Accelerometer 3255
The Model 3255 is a two-chip accelerometer designed for surface mount applications. The package can be mounted in one of two orientations, allowing the measurement axis to be either parallel or perpendicular to the mounting surface without the use of costly brackets. This accelerometer consists of a micro machined silicon mass suspended by multiple beams from a silicon frame. Piezoresistors located in the beams change their resistance as the motion of the suspended mass changes the strain in the beams. |
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Silicon caps on the top and bottom of the device are added to provide over-range stops. This design provides for a very low profile, high shock resistance, durability and built-in damping over a wide usable bandwidth.
A patented self-test feature is also built into the sensor. By applying a voltage to the self-test pin, an electrostatic force is created that attracts the seismic mass towards the top cap, simulating an acceleration and allowing proper sensor function to be verified.
Available models
- Available measurement range: +/- 25, 50, 100, 250 and 500g
- Sensibility (minimum): 72 to 3.6mV/g (model dependent)
- Power supply: 5VDC
- Operation temperature: -40ºC to +125ºC
- Package:ceramic substrate for surface mount (SMD)
Features
- Surface Mount Package
- Three Axis Mounting Options
- Self Test Function
- DC Response
- Gas Damping
- Built-in Overrange Stops
Applications
- Impact Testing
- Vibration/Shock Monitoring
- Crash Applications
- Aerospace Testing