LINEAR AND ROTARY POSITION
Linear and
Rotary
Position
Transducers
Honeywell Sensing and Control manufactures a variety of potentiometric position sensors. The sensors use a tried and
true potentiometric technology originally developed for military applications and more recently applied to industrial
markets. MystR® conductive plastic potentiometric sensors are long-life units designed for rugged industrial
applications. The proprietary MystR® conductive plastic has an extensive temperature range, infinite resolution and
provides absolute position measurement on power-up. Intermediate signal conditioning is not required for normal
ratio-metric position sensing. Very small stroke units (5 mm [0.2 in]) and units required to withstand exposure to
harsh chemicals or work immersed in many different oils are available. If there is heavy hose down or spray from oil or
water, a water resistant or waterproof potentiometer such as the AQ series should be used.
Linear products have CE approval, Intrinsically Safe For Class I, II, III, Division 1, Groups A, B, C, D, E, F, G With Entity.
Vmax: 30 Vdc, Imax: 100 mA, Ci: 0.0 micro F, Li: 0.0 mH, T4A @ 105 °C Ambient.
Mechanical life:
Approvals:
Housing:
Element:
Shaft:
Wiper current:
Resolution:
LFII Series
Longfellow II linear position transducer
1 billion dither operations
CE, NEMA 4 - water resistant
Anodized aluminium
MystR® conductive plastic film
Stainless steel
< 1 uA
Infinite
1/4" - 28 NF-2A Thread
7/16" across flats, typ.
A
A
1.36
(34,5)
1.88
(47,8)
"Y"
"X"
0.75 ±0.01
(19,00 ±0,20)
'X' = Electrical travel + 3.19 in (81,0 mm)
'Y' = Electrical travel - 1.0 in (25,4 mm)
0.50
(12,70)
1.25
(31,80)
0.25
(6,40)
0.62
(15,90)
1.25
(31,80) 0.62
(15,90)
The new Longfellow II incorporates design innovations to increase transducer
life and provide greater resistance to vibration, while providing a smooth highquality signal for demanding factory control applications. It has a solid
stainless steel shaft, longer front-end bearings, a vibration-free damped
element, a spring-loaded ball joint and a high precision precious metal wiper.
Carrier guides are extruded the full length of the housing to ensure smooth
operation even under severe side load conditions.
0.125
(3,175)
-65 °C to 105 °C (-85 °F to 221 °F)
30 Vdc
± 0.1 %
0.84
(21,30)
1.00
(25,40)
2.00
(50,80)
0.156 x 0.312 Slot, typ.
(3,962 x 7,925)
Mounting Feet (2)
VIEW A-A
3
Mounting feet show above are for
standard LFII models only. Mounting
feet are not included with water
resistant LFII models. Water resistant
LFII models are shipped with brackets.
Shaft
extended
2
The newly designed internal components provide improvements based on
worldwide testing and field experience.
Operating temperature:
Supply voltage (max.):
Linearity:
Starting force (max.):
Standard
Water resistant
Backlash (max.):
Total Resistance:
Shaft Ø:
Termination:
Housing length:
Mechanical travel:
1.68
(42,70)
1
SCHEMATIC
OPTIONS
Standard
Mating connector, 3718401, sold separately
0,45 kg (1.0 lb)
2,27 kg (5.0 lb)
0,025 mm (0.001 in)
5000 Ohm
1/4 in
Connector, Binder Series 681
= Electrical travel + 3.19 in (81,02 mm)
= Electrical travel + 0.09 in (2,29 mm)
ELECTRICAL TRAVEL (IN (MM))
6.0 (152,4)
9.0 (228,6)
12.0 (304,8)
14.0 (355,6)
18.0 (457,2)
24.0 (609,6)
30.0 (762,0)
36.0 (914,4)
48.0 (1219,2)
REFERENCE
LF2S06N5KB6A
LF2S09N5KB6A
LF2S12N5KB6A
LF2S14N5KB6A
LF2S18N5KB6A
LF2S24N5KB6A
LF2S30N5KB6A
LF2S36N5KB6A
LF2S48N5KB6A
Water resistant
Mating connector, E02903021, sold separately
ELECTRICAL TRAVEL (IN (MM))
6.0 (152,4)
9.0 (228,6)
12.0 (304,8)
14.0 (355,6)
18.0 (457,2)
24.0 (609,6)
30.0 (762,0)
36.0 (914,4)
48.0 (1219,2)
www.honeywell.com/sensing
REFERENCE
LF2W06N5KB6A
LF2W09N5KB6A
LF2W12N5KB6A
LF2W14N5KB6A
LF2W18N5KB6A
LF2W24N5KB6A
LF2W30N5KB6A
LF2W36N5KB6A
LF2W48N5KB6A
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