Mantracourt Electronics Limited
SGA/A & SGA/D User Manual
2
Chapter 1 Introduction to SGA/A & SGA/D
The Strain Gauge Amplifier SGA
The SGA is a Strain Gauge Amplifier, converting a strain gauge input to a Voltage or current output – otherwise
known as a Signal conditioner.
The SGA provides a wide range of signal conditioning for Strain gauges, Load cells, Pressure and Torque transducers.
Figure 1.1 SGA Signal Conditioner
POWER
SUPPLY
STRAIN
GAUGE
AMPLIFIER
OUTPUT
±10V
±5V
0-5V
0-20mA
4-20mA
Inputs
Load Cells
Strain Gauges
Torque Transducers
Pressure Transducers
110/230 V AC
18-24V DC
INPUT
Offered in two versions, the SGA/A for 110/230V AC or 18-24V DC operation and the SGA/D which is DC powered
only.
Transducer
SENSITIVITY
of between 0.1 mV/V and 30 mV/V are possible.
This is achieved by a combination of gain (span) DIP switches and associated
fine adjustment
by a potentiometer.
Similarly transducer zero
OFFSET
and
SCALE DEAD BAND
of up to 79% can be compensated for in the module.
This is achieved again by a combination of zero DIP switches and associated
fine adjustment
by a potentiometer.
The module has built-in
FILTERS
to cancel the field effects of vibration, agitation and electrically noisy
environment.
The on-board low pass filter can be switched in and adjusted (from 1Hz to 5kHz) using a series of DIP switches.
A wide range of proportional output options for currents and voltages can be configured by DIP switch settings.
Both the AC and DC versions are based on a common board and are mounted in an IP65 (NEMA 4X) ABS case.
