Strain Gauge Amplifier The SGA-2 strain gauge amplifier is designed as a differential frontend amplifier for connecting full, half or ¼ bridge strain gauges with internal bridge termination. The SGA-2 is designed for connection to a high-precision Elsys transient recorder, but is also suitable for any other data acquisition system. The amplifier is available as a 2-channel boxed version or modular from 2 to 24 channels as a rack system. The amplifier can be configured either via the USB interface or on the hardware itself. Each channel can be configured individually. There are 3 amplifier stages with an amplification factor of 1, 10 and 100 to choose from. At gain 1 and 10, a bandwidth of 1.5 MHz is achieved, making the amplifier ideal for highly dynamic applications. For ¼-bridge applications, the measuring bridge must be supplemented with an internal resistor that matches the sensor. This means that the amplifier can be used with all common strain gages. Elsys AG Mellingerstrasse 12 CH-5443 Niederrohrdorf Switzerland

SGA-2 Strain Gauge Amplifier Key Capabilities • 4-wire and 6-wire configuration • Internal ½- and ¾ bridge completion • 2 independent channels per module • Gain x1, x10, x100 • 1.5 MHz bandwidth with gain x1 and x10 • Low offset voltage drift • Low output noise • Auto-Offset compensation • USB or RS485 interface for configuring all settings and read back of the actual output signal. Example: Three-Wire Internal Quarter Bridge 1 Manual Gain 10 Switch 100 Manual Config. Example: Standard Bridge 6-Wire Applications • Deformation testing for material characterization • High speed dynamic material...

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