Alliance Sensors Group's LV-45 series LVIT (Linear Variable Inductance Transducer) position sensors are specifically targeted for measuring applications requiring rugged devices, whether measuring position of steam turbine valves, mounted in a paper mill head box or calender roll stand, or operating outdoors fastened to a bridge or structure.
LV-45 sensors use a contactless inductive technology that allows them to replace other technology sensors like potentiometers and DC-LVDTs in most applications. With a simple coil design, a captive connecting rod, and a thick-walled housing, the sensors are both shorter and more robust than their DC-LVDT counterparts while operating over a wider temperature range. They can withstand the vibration and shock levels found in mills and power plants, as well as the temperature and humidity found in outdoor applications. Once a sensor has been installed, ASG’s SenSet™ range adjustment process permits a user to match the sensor’s zero and full scale output to the workpiece’s actual range of motion.
For more information see the technical datasheet below.
- - LVIT Technology™ (Linear Variable Inductance Transducer)
- - Ranges from 4 Inches to 18 Inches (100 to 450 mm)
- - 1.75 inch (44.5 mm) Diameter Heavy Wall Aluminum or Stainless Steel Body
- - 1/2 Inch Diameter Connecting Rod with 1/2-20 Male Thread
- - Radial or Axial Connector or Cable Terminations
- - Proprietary SenSet™ Field Adjustable Range Scaling
| 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: | 100 mm to 450 mm (4 to 18 inches) full scale (nominal) |
| Linearity Error: | ±0.15% of Full Scale Output (FSO) typical, ±0.25% max. |
| Resolution: | 0.025% of FSO |
| Update Rate: | 300 Hz nominal |
| Operating Temperature: | -20 to 85 C (-40 to 105 C extended temperature range) |
| Temperature Coefficient: | ≤±0.015% of FS/deg C |
| 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 |
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| Electrical Termination |
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| Output Type | OD (mm) | Linear | Axial or Radial |
| Analog Output | Housing Material |
LV | X- | XX- | XXX- | X- | XX- | XX | X- |
| E- Voltage | 45 - 45 mm | 100 | A- Axial | 00- 1 m cable | 05- 0.5 to 4.5 V DC | A- Aluminum |
| I- Current |
| 150 | R- Radial | 01- 5-pin M12 | 06- 4.5 to 0.5 V DC | S- Stainless Steel |
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| 200 |
| 03- 3 m cable | 10- 0 to 10 V DC |
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| 250 |
| A: 05 - 5-pin minifast | 11- 10 to 0 V DC |
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| 300 |
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| 20- 4 to 20 mA DC |
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| 375 |
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| 21- 20 to 4 mA DC |
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| 450 |
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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 | ||
Function | Pin | Cable Color |
+24 V DC input | 1 | Red |
Ground | 2 | Black |
LVE voltage output | 3 | Green |
LVI current output | 4 | Green |
SenSet™ | 5 | White |
Linear Range | Length “A” | |
4 inches | 100 mm | 9.88 inches [250.9 mm] |
6 inches | 150 mm | 11.88 inches [301.7 mm] |
8 inches | 200 mm | 13.88 inches [352.5 mm] |
10 inches | 250 mm | 15.88 inches [403.3 mm] |
12 inches | 300 mm | 17.88 inches [454.1 mm] |
15 inches | 375 mm | 20.88 inches [530.4 mm] |
18 inches | 450 mm | 23.88 inches [606.6 mm] |
If you are looking for CAD drawings of our LV-45 sensor, simply call us at 856-727-0250 or use the online contact us form by clicking here.
Download LVIT Linear Position Sensor LV-45 DatasheetThe LV-45 is Alliance Sensors Group's largest-diameter LVIT, housed in a 45 mm OD stainless steel or aluminum body designed for extreme-duty hydraulic cylinder position sensing applications where mechanical robustness, IP-68 sealing, and long service life in the most demanding industrial environments are the primary requirements. The 45 mm housing accommodates the signal conditioning electronics, sealing components, and larger-diameter guide bearing needed to handle the side loads and shock inputs present in heavy mobile hydraulics, mining equipment, and offshore hydraulic systems.
Side Load and Shock Resistance
In mobile hydraulics and construction machinery, the cylinder and its position sensor experience side loads from off-axis forces on the cylinder rod, shock loads from hydraulic pressure spikes and mechanical impacts, and vibration from rough terrain operation. The LV-45's heavy-wall housing, oversized guide bearing, and stainless steel spoiler is sized to handle these loads without deflection that would introduce measurement error or mechanical stress that would shorten sensor life.
Reliable Contactless Linear Position Sensing: LVIT Advantages for Demanding Industrial Applications
Engineers seeking reliable linear position sensing in demanding industrial environments should consider LVIT (Linear Variable Inductance Transducer) sensors from Alliance Sensors Group. These contactless inductive devices provide solid performance where traditional options fall short.
- Contactless, frictionless design — No moving parts or wear, delivering long-term repeatability and eliminating degradation seen in potentiometers.
- Superior stroke-to-length ratio — Overall length only slightly exceeds stroke, enabling compact integration in space-constrained applications.
- High environmental robustness — IP-67/68 sealing, shock/vibration tolerance, and -40°C to 105°C operation suit harsh conditions like hydraulics, automation, and outdoor equipment.
- Accuracy and resolution — Linearity ≤0.1% FSO, resolution to 0.025% FSO, with stable performance across temperature ranges.
- Field-programmable scaling — SenSet™ feature allows quick on-site adjustment to match mechanical setup, reducing calibration time.
- Low power and fast response — <1W consumption, 250–500 Hz update rates for real-time feedback.
- Cost-effective alternative — Matches or exceeds contactless performance of LVDTs and magnetostrictive sensors at prices closer to industrial-grade potentiometers, with simpler installation (no ring magnets or complex machining required).
LVITs excel in factory automation, mobile hydraulics, cylinder feedback, and subsea applications by balancing reliability, ease of use, and total ownership cost. Explore options at alliancesensors.com for your next design.
