IP68 Submersible Displacement Transducer | LS14

At a Glance

Description

The LS14 Submersible Stand-Alone Linear Position Sensor has been specifically designed for marine applications that require a waterproof and corrosion resistant position sensor. Exquisitely engineered, the sensor is rated to operate down to a 100m (10bar) depth. When combined with the non-wearing inductive technology, the LS14 will deliver reliable performance for many years.

The non-wearing inductive technology used in the LS14 is a major advance in displacement sensor design. This transducer has the simplicity of a potentiometer with the life of an LVDT. The LS14 sensor outputs a stable DC analogue signal by using simple inductive coils in conjunction with advanced ASIC control technology. As there is no contact between moving electrical components, reliability is high and wear is eliminated for an exceptionally long life. It also overcomes the drawbacks of LVDT technology that typically include; bulky coils, poor length-to-stroke ratios, separate signal conditioning requirements and the need for special magnetic materials.

The LS14 provides 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 can be specified during the order process. The default accuracy of the LS14 is 0.5% FSO, for stroke ranges above 450mm, however if you would like a greater accuracy, for stroke ranges less than 600mm, then this can be specified during the ordering process too.

The sensor is very robust, the body and push rod being made of stainless steel for long service life and environmental resistance. It is particularly suitable for OEMs seeking good sensor performance for arduous applications such as industrial machinery where cost and reliability is important.

Overall performance, repeatability and stability are outstanding over a wide temperature range. The sensor is easy to install with mounting options including M5 rod eye bearings and body clamps. The push rod by default is supplied, free or captive, with female M5x0.8×9 deep thread. Alternatively, M5 rod eye, dome end or magnetic tip options are available too. Captive push rods can be sprung loaded, in either direction, on sensors up to 300mm of travel. The LS14 also offers a wide range of mechanical and electrical options and is IP68 10bar/IP69K rated. The ability for the LS14 to remain unaffected by external Electrical Magnetic interference is assured by the built in EMC protection that conforms to EN 61000-6-2 and EN 61000-6-3 standards.

Common applications for the Applied Measurements LS14 position sensor include geotechnical testing, marine research, offshore structure monitoring and oil & gas activities.

Applied Measurements can supply a wide variety of instrumentation to complement your LS14 displacement sensor, such as wireless transmitters and receivers, digital displays and amplifiers.

Technical Specifications

Product Dimensions

Electrical Output Options

Output Option Code	Output Type	Supply Voltages	Load Resistance
A	0.5 - 4.5Vdc (ratiometric with supply)	+5Vdc (4.5 - 5.5V)	≥5kΩ
B	±5Vdc	±15Vdc nom. (±9 - 28V)	≥5kΩ
C	0.5-9.5Vdc	+24Vdc nom. (13 - 28V)	≥5kΩ
D	±10Vdc	±15Vdc nom. (±13.5 - 28V)	≥5kΩ
E	4-20mA (2-wire current loop)	+24Vdc nom. (18 - 28V)	≈ 0 - 300Ω max. @24V ~ 1.2 to 6V across 300Ω {RL max. = (Vs - 18) / 20e-3}
F	4-20mA (3-wire sink)	+24Vdc nom. (13 - 28V)	≈ 0 - 950Ω max. @24V ~ 3.8 to 19V across 950Ω {RL max. = (Vs - 5) / 20e-3}
G	0.5-4.5Vdc	+24Vdc nom. (9 - 28V)	≥5kΩ
H	4-20mA (3-wire source)	+24Vdc nom. (13 - 28V)	≈ 0 - 300Ω max. ~ 1.2 to 6V across 300Ω

Wiring Details

Mechanical Mounting

Depending on options; Body can be mounted by rod eye or by clamping the sensor body –
body clamps are available, if not already ordered. Target by M5x0.8 female thread, rod eye or magnetic tip. It is assumed that the sensor and target mounting points share a common earth. Where the free end of the cable is to be terminated in a submerged position, adequate sealing must be provided to protect connections.

Output Characteristic

Target is extended 9 mm from end of body at start of normal travel. The output increases as the target extends from the sensor body, the calibrated stroke is between 5mm and 800mm.

WARNINGS
A	Not protected – the sensor is NOT protected against either reverse polarity or over-voltage. The risk of damage should be minimal where the supply current is limited to less than 50mA.
B & D	Supply leads diode protected. Output must not be taken outside ± 12V.
C & G	Supply leads diode protected. Output must not be taken outside 0 to 12V.
E, F & H	Protected against any misconnection within the rated voltage.

V01.06.2023

Ordering Codes & Options

Example code	LS14	A	-	800	-	L	A	-	0	0	U	N	-		Z	-	000
Product Family
LS14	LS14
Electrical Output
0.5-4.5Vdc (ratiometric with supply)		A
±5Vdc		B
0.5-9.5Vdc		C
±10Vdc		D
4-20mA (2-wire current loop)		E
4-20mA (3-wire sink)		F
0.5-4.5Vdc		G
4-20mA (3-wire source)		H
			-
Displacement
From 5mm to 800mm, in 1mm steps				XXX
					-
Electrical Connection
Radial Cable Gland (IP68 to 10bar/100m)						L
Axial Cable Gland (IP68 to 10bar/100m)						M
Cable Length
No cable							0
1m							A
2m							B
3m							C
5m							D
10m							E
15m							F
20m							G
								-
Body Fittings
None (standard)									0
M5 Rod-End Bearing (with radial electrical connection only)									N
Push Rod
Not Sprung (standard)										0
Spring Extend (300mm max displacement and captive push rod only)										E
Spring Retract (300mm max displacement and captive push rod only)										R
Push Rod Fittings
M5 Female Thread (standard M5x0.8x9 deep)											0
Dome End (available with spring extend option 'E' only)											T
M5 Rod-End Bearing											U
Magnetic Tip											W
Push Rod
Captive/Retained (standard)												N
Non-Captive (can depart body - not available on sprung options)												V
													-
Output Polarity Calibration
Standard														0
Reversed														R
Accuracy @ 20ºC
Standard Non-Linearity															0
Improved Non-Linearity: ≤±0.1%/FSO (0-10mm to 0-450mm ranges only) ≤±0.25%/FSO (0-451mm to 0-600mm ranges only)															Z
																-
Special Code
No Special Requirements																	000
Technical Sales will provide specials codes as required																	XXX

ACCESSORIES

The black polyamide 35mm body clamp fits the LS14 perfectly and is an essential accessory if you need to mechanically grip the body of the displacement sensor and secure both to an external structure e.g. test rig. The BP014 is designed to be secured by 2 x M6 Fixings (not supplied).