Miniature LVDT Displacement Transducer | Position Sensor

Compact, Configurable and Value for Money

AML/M Miniature LVDT Displacement Transducer

This product has been discontinued.

Please use our Industrial LVDT Displacement Transducer | Position Sensor | AML/IE instead.

Datasheet Frequently Asked Questions

At a Glance

Stroke Ranges: ±0.25mm to ±50mm
AC mV/V Output
Environmental Protection: IP40
Core-Only, Core + Extension &Spring-Loaded Versions
Optional In-Line DC/DC Signal Conditioner

Compact – Ideal for Material Testing Machines
Wide Range of Mechanical Configurations to Suit Your Specific Application
Fast and Simple Installation
Compact In-Line Signal Conditioner Available if a DC Output is Required without Compromising on Space.
Long Operating Life
Wide Range of Instrumentation Available

Description

The AML/M series of miniature LVDT displacement transducers are available in ranges from ±0.25mm (0-0.5mm) up to ±50mm (0-100mm).

Available in either a 4-wire or 6-wire configurations, the miniature LVDT requires a sinusoidal AC supply voltage and provides an AC mV/V output signal which is linearly proportional to displacement.

A compact in-line DC in/DC out signal conditioner is available to complement the miniature LVDT and provide a 0-5Vdc, 0-10Vdc or 4-20mA output signal if required.

The miniature LVDT is available in one of 3 mechanical configurations; plain core-only, plain core & extension rod and spring loaded core and extension rod.

Their small size and variety of mechanical configurations make the AML/M miniature LVDT suitable for a broad range of applications such as material testing machines, production and development test rigs, quality assurance testing, automotive and aerospace actuators and within pressure sensors.

As with all of our LVDT displacement transducer range customisation to suit your application is possible so please contact us if you would like to discuss the possibilities in your particular application.

Technical Specifications

CHARACTERISTICS	AML/M	AML/MJ	AML/MU	AML/MU10	AML/MI	UNITS
Stroke Measurement Range:	±0.5, ±1, ±2.5, ±5, ±10, ±12.5, ±15, ±25, ±50					millimetres
Signal Output:	See Table Below		0-5volt	0-10volt	4-20mA
No. of Wires	6	4	3	3	3
Supply Voltage (unregulated):	2 to 5Vrms @ 1 to 5kHz		10-24Vdc	14-24Vdc	14-24Vdc
Supply Current:	-		35mA @ 15V	35mA @ 15V	35mA typ.
Max. Loop Resistance:	-		-	-	300 @ 30V	ohms
Max. Output Sink Current:	-		0.5	1	-	milliamps
Non-Linearity:	<1.0					±% Stroke Range
Repeatability:	<0.10					±% Stroke Range
Output Bandwidth (flat):	100					Hz
Output Ripple:	-		30mV max.	30mV max.	0.1% @ 20mA
Operating Temperature Range:	AML/M & MJ: -30 to +85 Standard / -30 to +150 and -30 to +200 Optional 0 to +70 for in-line conditioner (where fitted). High temp versions NOT on sprung loaded.					°C
Zero Temperature Coefficient:	<0.020		<0.010			±%Stroke Range/°C
Span Temperature Coefficient:	<0.020		<0.030			±%Stroke Range/°C
Vibration Resistance:	20g up to 2kHz
Shock Resistance:	1000g for 10milliseconds
Construction Materials:	Body & Extension Rod: 303 St/Steel, Core: 416 St/Steel, Cable Gland: Nickel-Plated Brass, Spring: 316 St/Steel
Connecting Cable:	2 metre screened PTFE cable. Axial or radial exit available - see order codes for full details. **Spring-loaded version ONLY available with radial cable exit.
Environmental Sealing:	IP55
Note: On DC output version (0Vdc / 4mA) is given with the core in the extended / outwards position. This can be reversed if required, please request Option Y on your order.
**The spring-loaded version is only available with a radial cable exit due to the rear extension of the LVDT.
Note: On versions with in-line signal conditioner zero output (0Vdc / 4mA) is given with the core in the extended / outwards position. This can be reversed if required, please request Option Y on your order.

Product Dimensions

AC Output, Plain Core, and Core & Extension Dimensions Table

	All	Standard (Plain)		All
Stroke (mm)	Body Length (mm)	Core Length (mm)	Null Position (mm)	Sensitivity @ 3kHz with 50K Load (mV/V FRO)	Null	Primary Resistance (ohms)	Secondary Resistance (ohms)
±0.25	25	10	10	32.5	3	50	100
±0.5	25	10	10	74	4	125	200
±1	32	15	14	150	7	73	365
±2.5	40	17	18	165	7	120	470
±5	55	25	25	280	10	180	710
±10	69	25	33	290	8	152	390
±12.5	84	27	40	285	7	190	510
±15	99	42	48	330	8	98	190
±25	150	55	70	220	6	145	200
±50	220	94	108	390	8	60	98

AML-M Miniature LVDT Displacement Transducer AC Version Plain
AML-M-core extension

Plain Core AML-M Miniature AC Version Options: A = axial cable exit; R = radial cable exit; J = 4-wire device; H = high temperature 150°C; VH = very high temperature 200°C.

Core + Extension AML-M Miniature AC Version Options: A = axial cable exit; R = radial cable exit; J = 4-wire device; H = high temperature 150°C; VH = very high temperature 200°C.

AC Output and Sprung-Loaded Dimensions Table

Stroke (mm)	Body Length (mm)	Sensitivity @ 3kHz with 50K Load (mV/V FRO)	Null (mV)	Primary Resistance (ohms)	Secondary Resistance (ohms)	Spring Rate (N/mm)
±0.25	25	32.5	3	50	100	0.1090
±0.5	25	74	4	125	200	0.1090
±1	32	150	7	73	365	0.0908
±2.5	40	165	7	120	470	0.0778
±5	55	280	10	180	710	0.0605
±10	69	290	8	152	390	0.0363
±12.5	84	285	7	190	510	0.0303
±15	99	330	8	98	190	0.0259
±25	150	220	6	145	0200	0.0210
±50	220	390	8	60	98	0.0109

AML-M Miniature LVDT Displacement Transducer AC Version Sprung-Loaded (S) Outline

Sprung Loaded AML-M Miniature AC Version Options: R = radial cable exit; J = 4-wire device.

Note: No high-temperature options are available for spring loaded.

Wiring Details

AC Version 4-wire PTFE

Wire	Designation
Red	Primary +ve
Yellow	Primary -ve
Blue	Secondary +ve
Green	Secondary -ve
Ground	Screen (not connected to sensor body)

AC Version 6-Wire PTFE

Wire	Designation
Yellow	Primary +ve
Black	Primary -ve
Green	Secondary 1 +ve
Red	Secondary 1 -ve (centre tap)
Brown	Secondary 2 +ve
Blue	Secondary 2 -ve (centre tap)
Ground	Screen (not connected to sensor body)

DC Version 3-Wire (4-20mA, 0-5Vdc, 0-10Vdc)

Wire	Designation
Red	Supply
Blue	0V Common
Green	Signal
Ground	Screen (not connected to sensor body)

Ordering Codes & Options

AML/MJ+/-50mm-S0A-02-000 (example code)	AML/M	J	+/-50mm	-	S	O	A	-	2	-	000

Product Family
AML/M	AML/M

Electrical Output
Blank = 6-wire AC mV/V		Blank
J = 4-wire AC mV/V		J
U = 0-5Vdc *		U
U10 = 0-10Vdc *		U10
I = 4-20mA *		I
* Provided by external amplifier mounted in-line on cable.

Stroke Range
+/-0.25mm (0-0.5mm)			+/-0.25mm
+/-0.5mm (0-1mm)			+/-0.5mm
+/-1mm (0-2.5mm)			+/-1mm
+/-2.5mm (0-5mm)			+/-2.5mm
+/-5mm (0-10mm)			+/-5mm
+/-12.5mm (0-25mm)			+/-12.5mm
+/-25mm (0-50mm)			+/-25mm
+/-50mm (0-100mm)			+/-50mm

Mechanical Configuration
C = Core Only				-	C
X = Un-Guided Core & Extension Rod				-	X
S = Spring Loaded Core & Extension Rod with Ball-Tip (±50mm / 0-100mm max range)				-	S
H = 150ºC High Temperature Version (DC output only with in-line amplifier @ 70ºC max.) Core Only.				-	H
HX = 150ºC High Temperature, with PTFE cable (AC output only) Unguided Core + Extension Rod				-	HX
VH = 200ºC Very High Temperature Version (DC output only with in-line amplifier @ 70ºC max.) Core Only				-	VH
VHX = 200ºC Very High Temperature, with PTFE cable (AC output only) Unguided Core + Extension Rod				-	VHX

Output Direction (only affects DC output versions)
0 = Zero with core extended, Full Scale with core retracted						0
Y = Full Scale with core extended, Zero with core retracted						Y

Cable Exit Direction
A = Axial (not available on spring loaded version)							A
R = Radial							R

Cable Length (in metres)
02 = 2 metres (standard)								-	2
0,2 = 0.2 metres								-	0,2
10 = 10 metres								-	10

Specials Code
000 = No Special Requirements										-	000
Sales To Provide Specials Codes As Required

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Miniature LVDT Displacement Transducer | Position Sensor | AML/M

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At a Glance

Description