The Sumatron Model 100T Metering Totalizer is designed to accept and scale parallel 3-wire KYZ pulses (form C transitions) or 2-wire pulses (form A transitions) on two different input channels and provide additive or subtractive totalizing for display and output. The totalized display will indicate peak fixed and sliding window demands, present demand and totalized energy pulses.

The Sumatron Model 200 Metering Totalizer is designed to accept parallel pulses from two different pulse initiators and output the pulses in serial form for single channel recording. The pulses must have the same scale factor and are represented by the form C contact transitions of the initiators. Metering totalizers are normally applied to reduce the number of recording channels required and to provide real time coincident demand metering capability.

The Sumatron Model 600 Metering Totalizer is designed to accept parallel pulses from up to six different pulse initiators and output the pulses in serial form for single channel recording. The pulses in this case must have the same scale factor and are represented by the form C contact transitions of the initiators. Metering totalizers are normally applied to reduce the number of recording channels required and to provide real time coincident demand metering capability.