Force Sensor (FSG Series)

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The FSG Series Force Sensor provides precise, reliable force sensing performance in a compact commercial-grade package. The sensor features a proven sensing technology that utilizes a specialized piezoresistive micro-machined silicon sensing element. The low power, unamplified, non-compensated Wheatstone bridge circuit design provides inherently stable mV outputs over the 5 N, 10 N, 15 N and 20 N force ranges.

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 plunger, 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 plunger provides excellent mechanical stability and is adaptable to a variety of applications. Various electric interconnects can accept prewired connectors, printed circuit board mounting, and surface mounting. The unique sensor design also provides a variety of mounting options that include mounting brackets.


• Extremely low deflection (approx. 30 μm typical at Full Scale) helps reduce measurement error
• Low repeatability error (0.2% span) improves overall system accuracy
• Low linearity error (0.5% span) improves system accuracy over the entire force range
• Low off-center loading errors improves system accuracy due to mechanical misalignment
• Resolution to 0.0098 N improves customer’s system accuracy
• Fast response time allows system to make faster decisions which may improve system accuracy
• Low power consumption allows use in battery applications
• High ESD resistance of 8 kV) reduces special handling during assembly


     ◦  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


Datasheet (PDF)