Nova-Tech LMI Series HH Metering Pump - Manual (Page 27)

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12.2 Programming the Pulse Multiply (Batch) Value
The multiply value is altered by using the (Up) and (Down)
keys to change the value. The pump must be OFF and in the External
Multiply mode. Like the divide value, the valid range for the multiply
value runs from 0 to 999 pulses. When the pump is ON, a single
external pulse will initiate a batch of pump strokes. The number of
remaining pulses are displayed on the LCD screen EXT
X
. When
0 is reached, the display resets to the multiply value. The pump is
now ready for another pulse input.
If a pulse is received before the countdown to 0 is complete, the E4
error code is displayed, and the pump batch count resets to the
programmed multiply value. The batch countdown then continues
from its programmed value. As the countdown continues, the E4
error code EXT
X
will be displayed intermittently until the fault is
corrected. The strokes that remained from the first batch are NOT
accounted for. To clear the fault display, the pump must be stopped
and restarted.
To allow true flow proportioning, the speed in the Multiply mode
is equal to the speed set in the Internal (manual) mode. That
is, if the Internal mode speed is set at 60 SPM, in the External
Multiply mode the pump counts down at 60 SPM.