SGA01 Strain Gauge Amplifier
30/04/2008
Page 3 of 6
Introduction
Racelogic’s SGA01 is a twin-channel, user-adjustable strain gauge amplifier. Each channel is designed for full-bridge operation, but can be used with half-
bridge and quarter-bridge load cells if necessary, as discussed in the “Connection” section of this manual.
Each channel is DC isolated, with an output range of
±
9V and a signal gain adjustable between approximately 25 and 1000.
Connection to the SGA01 is made via screw terminals, with mini cable glands to allow wires to be run out of the unit when the lid is in place, preventing
interference with the screw terminals and the scale and setting adjusters.
Connection
Wires can be run into the Strain Gauge Amplifier using the three mini cables glands. This allows the lid to be replaced, enabling secure connections to the
internal screw terminals without leaving them or the scale and offset adjustment screws exposed.
This section details connection methods for use with full bridge, half bridge and quarter bridge circuits.
Full Bridge Circuit
When using the SGA in conjunction with a full bridge load cell, no additional equipment is required. Simply connect the load cell to the SGA as shown in the
diagram above.
