Honeywell FSS-SMT Series Low Profile Force Sensors Product Documentation

FSS-SMT Series Low Profile Force Sensor DESCRIPTION Honeywell’s FSS-SMT Series force sensors are designed to be Force sensors operate on the principle that the resistance of one of the most reliable force sensors available as illustrated silicon-implanted piezoresistors will change when the resistors by 20 million Mean Cycles to Failure (MCTF) at 25 °C [77 °F] flex under applied force. The sensor concentrates force from rating. This low profile Surface Mount Technology (SMT) the applications, through the stainless steel ball, directly to the sensor allows for automated assembly on a printed circuit silicon-sensing element. The amount of resistance changes in board, often helping the customer to reduce assembly costs. proportion to the amount of force being applied. This change in

circuit resistance results in a corresponding m V output level

The FSS-SMT Series force sensor is designed to provide change. precise and reliable force sensing performance in a compact commercial-grade package. The sensor incorporates The sensor package design incorporates patented modular Honeywell sensing technology that uses a specialized construction. The use of innovative elastomeric technology and piezoresistive micromachined silicon sensing element. The low engineered molded plastics results in load excitation capacities power, unamplified, uncompensated Wheatstone bridge circuit up to 60 N (range dependent). The stainless steel ball provides design provides inherently stable m V output over the force excellent mechanical stability, and is suitable for a variety of range. potential medical and commercial applications.

FEATURES AND BENEFITS POTENTIAL APPLICATIONS  Surface Mount Technology allows for automated Medical assembly and may eliminate hand soldering

 Infusion pumps

 Ro HS-compliant materials meet Directive 2002/95/EC

 Ambulatory non-invasive pumps

 Low deflection (approx. 30 µm typical at full scale) helps

reduce measurement error  Occlusion detection

 Direct mechanical coupling of the actuation ball to the  Kidney dialysis machines sense element reduces coupling errors and keeps  Enteral pumps mechanical hysteresis to a minimum  Product rating of 20 million MCTF at 25 °C [77 °F], subject

Industrial

to application variation, provides for consistent output over

time and reduces repairs or replacements  Load and compression sensing

 Small size minimizes space on the printed circuit board  Variable tension control (PCB)  Robotic end-effectors  Provides enhanced sensitivity without compromising signal

 Wire bonding equipment

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