Datasheet

Force Sensors
FSS Low Profile Force Sensors
FS Series
FEATURES
• True Surface Mount
Technology
• Maximum peak reflow
temperature of 260 °C
[500 °F]
• Compact, commercial
grade package
• Robust performance
characteristics
• Adaptable package design
• Precision force sensing
• Reliability rated at 20
million MCTF at 25 °C
[77 °F]
• Electrically ratiometric
output
• Extremely low deflection
(30 microns typ. @ Full
Scale)
• High ESD resistance 8 kV
• Available signal
conditioning
• Optional terminal
configurations
TYPICAL APPLICATIONS
• Medical infusion pumps
• Ambulatory noninvasive
pump pressure
• Occlusion detection
• Kidney dialysis machines
• Load and compression
sensing
• Variable tensions control
• Robotic end-effectors
• Wire bonding equipment
WARNING
PERSONAL INJURY
DO NOT USE these
products as safety or
emergency stop devices or
in any other application
where failure of the product
could result in personal
injury.
Failure to comply with
these instructions could
result in death or serious
injury.
The FS Series sensors provide 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 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 result in load excitation capacities of 4.5/5.5 kg over-force. The
stainless steel ball provides excellent mechanical stability and is adaptable
to a variety of applications. The FSS 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. Various electric interconnects can accept prewired connectors,
printed circuit board mounting, and surface mountings. The unique sensor
design also provides a variety of mounting options that include mounting
brackets, as well as application specific mounting requirements.
WARNING
MISUSE OF DOCUMENTATION
• The information presented in this product sheet is for reference only. Do
not use this document as a product installation guide.
• Complete installation, operation, and maintenance information is provided
in the instructions supplied with each product.
Failure to comply with these instructions could result in death or
serious injury.
Sensing and Control