Omni Instruments
contact icon+44 (0) 1382 443000
+44 (0) 845 9000 601

Contact our technical sales team now to discuss your requirements

help icon
MY BASKET basket arrow


My Cart

You have no items in your shopping cart.

Click basket to edit.


Latest added news blog
MSR175 Shock Transportation Data Logger
Kenny Laidlaw
Oct 01,2018
The MSR175 shock transportation data logger is the newest miniature logger from MSR.  The MSR175 more >
S120 Submersible Linear Displacement Sensor
  • S120 Submersible Linear Displacement Sensor

LIPS S120 Submersible Cylinder Linear Position Sensor

Quick Overview

The S120 LIPS® (Linear Inductive Position Sensor) is an affordable, durable, high-accuracy position sensor designed for arduous underwater hydraulic or pneumatic cylinder position feedback applications. The S120 will provide a linear output proportional to travel. Each unit is supplied with the output calibrated to the travel required by the customer, any stroke from 0-5mm to 0-800mm and with full EMC protection built in. The sensor is very rugged, being made of stainless steel with an inert fluoropolymer sheathed probe with a stainless steel target tube.The sensor is easy to install in cylinders and has a wide range of mechanical and electrical options. Environmental sealing is to IP68 350 Bar. The maximum system pressure is limited to 350 Bar (Water pressure plus hydraulic pressure).


The S120 is a submersible version of the P100 cylinder sensor with a larger electronics housing and wet mate high pressure connector. The S120 is sealed for a maximum of 350bar combined hydraulic and water pressure. The unit is compact, space-efficient and responsive along almost its entire length. The sensor will provide a linear output proportional to displacement. Each sensor is supplied with the output calibrated to the travel required by the customer, our standard range covers any measurement range from 0-5mm to 0-800mm. As with all of our packaged sensors full EMC protection is built in.

The sensor is very robust, the body and target tube are made of 316 stainless steel for long service life and environmental resistance. The sensor is easy to install with M18 or 3/4" UNF mounting thread options. The target tube can be supplied plain or with a variety of flanges. The S120 also offers a wide range of electrical options via a MCBH-4M wet mateable 4-pin connection with 0.5m tails. Different mating connectors and longer cable lengths are available on request.


  • Non-contacting inductive technology to eliminate wear
  • Travel set to customer's requirement
  • Compact and self-contained
  • High durability and reliability
  • High accuracy and stability
  • Sealing to IP68, 350 Bar.


Independent Linearity:

≤ ± 0.25% FSO @ 20°C - up to 450 mm
≤ ± 0.5% FSO @ 20°C - over 450 mm
≤ ± 0.1% FSO @ 20°C* available upon request.
*Sensors with calibrated travel from 10 mm up to 400 mm.
Temperature Coefficients:

< ± 0.01%/°C Gain &
< ± 0.01%FS/°C Offset
Frequency Response:

> 10 kHz (-3dB)
> 300 Hz (-3dB) 2 wire 4 to 20 mA
Resolution: Infinite
Noise: < 0.02% FSO


Body Diameter: 40mm
Body Length (to seal face): 80.3 mm (axial), 88.8mm (radial)
Probe Length (from seal face): Calibrated travel + 58mm
Target Tube Length: Calibrated travel + 30 mm

For full mechanical details see drawing S120-11

Environmental Temperature Limits

Operating: -4°C to +50°C
Storage: -4°C to +50°C
Sealing: IP68 350 Bar
Hydraulic Pressure: 350Bar Absolute
EMC Performance:

EN 61000-6-2
EN 61000-6-3
Vibration: IEC 68-2-6: 10 g
Shock: IEC 68-2-29: 40 g
MTBF: 350,000 hrs 40°C Gf

Availability: Stock Item