Ref: AMP-SGx-U2

Modular Spinning 1 to 3 channel Strain Gage Amplifier

  • Highly accurate bridge excitation
  • 1 to 3 channels for full-bridge strain gage
  • Provides high level voltage signal output
  • Externally adjustable shunt resistance
  • Externally adjustable gain
  • Precision low noise differential amplifier
  • Remote bridge excitation On/Off capability
  • Remote shunt calibration capability
  • Pilots on SR series slip ring rotors
  • Amplifiers are stackable for multi-channel use

Download the product sheet



The Modular Spinning Strain Gage Amplifier is designed to mount on the rotor (spinning side) of all Michigan Scientific SR series slip rings. Superior data accuracy is achieved by locating the signal amplifier on the rotating side of the slip ring. This configuration greatly improves signal quality because the amplifier is located closer to the sensor which reduces errors due to long lead wires, connector resistance variations, and electro-magnetic interference.

These Modular Spinning Strain Gage Amplifiers incorporate a precision low drift bridge excitation supply, a stable differential amplifier, and a remotely activated shunt calibration resistor for system span verification.

Each amplifier module provides strain gage bridge excitation and amplification for two channels. For more than two channels, the amplifiers may be stacked or arrayed around an adapter plate. There is also a two and a three channel amplifier, resp. AMP-SG2-U2 and AMP-SG3-U2.


Parameter Specification
Bridge excitation voltage ±2.5V, ±5V, ±8.5V or ±17V
Accuracy 0,20%
Temperature coefficient 0,0005%/°C
Gain 100 & 2000 V/V
Output ±10V
Frequency response 1 to 10 kHz
Operating temperature -55 to +125°C
Weight 64 to 82 g

Available models

Models Channels Excitation Voltage
AMP-SG-U2 1 5V
AMP-SG-U2-10 1 10V
AMP-SG-U2-17 1 17V
AMP-SG-U2-20 1 20V
AMP-SG-U2-BC 1 5V + Complétude du pont
AMP-SG2-U2-2.5 2 +/- 2,5V
AMP-SG2-U2-5 2 +/- 5V
AMP-SG2-U2-10 2 +/- 10V
AMP-SG3-U2-2.5 3 +/- 2,5V
AMP-SG3-U2-5 3 +/- 5V
AMP-SG3-U2-10 3 +/- 10V
Electronic type
Amplifier for Slip Ring
Input channels
1 , 2 , 3
Input signal type
SG bridge
Analog output signal
± 10 VDC
Tension d'alimentation
10 Vcc
Terminal 4 pin
Protection Class


37.5 x 8 x 15.2 mm

  • Bandwidth increase
  • Housing for Slip ring
  • Power supply unit
  • Display

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