The Model CSSG is a full featured single loop PID controller designed for use with the Modular Controller Series. The module accepts low level signals from a variety of bridge type transducers, such as load cells, pressure transducers, torque transducers, etc. An optional second signal input is available, providing math capabilities between the two input channels (average, differential, etc.). Each input channel provides a software selectable 5 Volt or 10 Volt stable bridge excitation voltage, capable of driving up to four 350 ohms bridges (combined total per module). The inputs are software selectable for +/-20 mV, +/-33 mV, or +/-200 mV full scale. With solid state or relay outputs, plus an analogue output, the CSSG module can perform virtually any combination of time-proportioning or linear control. The discrete outputs may also be assigned to one of seven internal soft alarms; and the linear output can be assigned to transmit virtually any internal variable. In addition, digital tare (re-zero), batch totalizer and peak/valley (max/min) are provided.