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Overview

FSS-SMT Series force sensor, uncompensated/unamplified, low profile package, 0 N to 15 N force range, tape and reel packaging.

Honeywell FSS-SMT Series force sensors are designed to be one of the most reliable force sensors available as illustrated by 20 million Mean Cycles to Failure (MCTF) at 25°C [77°F] rating. This low profile Surface Mount Technology (SMT) sensor allows for automated assembly on a printed circuit board, often helping the customer to reduce assembly costs.

The FSS-SMT Series force sensor is designed to provide precise and reliable force sensing performance in a compact commercial-grade package. The sensor incorporates Honeywell sensing technology that uses a specialized piezoresistive micromachined silicon sensing element. The low power, unamplified, uncompensated Wheatstone bridge circuit design provides inherently stable mV output over the force range.

Force sensors operate on the principle that the resistance of silicon-implanted piezoresistors will change when the resistors flex under applied force. The sensor concentrates force from the applications, through the stainless steel ball, directly to the silicon-sensing element. The amount of resistance changes in proportion to the amount of force being applied. This change in circuit resistance results in a corresponding mV output level change.

The sensor package design incorporates patented modular construction. The use of innovative elastomeric technology and engineered molded plastics results in load excitation capacities up to 60 N (range dependent). The stainless steel ball provides excellent mechanical stability, and is suitable for a variety of potential medical and commercial applications.

FSS015WNGR Force Sensors - Honeywell


Technical Specifications

Signal Conditioning Unamplified
Output Analog
Operating Force or Pressure 0 N to 15 N
Overforce or Overpressure 45 N
Supply Voltage 3.3 V min., 10 V typ., 12.5 V max.
Operating Temperature -40°C to 85°C [-40°F to 185°F]
Storage Temperature -40°C to 100°C [-40°F to 212°F]
Linearity ±0.5% span, BFSL
Sensitivity 2.2 mV/V/N min., 2.4 mV/V/N min., 2.6 mV/V/N min.
Packaging Tape and reel
Sensitivity Shift over Temperature ±0.5 mV typ.
Null Offset ±30 mV
Null Shift over Temperature ±0.5 mV typ.
Input Resistance 4.0 kOhm min., 5.0 kOhm typ., 6.0 kOhm max.
Output Resistance 4.0 kOhm min., 5.0 kOhm typ., 6.0 kOhm max.
Diagnostics No
Vibration 0 kHz to 2 kHz, 20 G sine
Shock 150 g
Availability Global
Comment MCTF 20 Million at 50°C
Series Name FSS-SMT

Technical Specifications

Signal Conditioning Unamplified
Output Analog
Operating Force or Pressure 0 N to 15 N
Overforce or Overpressure 45 N
Supply Voltage 3.3 V min., 10 V typ., 12.5 V max.
Operating Temperature -40°C to 85°C [-40°F to 185°F]
Storage Temperature -40°C to 100°C [-40°F to 212°F]
Linearity ±0.5% span, BFSL
Sensitivity 2.2 mV/V/N min., 2.4 mV/V/N min., 2.6 mV/V/N min.
Packaging Tape and reel
Sensitivity Shift over Temperature ±0.5 mV typ.
Null Offset ±30 mV
Null Shift over Temperature ±0.5 mV typ.
Input Resistance 4.0 kOhm min., 5.0 kOhm typ., 6.0 kOhm max.
Output Resistance 4.0 kOhm min., 5.0 kOhm typ., 6.0 kOhm max.
Diagnostics No
Vibration 0 kHz to 2 kHz, 20 G sine
Shock 150 g
Availability Global
Comment MCTF 20 Million at 50°C
Series Name FSS-SMT

Documents

TITLE DOCUMENT TYPE LANGUAGE SIZE
FSS-SMT Series highres photo.jpg Photo -- 511KB
FSS-SMT Series lowres photo.jpg Photo -- 84KB
FSS-SMT Series Low Profile Force Sensors Datasheet English 322KB
FSS-SMT Series Low Profile Force Sensors Installation Instructions English 303KB
Sensors and Switches: Solutions for Medical Applications Flyer English 2MB
Airflow, Force, and Pressure Sensors Range Guide Product Range Guide English 2MB
Sensors and Switches for Medical Applications Brochure English 11MB

Product Features

  • Surface Mount Technology allows for automated assembly and may eliminate hand soldering
  • RoHS-compliant materials meet Directive 2002/95/EC
  • Low deflection (approx. 30 µm typical at full scale) helps reduce measurement error
  • Direct mechanical coupling of the actuation ball to the sense element reduces coupling errors and keeps mechanical hysteresis to a minimum
  • Product rating of 20 million MCTF at 25°C [77°F], subject to application variation, provides for consistent output over time and reduces repairs or replacements
  • Small size minimizes space on the printed circuit board (PCB)
  • Provides enhanced sensitivity without compromising signal integrity, resulting in low system noise and reducing measurement errors
  • Electrically ratiometric output accommodates supply voltage variations, leading to low ratiometricity error
  • Low voltage supply allows for use in many battery powered applications
  • High resistance to electrostatic discharge (ESD) meets ESD Sensitivity Classification Level 3B (8 KV), reducing special handling during assembly
  • Sensor output has low sensitivity to many mounting stresses

Applications

Medical:

  • Infusion pumps
  • Ambulatory non-invasive pumps
  • Occlusion detection
  • Kidney dialysis machines
  • Enteral pumps

Industrial:

  • Load and compression sensing
  • Variable tension control
  • Robotic end-effectors
  • Wire bonding equipment

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