LVIT Linear Position Sensor ME-7 Series

For Use In
Hydraulic and Pneumatic Cylinders
Mobile Hydraulic Equipment
ME-7 Series
LVIT Inductive Linear Position Sensor
Lower Cost, More Robust Alternative to Magnetostrictive Sensors

The ME-7 Series LVIT (Linear Variable Inductance Transducer) Position Sensors from Alliance Sensors Group has been designed as an alternative to magnetostrictive sensors and has more robust construction and a lower cost of ownership. The unit can be embedded into the end cap of industrial or mobile hydraulic cylinders and pneumatic actuators. These ME-7 Series sensors are based on a proprietary contactless inductive sensing technology that employs a 7 mm diameter probe with a shorter stroke-to-length ratio than most other technologies, and uses a gun drilled hole in the cylinder rod for sensing the rod position rather than requiring a ring magnet assembly.


An ME-7 has a 1.89 inch (48 mm) diameter sensor head with an o-ring and back up ring in a groove, so it can be mounted in the same cavity in the cylinder cap and locked in with radial set screws just like a magnetostrictive sensor. Because they are contactless, ME-7 Series sensors do not wear out and have no output signal deterioration over the life of the sensors, and because it uses an inductive coil, an ME-7 sensor can withstand much greater shock and vibrations than other technologies. A very useful element of the ME-7 sensors is ASG’s proprietary SenSet™ feature whereby a sensor’s analog output can be adjusted in the field after installation to match the range of motion of the cylinder rod.

For more information see the technical datasheet below.

Features
  • - LVIT Technology™ (Linear Variable Inductive Transducer)
  • - Senses Cylinder Rod…NO MAGNET REQUIRED
  • - Extremely Robust Construction
  • - Easily Adapts to Existing Cylinder Designs
  • - High Resolution with Choice of Analog I/Os
  • - Contactless Sensing for Long Sensor Life
  • - Proprietary SenSet™ for Field Adjustable Range Scaling
Specifications
Analog I/Os: 0 – 5 V or 0.5 – 4.5 V output with 8 – 30 V input, 35 mA max. 0 – 10 V output with 12 – 30 V input, 35 mA max. 4 – 20 mA (3-wire) output with 18 – 30 V input, 60 mA max. (75 C max.)
Measuring Ranges: 0-25 mm to 0-900 mm (1 to 36 inches) Full Scale (nominal)
Linearity Error: ±0.15% of Full Scale Output (FSO) typical, ±0.25% of FSO max.
Resolution: 0.025% of FSO
Update Rate: 300 Hz nominal
Operating Temperature: -20 to 85 C (-40 C to 105 C Extended Range)
Temperature Coefficient: ≤±0.015% of FS/deg C
Operating Pressure: 5000 psig (350 bar) max operating, 7500 psig (520 bar) proof
Vibration: 5-20 Hz 0.5 inch p-p; 20-2000 Hz 4.2 g p-p
Shock: 1000 g, 11 msec
Terminations: IEC IP-67
Humidity: 95% RH, non-condensing
Ordering Info Table


Series

Output
Type

Probe
Dia.

Range
(mm)

Body
Diameter


Termination


Output

Housing
Material

Bore
Size

Bore
Material

ME

X-

X-

XXX-

XX-

XX-

XX-

X

XX-

XX

 

E -Voltage

7 -7 mm

025 - 300 

(25 mm increments)

48 - 48 mm

00 - 1 m cable

05 - 0.5-4.5 V 

A - Alum.

08 - 8 (25-100 ranges)

AL - Alum.

 

I - Current

 

300 --500

(50 mm increments)

 

01 - 1 foot cable

06 - 4.5 to 0.5 V 

S - 300 Series SS

95 - 9.5 (125-200 ranges)

AS - Alloy Steel

 

 

 

500 - 900

(100 mm increments)

 

 

10 - 0 to 10.0 V 

 

11 - 11 (225-900)

CS - Carbon Steel

 

 

 

 

 

 

11 - 10.0 to 0 V 

 

 

SS - Stainless Steel

 

 

 

 

 

 

20 - 4 to 20 mA

 

 

 

 

 

 

 

 

 

21 - 20 to 4 mA

 

 

 

 

 

 

 

 

 

50 - 0 to 5 V 

 

 

 

 

 

 

 

 

 

51 - 5 to 0 V 

 

 

 

 

Configuration Table

Wiring Table

 I/O Function

Cable Color

+24 V DC input

Red

Ground

Black

MEE voltage output

Green

MEI current output

Green

SenSet

White

 

Nominal Range

Dim. “A” In. [mm]

25 mm

1.0 [25.4]

50 mm

2.0 [50.8]

75 mm

3.0 [76.2]

100 mm

4.0 [101.6]

125 mm

5.0 [127.0]

150 mm

6.0 [152.4]

200 mm

8.0 [203.2]

250 mm

10.0 [254.0]

300 mm

12.0 [304.8]

350 mm

14.0 [355.6]

400 mm

16.0 [406.4]

450 mm

18.0 [457.2]

500 mm

20.0 [508.0]

600 mm

24.0 [609.6]

750 mm

30.0 [762.0]

900 mm

36.0 [914.4]

 

If you are looking for CAD drawings of our ME-7 sensor, simply call us at 856-727-0250 or use the online contact us form by clicking here.