FN4055
Loaw Ranges Seatbelt Load Cell
SPECIFICATIONS•

Ranges from 100 to 300 N (20 to 60 lbf)

•Compatible with most seat belts•

Machined with integrated mechanical stops•

Accuracy ±0.25%FS

TE CONNECTIVITY has applied our decade of experience
serving the automotive crash test industry to design theultimate crash test seat belt restraint sensor.

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Protected against overloadTension only
Usable without cutting the belt
For Static and Dynamic Applications

Automotive crash test
Kid seats tests
Security belts controls
Laboratory and ResearchFEATUR
ES

APP
LIC
ATIONSThe FN4055 measures with excellent accuracy
the forces exerted on the seat belt. Only the actual
compression upon the seat belt is measured, as thesensor is insensitive to contact from the crash test dummy.
The unit is designed for very low range, like tests for kid’s
security. It is protected against overload by mechanicalstops.
A similar sensor, EL20-S458, covers requests withhigher ranges up to 25kN.
With many years of experience as a designer andmanufacturer of sensors, TE CONNECTIVITY often workswith customers to design or customize sensors for specificuses and testing environments.
On request, Instruction documents can beprovided to ease the selection and use of our sensors andprovide helpful tips.

SENSOR SOLUTIONS /// FN4055_en

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Seat belt load cell

STANDARD RANGES
Ranges in N (FS)

100250300

Ranges in lbf (FS)205060Over range in N w/o damage

500

1250

1500

Over range in lbf w/o damage

10250300

PERFORMANCE SPECIFICATIONS (typical values at temperature 23±3°C)
Parameters
Operating Temperature Range (OTR)-20 to 80° C [-4 to 176° F]

Compensated Temperature Range (CTR)

0 to 60º C [32 to 140° F]

Zero Shift in CTR<0.5% F.S. / 50° C [/100° F]

Sensitivity Shift in CTR<1.5% of reading / 50° C [/100° F]

Over-Range
Without Damage

See table

Accuracy
Combined Non-Linearity & Hysteresis±0.25% F.S.

Electrical Characteristics
Model

FN4055

Supply Outage

10Vdc

Sensitivity “FSO”

2 mV/V

Zero Offset<±1mV

Input Impedance/Consumption

350 Ω

Output Impedance

350 Ω

Insulation under 50Vdc≥100MΩ

Notes
1. Shielded cable with 4 wires, standard length 2 m [6.5 ft]
2. Material: Body aluminium alloy
3. Protection Index: IP50

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FN4055
Seat belt load cell

DIMENSIONS

Wiring Schematic

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FN4055
Seat belt load cell

OPTIONS AND ACCESSORIES
L00F: Special Cable Length, replace “00” with total length in feet (Specified only on units with lbf range.)
L00M: Special Cable Length, replace “00” with total length in meter (Specified only on units with N range.)

ORDERING INFORMATION

FN4055

-100N

-/L5M
Options (L00M, ..)Range in Newton
Model

NORTH AMERICAEUROPE

ASIA

Measurement Specialties, Inc.,a TE Connectivity Company
Vibration Design Center
32 Journey - Suite 150
Aliso Viejo, CA 92656
United States USA
Tel: 1-949-716-0877
Fax: 1-949-916-5677
CustomerCare.lcsb@te.com

Measurement Specialties (Europe), Ltd.
a TE Connectivity Company
26 Rue des Dames
78340 Les Clayes-Sous-Bois, France
Tel: +33 (0) 130 79 33 00
Fax: +33 (0) 134 81 03 59
CustomerCare.lcsb@te.com

Measurement Specialties (China), Ltd.,a TE Connectivity Company
No. 26 Langshan Road
Shenzhen High-Tech Park (North)Nanshan District, Shenzhen 518057 China
Tel: +86 755 3330 5088
Fax: +86 755 3330 5099
CustomerCare.shzn@te.com

TE.com/sensorsolutions
Measurement Specialties, Inc., a TE Connectivity company.
Measurement Specialties, TE Connectivity, TE Connectivity (logo) and EVERY CONNECTION COUNTS are trademarks. All other logos, products and/or company names referred toherein might be trademarks of their respective owners.
The information given herein, including drawings, illustrations and schematics which are intended for illustration purposes only, is believed to be reliable. However, TE Connectivity makes
no warranties as to its accuracy or completeness and disclaims any liability in connection with its use. TE Connectivity‘s obligations shall only be as set forth in TE Connectivity‘s Standard
Terms and Conditions of Sale for this product and in no case will TE Connectivity be liable for any incidental, indirect or consequential damages arising out of the sale, resale, use or
misuse of the product. Users of TE Connectivity products should make their own evaluation to determine the suitability of each such product for the specific application.
© 2015

TE Connectivity Ltd. family of companies

SENSOR SOLUTIONS /// FN4055_en

All Rights Reserved.

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