
Energizing Current:
See chart on next page
Frequency Response: 2 ms
Zero Offset: 0.5% FS
Thermal Effect:
Zero Sensitivity: 0.008%/°C,
0.005%/°C
Compensated Temperature Range:
-40 to 100°C (-40 to 212°F)
Operating Temperature Range:
-40 to 100°C (-40 to 212°F)
Electrical Connection: 2.7 m (9')
shielded cable
Calibration: Calibrated at 5 V, 5 kHz
with 100K load at 20°C (68°F)
Mechanical
Threaded Core: LD300-15 (M3);
LD300-25, -50 (M4); LD300-100,
-150, -250, -300 (M5)
Core Material: Ni/Fe—Radio Metal 50
Case Material: 400 Series SS
Weight: See chart on next page
Electrical Connections:
Red and Blue: Excitation (AC)
White: Signal
Green: Signal ground
Red and White: In phase for
inward displacement
⻬ Rugged Stainless
Steel Case
⻬ LVDT—Infinite
Resolution
⻬ 0.25% Linearity
⻬ Spring-Loaded Armature
⻬ Works with Standard
AC LVDT Signal
Conditioning Modules
HIGH-ACCURACY AC LONG-STROKE
DISPLACEMENT TRANSDUCERS
LD300-100, $765, shown
smaller than actual size.
LDX-3A. signal conditioner,
$480. See page J-32.
LD300 Series
±15 to ±300 mm
(±0.6 to ±12")
$
480
Starts at
LD300-300, $1125, shown
smaller than actual size.
J-19
To Order
(Specify Model Number)
LINEAR STROKE
MODEL NO. mm (in) PRICE COMPATIBLE INSTRUMENTS*
LD300-15 ±15 (0.6) $480 DP-LVDT, LDX-2, LDX-3A, LDX-4
LD300-25 ±25 (1.0) 485 DP-LVDT, LDX-2, LDX-3A, LDX-4
LD300-50 ±50 (2.0) 630 DP-LVDT, LDX-2, LDX-3A, LDX-4
LD300-100 ±100 (4.0) 765 DP-LVDT, LDX-2, LDX-3A, LDX-4
LD300-150 ±150 (6.0) 900 DP-LVDT, LDX-3A, LDX-4
LD300-250 ±250 (10.0) 990 DP-LVDT, LDX-2, LDX-3A, LDX-4
LD300-300 ±300 (12.0) 1125 DP-LVDT, LDX-3A, LDX-4
MAXIMUM WEIGHT
STROKE BODY/ CORE SPRING SENSITIVITY ENERGIZING OUTPUT I/O
MODEL NO. mm (in) LEADS ASSEMBLY RATE FORCE* mV/V/mm CURRENT IMPED. PHASE
LD300-15 ±22 (.886) 60 g 10 g 3.30 g/mm 110 34.0 6 mA 220 Ω 7°
LD300-25 ±35 (1.378) 96 g 18 g 2.34 g/mm 150 20.0 4 mA 210 Ω 9°
LD300-50 ±62 (2.441) 170 g 25 g 1.95 g/mm 185 9.3 4 mA 160 Ω 10°
LD300-100 ±125 (4.921) 600 g 54 g 1.19 g/mm 120 5.0 6 mA 160 Ω 7°
LD300-150 ±178 (7.007) 900 g 78 g 1.00 g/mm 120 3.5 5 mA 150 Ω 7°
LD300-250 ±279 (10.884) 1300 g 106 g 2.1 6 mA 110 Ω 5°
LD-300-300 ±330 (12.992) 1600 g 122 g 1.7 9 mA 90 Ω 2°
CANNOT BE
SPRING LOADED
* At electrical zero, in grams.
LINEAR STROKE DIMENSIONS: mm (in) AT ELECTRICAL ZERO
MODEL NO. mm (in) A B C D E F G
LD300-15 ±15 (0.6)
45 (1.76) 97 (3.78) 20.6 (0.78) 3.17 (0.12) 19 (0.74) M3 3.5 (0.14)
LD300-25 ±25 (1.0) 60 (2.34) 156 (6.08) 20.6 (0.78) 4.0 (0.16) 19 (0.74) M4 3.5 (0.14)
LD300-50 ±50 (2.0) 85 (3.32) 280 (10.92) 20.6 (0.78) 4.0 (0.16) 19 (0.74) M4 3.5 (0.14)
LD300-100 ±100 (4.0) 145 (5.66) 450 (17.55) 20.6 (0.78) 4.75 (0.19) 25 (0.98) M5 4.5 (0.18)
LD300-150 ±150 (6.0) 197 (7.68) 552 (21.53) 19 (0.74) 4.75 (0.19) 25 (0.98) M5 4.5 (0.18)
LD300-250 ±250 (10.0) 298 (11.62) 755 (29.45) 19 (0.74) 4.75 (0.19) 25 (0.98) M5 4.5 (0.18)
LD300-300 ±300 (12.0) 349 (13.61) 857 (33.42) 19 (0.74) 4.75 (0.19) 25 (0.98) M5 4.5 (0.18)
AC-POWERED LVDT TRANSDUCERS
* See pages J-31 through J-35 for compatible instruments.
Comes with complete operator’s manual.
Ordering Example: LD300-100, 100 mm (4.0") stroke LVDT with spring-loaded core, $765.
Dimensions: mm (in)
MOST POPULAR MODELS HIGHLIGHTED!
SPECIFICATIONS
C
D
BA
37
(1.443)
G
VARIABLE DIMENSIONS STATED BELOW
F
E
7.5
(2.92)
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