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Overview

FSS Series force sensor, uncompensated/unamplified, low profile SMT package, 0 N to 5 N force range, short tube packaging.

The FSS Series Force Sensor provides precise, reliable force sensing performance in a compact, commercial-grade package at a cost effective price. The sensor features a proven sensing technology that uses a specialized piezoresistive, micromachined silicon sensing element. The low power, unamplified, uncompensated Wheatstone bridge circuit design provides inherently stable mV outputs over the force range.

Force sensors operate on the principle that the resistance of silicon-implanted piezoresistors will increase when the resistors flex under any applied force. The sensor concentrates force from the application, 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 overforce capacities of up to three times the rated force. The stainless steel ball provides excellent mechanical stability and is adaptable to a variety of applications.

The FSS Series Sensor delivered 20 million operations in Mean Cycles to Failure (MCTF) reliability testing at 50°C [122°F]. This test determines the number of possible sensor operations at full scale until failure.

FSS005WNSB Force Sensors - Honeywell


Technical Specifications

Signal Conditioning Unamplified
Output Analog
Operating Force or Pressure 0 N to 5 N
Overforce or Overpressure 15 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 6.6 mV/V/N min., 7.2 mV/V/N min., 7.8 mV/V/N min.
Packaging Short tube
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

Technical Specifications

Signal Conditioning Unamplified
Output Analog
Operating Force or Pressure 0 N to 5 N
Overforce or Overpressure 15 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 6.6 mV/V/N min., 7.2 mV/V/N min., 7.8 mV/V/N min.
Packaging Short tube
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

Documents

TITLE DOCUMENT TYPE LANGUAGE SIZE
Hospital Applications Brochure English 5MB
FSS Series highres photo.jpg Photo -- 440KB
FSS Series lowres photo.jpg Photo -- 78KB
Force Sensors Product Line Guide English 254KB
FSS Series Low Profile Force Sensors Datasheet English 346KB
FSS Series Low Profile Force Sensors Installation Instructions English 367KB
Sensors and Switches for Potential Medical Applications Product Range Guide English 3MB
Sensors and Switches for Potential Medical Applications Application Note English 374KB
Sensors in Infusion Pumps Application Note English 2MB

Product Features

  • RoHS-compliant materials meet Directive 2002/95/EC allows use in industries requiring regulation compliance
  • 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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