The LRS-18 series of LVIT (Linear Variable Inductance Transducer) spring-loaded position sensors by Alliance Sensors Group are contactless devices designed for dimension or position measuring applications in factory automation and in various industrial and commercial applications, such as: automotive testing, mil/aero test stands, robotic arms, and packaging equipment. An ideal solution for when the sensing element cannot be attached to the object being measured. LRS-18s are offered in full scale ranges from 0.5 to 4.0 inches (12.5 to 100 mm) with excellent resolution and high stroke-to-length ratios. The maximum tip force on the item being measured is 1 pound.
LRS-18 sensors have a 0.75 inch (19 mm) diameter aluminum or stainless steel body with an M18 x 1 thread and come with two hex jam nuts for easy installation in place of an 18 mm analog prox sensor. These sensors use a 0.25 inch diameter probe equipped with an AGD No. 9 contact tip, and are offered with either an axial cable or a connector. Operating from a variety of DC voltages. These sensors are available with a choice of four analog outputs and they all include ASG’s proprietary SenSet™ field recalibration feature.
For more information see the technical datasheet below.
- - Spring-loaded LVIT Technology™ (Linear Variable Inductance Transducer)
- - Ranges from 0.5 to 4.0 Inches (12.5 to 100 mm)
- - Contactless Operation Prevents Internal Wearout from Dithering or Rapid Cycling
- - Excellent Stroke-to-Length Ratio
- - Proprietary SenSet™ Field Adjustable Range Scaling
| Analog I/Os: | 0 - 5 V or 0.5 - 4.5 V DC output with 8 - 30 V input, 35 mA max. 0 - 10 V DC 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: | 12.5 mm to 100 mm (0.5 to 4.0 inches) full scale (nominal) |
| Linearity Error: | ±0.15% of Full Scale Output (FSO) typical, ±0.25% max. |
| Resolution: | 0.025% of FS |
| Operating Temperature: | -20 to 85 C (-40 to 105 C Extended Range) |
| Temperature Coefficient: | ≤±0.015% of FS/K |
| 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 |
Position Sensor Terminations LRS-18
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Electrical Termination |
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LRS |
X- |
XX- |
XXX- |
X- |
XX- |
XX |
X- |
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E- voltage |
18 - M18 |
013 (12.7 MM) |
A- Axial |
00- 1 m cable |
05- 0.5 to 4.5 V DC |
A- Aluminum |
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I- Current |
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025 |
01- 5-pin M-12 |
06- 4.5 to 0.5 V DC |
S- 300 Series SS |
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050 |
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02- 6-pin PT02 |
10- 0 to 10 V DC |
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075 |
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03- 3 m cable |
11- 10 to 0 V DC |
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100 |
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20- 4 to 20 mA |
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21 - 20 to 4 mA |
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50 - 0 to 5 V DC |
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51 - 5 to 0 V DC |
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Wiring Table |
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I/O Function |
M12 Pin |
Cable Color |
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+24 V DC input |
1 |
Red |
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Ground |
2 |
Black |
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LRSE voltage output |
3 |
Green |
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LRSI current output |
4 |
Green |
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SenSet™ |
5 |
White |
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'A' Nominal Range |
'B' Body Length |
Spring Rate |
Max. Force |
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inches [mm] |
inches [mm] |
Lbf/in [kgf/cm] |
Lbf [kgf] |
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0.5 [13] |
3.50 [88.9] |
0.75 [0.134] |
0.9 [0.41] |
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1.0 [25] |
4.00 [101.6] |
0.75 [0.134] |
0.9 [0.41] |
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2.0 [50] |
5.08 [129.0] |
0.43 [0.077] |
1.0 [0.45] |
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3.0 [75] |
6.16 [156.5] |
0.30 [0.054] |
1.0 [0.45] |
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4.0 [100] |
7.25 [184.1] |
0.23 [0.041] |
1.0 [0.45] |
If you are looking for CAD drawings of our LRS-18 sensor, simply call us at 856-727-0250 or use the online contact us form by clicking here.
Download LVIT Spring-Loaded Position Sensor LRS-18 Datasheet