Gefran LT Data Sheet
LT
RECTILINEAR DISPLACEMENT TRANSDUCER
Main features
• The transducer has been improved in order to
guarantee greater reliability under all conditions
• A sturdier structure makes the LT series even stronger
for applications with heavy vibration
• Installation is made simpler by the absence of electrical signal variation in output, outside the Theoretical
Electrical Stroke
• The new grooves provide an excellent alternative to the
usual system of fastening with brackets
• Ideal for applications on plastic injection presses, vertical presses, and on many other processing machines
TECHNICAL DATA MECHANICAL DIMENSIONS
Useful electrical stroke (C.E.U.)
Independent linearity
(within C.E.U.)
Resolution Infinite
Repeatability 0.01 mm
Electrical connections LTM
Displacement speed Standard ≤ 10 m/s
Protection level IP60 (IP65 on request)
Life
Displacement force
Vibrations
Shock 50 g, 11ms.
Acceleration 200 m/s2 max (20g)
Tolerance on resistance ± 20%
Recommended cursor current < 0.1 µA
Maximum cursor current 10mA
Maximum applicable voltage 60V
Electrical isolation >100MΩ at 500V=, 1bar, 2s
Dielectric strength < 100µA at 500V~, 50Hz, 2s, 1bar
Dissipation at 40°C
(0W at 120°C)
Thermal coefficient of resistance -200...+ 200 ppm/°C typical
Actual Temperature Coefficient
of the output voltage
Working temperature -30...+100°C
Storage temperature -50...+120°C
Material for transducer case Anodised aluminium Nylon 66 G
Material for pull shaft Stainless steel AISI 303
Mounting
50/75/100/130/150/175/200/225/275/300/
350/375/400/450/500/600/650/750/900
± 0.05%
4-pole connector DIN43650
LTH
3-pole connector
LTB
5-pole connector DIN43322
LTF
1 meter 3-pole shielded cable
> 25x106 m strokes, or
> 100x106 maneuvers, whichever is less
(within C.E.U.)
3,5N (typical) IP60 version
15N (typical) IP65 version
5...2000Hz,
Amax =0.75 mm
amax. = 20 g
3W
≤ 5 ppm/°C typical
Brackets with adjustable distance between centers or with M5 screw ISO4017-
DIN933
Tightening torque
240Ncm max
Limiter nut
Do not remove
Important: all the data reported in the catalogue linearity, lifetime, temperature coefficient are valid for a sensor utilization as a ratiometric device with a
max current across the cursor Ic ≤ 0.1 mA
Mounting with M5 screw
ISO4017-DIN933
Dimensions of
screw head groove
ELECTRICAL / MECHANICAL DATA
2
3
1
2
1
3
MODEL
Useful electric stroke (C.E.U.) +3/-0 mm 50 75 100 130 150 175 200 225 275 300 350 375 400 450 500 600 650 750 900
Theoretical electrical stroke (C.E.T.) ±1 mm C.E.U. + 3 C.E.U. + 4 355 380 406 457 508 609 660 762 914
Resistance (C.E.T.) kΩ 5 5 5 5 5 5 5 5 5 10 10
Mechanical stroke (C.M.) mm C.E.U. + 9 C.E.U. + 10 361 386 412 463 518 619 670 772 924
Case length (A) mm C.E.U. + 63 C.E.U. + 64 415 440 466 517 572 673 725 826 978
50 75 100 130 150 175 200 225 275 300 350 375 400 450 500 600 650 750 900
ELECTRICAL CONNECTIONS
Connector
output
Connection side
• INSTALLATION INSTRUCTIONS
• Make the specified electrical connections (DO NOT use the transducer as a variable resistance)
• When calibrating the transducer, be careful to set the stroke so that the output does not drop below 1% or rise above 99% of the
voltage level.
Cable
output
blue
yellow
brown
3
2
1
Output Output
3
1
2
1 m 3-pole
cable
Output
Output
ORDER CODE
Displacement transducer
4-pole connector output
DIN43650 ISO4400
3-pole connector
output
5-pole connector output
DIN43322
3-pole PVC cable output
3x0,25 1m
LT
M
H
Linearity curve to be
attached
L
Cable length: 1 m 0
No certificate attached 0
B
Cable length: 2 m 2
Cable length: 3 m 3
F
Other lengths on request ---
0 0 0 X 0 0 0 X
Model
IP60 version S
Color of plastic heads
(green)
0
IP65 version P
Example:LT - M - 0300 - S 000X000X00
LTdisplacement transducer, 4-pole connector output DIN43650 - ISO 4400, useful electrical stroke (C.E.U.) 300mm. IP60 protection, no
certificate attached, green plastic components.
0
0
ACCESSORIES
STANDARD Code
LT mounting kit, 2 brackets, screws PKIT009
ON REQUEST Code
LTM 4-pole 90° radial female connector DIN43650 IP65 PG9 clamp for ø6-ø8mm cable CON006
LTH 3-pole axial female connector IP40 clamp for ø4-ø6mm cable CON002
LTB 5-pole axial female connector DIN43322 IP40 clamp for ø4-ø6mm cable CON011
LTB 5-pole axial female connector DIN43322IP65 PG7 clamp for ø4-ø6mm cable CON012
LTB 5-pole 90° radial female connector DIN43322 IP40 clamp for ø4-ø6mm cable CON013
Ball connection joint PKIT015
GEFRAN spa reserves the right to make any kind of design or functional modification at any moment without prior notice
DTS_LT_02-2019_ENG
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