LAT 100 / LDT 200 SERIES
LVDT DISPLACEMENT TRANSDUCERS
he basic design of an LVDT comprises a primary coil winding and two
identical secondary windings on a common bobbin, and a moveable
T
magnetic core. The primary winding of the LVDT is excited with a low
voltage AC supply. The two secondary windings are connected so that their
combined output represents the difference in the voltage induced into them. With
the armature in the central position, the output is zero. Movement of the armature
from this position produces an output which changes in phase and magnitude
according to the armature displacement. The LAT is a compact, AC energized
high performance transducer. It will deliver its best performance when energized
with between 0.5 Vac and 7 Vac at 5KHz using a high quality carrier amplifier.
The LDT transducer operates from simple unregulated power supplies of +20 to
+40 Vdc or dual +/-10 to +/-20 Vdc and generates two 5 Vdc anti-phase output
signals.
SPECIFICATIONS
STROKE:
LINEARITY:
MATERIAL:
TEMPERATURE RANGE:
(OPERATING)
OUTPUT:
OUTPUT LOAD:
EXCITATION:
CABLE:
OPTIONS:
±0.5 to ±18.5 Inch
0.5% F.S standard, 0.25% or 0.1%
available on some models
Stainless Steel
-58° F to 257° F
0.8 to 3.7 V/V - LAT
Two Anti-phase ±5 Vdc nominal
for working stroke - LDT
100K Ohms (Optimum) - LAT
2K Ohms (±10 to ±20 V) or 20K
Ohms (+20 to +40 V)
0.5 Vac to 7 Vac rms reg. - LAT
±10 to ±20 Vdc unregulated or
+20 to +40 Vdc unreg. @ 25 mA
6.5 Ft
Premium Linearity
Matched Sensitivity
Sealing against Moisture
Axial Bendix Connector
Temp Option to 392+F
0-10 or 10-0 Vdc Output
2 Wire, 4-20 or 20-4 mA Output
• CHOICE OF ARMATURE
• +/-0.5" TO +/-18" STROKE
• AC OR DC OPERATION
• UP TO .1% LINEARITY
LVDT SERIES
COOPER INSTRUMENTS & SYSTEMS
AVAILABLE RANGES LAT 100 Unguided Armature
Stroke L” X” Body Wght Arm Wght Output
±0.5 5.0 1.7 170 gms 35 gms 0.8 v/v
±1.0 6.1 2.7 227 gms 50 gms 0.9 v/v
±2.0 10.6 3.2 369 gms 57 gms 1.6 v/v
±3.0 15.0 4.7 454 gms 63 gms 1.5 v/v
±4.0 16.8 5.2 568 gms 71 gms 3.2 v/v
±6.0 24.3 7.2 824 gms 114 gms 2.4 v/v
±8.0 31.8 10.2 1193 gms 145 gms 1.5 v/v
www.cooperinstruments.com sales@cooperinstruments.com
1-800-344-3921
LAT 101
LAT 102
LAT 100
2/25/08
LAT 100 / LDT 200 SERIES
LVDT DISPLACEMENT TRANSDUCERS
AVAILABLE RANGES LAT 101 Spring Return Armature
Stroke L” X” Body Wght Spring Rate Output
±0.5" 5.25 1.5 184 gms 22 gms/cm 0.8 v/v
±1.0 6.35 2.5 227 gms 26 gms/cm 0.9 v/v
±2.0 10.85 3.0 398 gms 37 gms/cm 1.6 v/v
±3.0 15.25 4.5 483 gms 39 gms/cm 1.5 v/v
AVAILABLE RANGES LAT 102 Captive Guided Armature
Stroke L” X” Body Wght Output
±0.5 6.0 1.5 284 gms 0.8 v/v
±1.0 7.1 2.5 340 gms 0.9 v/v
±2.0 11.6 3.0 511 gms 1.6 v/v
±3.0 16.0 4.5 653 gms 1.5 v/v
±4.0 17.8 5.0 710 gms 3.2 v/v
±6.0 25.3 7.0 1022 gms 2.4 v/v
±8.0 32.8 10.0 1420 gms 1.5 v/v
±10.0 40.5 12.0 1590 gms 2.0 v/v
±15.0 56.5 16.0 2130 gms 3.0 v/v
±18.5 67.0 20.0 2528 gms 3.7 v/v
LVDT SERIES
AVAILABLE RANGES LDT 200 Unguided Armature
Stroke L” X” Wght Body Wght Arm
±0.5" 6.9 1.71 213 gms 28 gms
±1.0" 8.0 2.7 270 gms 57 gms
±2.0" 12.5 3.2 369 gms 71 gms
±3.0" 16.9 4.7 497 gms 85 gms
±4.0" 18.7 5.2 625 gms 99 gms
±6.0" 26.2 7.2 852 gms 114 gms
±8.0" 33.7 10.2 1250 gms 142 gms
AVAILABLE RANGES LDT 201 Spring Return Armature
Stroke L” X” Body Wght Spring Rate
±0.5" 7.15 1.5 227 22 gms/cm
±1.0" 8.25 2.5 284 26 gms/cm
±2.0" 12.75 3.0 398 37 gms/cm
±3.0" 17.15 4.5 511 39 gms/cm
AVAILABLE RANGES LDT 202 Captive Guide Armature
Stroke L” X” Body Wght
±0.5" 7.65 1.5 340 gms
±1.0" 8.75 2.5 398 gms
±2.0" 13.25 3.0 511 gms
±3.0" 17.65 4.5 625 gms
±4.0" 19.45 5.0 767 gms
±6.0" 26.95 7.0 1022 gms
±8.0" 34.45 10.00 1448 gms
±10" 42.00 12.00 1676 gms
±15" 58.00 16.00 2215 gms
±18.5" 68.50 20.00 2613 gms
LDT 200
COOPER INSTRUMENTS & SYSTEMS
LDT 201
LDT 202
www.cooperinstruments.com sales@cooperinstruments.com
1-800-344-3921