The M100-DI1 is a linear integrator which accepts DC inputs
and integrates the input with respect to time. An output is
provided via a relay which gives a pulsed output of the
frequency of which is directly proportional to the amplitude
of the input signal. One of the main uses of the M100-DI1 is
the measurement of Watt and Kilowatt hours. This achieved by
feeding the output of a Watt transducer (M100-WA series)
onto the M100-DI1. The input signal is integrated against time
and the resulting output pulsed from the relay are proportional
to the kWh being consumed. These Pulses then can be fed to
an electro mechanical counter, digital counter or a computer
where the kWh consumed can be stored. Another use is the
measurement of Ampere hours. The M100-DI2 is the same as
M100-DI1 with the additional feature of having 2 relay outputs,
this allows the user to feed one set of pulses to a counter on
a switchboard whilst feeding the other set of pulses to a remote
computer in a control room.

M100-DI1    Single Relay Output 
M100-DI2    Double Relay Output