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Geomatrix Ltd
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Ref Tek - Model 147-01 - Force Balance ...

Ref Tek - Model 147-01 -Force Balance High Resolution Accelerometers

The 147-01 is a force balance accelerometer which converts motion acceleration signals into voltage signals to measure various low frequency and ultra low frequency motion. The 147-01 accelerometer adopts the force balance feedback technique to make up for the mechanical characteristic limitations of conventional accelerometers. This overcomes the shortcomings of nonlinear distortion and threshold of sensitivity of elastic measuring parts. The advanced features of the 147-01 accelerometer include high sensitivity, large linear range, high resolution, and high dynamic range. This instrument is perfectly suited to free field referencing, structural monitoring, site response and aftershock studies.

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Features

State-of-the-Art Force-Balance Accelerometer
Low Noise
Sensitivity and offset stable over wide temperature range
Available in uniaxial, triaxial, and borehole models
DC response

Technical Specifications:

Full-scale Range: ±4g
Full-scale Output: ±10V
Type: Force-balance accelerometer
Self Noise: <1 |im/s/s
Linearity: <0.03% (tilt test)
Sensitivity: ±2.5 V/g
Frequency Response: DC 150Hz
Damping: 0.7
Output Impedance :<50O
Self-test Response: Logic level input will produce consistent g level output
Lightning Protection: Built-in surge protection
Size (Uniaxial): 4.0" wide x 2.5" long x 2.5"
high (10x6.3x6.3cm)
Size (Triaxial): 5.7" wide x 4.7" long x 2.9"
High (14.5xll.8x7.3cm)
Weight (Uniaxial): 2.2 lbs (1kg)
Weight (Triaxial): 4.4 lbs (2 kg)
Watertight Integrity: IP 67
Shock: Survives a 1 meter drop on any axis