3028 Series Accelerometer

3028 Series Accelerometer

Description: The Model 3028 is a piezoresistive silicon accelerometer packaged on a ceramic substrate with a metal bracket which can be used to bolt the sensor to the mounting location. The 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. 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. For an accelerometer with an adhesive mount design, see the Model 3022. Please refer to the Models 3052 and 3058 for accelerometers with integral temperature compensation.

Features:
• Piezoresistive MEMS
• DC Response • Millivolt Output
• Low Cost
• Bolt Mount
• ±0.5% Non-linearity (typical)
• DC Response
• Gas Damping
• Built-in Over-range Stops
• Low Power

Parameters
DYNAMIC                                                                              Notes
Range (g): ±2 ±5 ±10 ±20 ±50 ±100 ±200
Sensitivity (mV/g):1 8.0-20.0 6.0-15.0 3.0-6.0 1.5-3.0 0.6-1.5 0.3-0.6 0.15-0.3 @5Vdc
Excitation Frequency Response (Hz): 0-150 0-250 0-400 0-600 0-1000 0-1500 0-2000 ±5%
Natural Frequency (Hz): 700 800 1000 1500 4000 6000 8000
Non-Linearity (%FSO): ±0.5 ±0.5 ±0.5 ±0.5 ±0.5 ±0.5 ±0.5
Transverse Sensitivity (%): 3 3 3 3 3 3 3
Damping Ratio: 0.7 0.7 0.7 0.7 0.7 0.7 0.6
Shock Limit (g): 5000 5000 5000 5000 5000 5000 5000

ELECTRICAL
Zero Acceleration Output (mV): ±25 ±25 ±25 ±25 ±25 ±25 ±25
Differential Excitation Voltage (Vdc): 2 to 10 2 to 10 2 to 10 2 to 10 2 to 10 2 to 10 2 to 10
Input Resistance (Ω): 2500- 6500 2500- 6500 2500- 6500 2500- 6500 2500- 6500 2500- 6500 2500- 6500
Output Resistance (Ω): 2500- 6500 2500- 6500 2500- 6500 2500- 6500 2500- 6500 2500- 6500 2500- 6500
Insulation Resistance (MΩ): >100 >100 >100 >100 >100 >100 >100 @50Vdc
Residual Noise (µV RMS): 10 10 10 10 10 10 10 Maximum
Ground Isolation: Isolated from Mounting Surface

ENVIRONMENTAL
Thermal Zero Shift (%FSO/°C): -0.09 -0.09 -0.09 -0.09 -0.09 -0.09 -0.09
Typical Thermal Sensitivity Shift (%/°C): -0.15 -0.15 -0.15 -0.15 -0.15 -0.15 -0.15
Typical Operating Temperature (°C): -40 to +125
Compensated Temperature (°C): Not Compensated See Note 2
Storage Temperature (°C): -40 to +125

PHYSICAL
Case Material: Aluminum Flange, Ceramic
Cover Weight (grams): 4.5
Mounting: 2x #4-40 Mounting Screws
Mounting Torque: 6 lb-in (0.7 N-m)

1 Output is ratiometric to excitation voltage
2 Order model 3028-XXX-10256 for temperature compensation resistor values included in the calibration certificate.