Tecfluid CP420R - Manual (Page 5)

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2.2 Pulse input
Can be done directly from the instrument to terminals 1 and 2, regardless the polarity.
3 OPERATION
To adapt the transmitter to the meter, the pulses per litre factor specified on the meter
must be programmed.
If the instrument has not been previously programmed or, due to an alteration in the data
memory the instrument recovers the default factory values, then the display will show
“PRESET”. This indication will disappear when the programming sequence has been
completed.
There are three push buttons with the following functions:
3.1 Programming
In all the programming screens, the “RESET” push button exits the screen without saving
the data in the memory, even if changes in the digits have been made or not .
By pushing the two push buttons PROG at the same time, the display will change to the
programming mode. In this mode there are 7 digits (four whole numbers and three
decimals). The value that must be introduced is the pulses per litre factor given on the
label of the COVOL or Turbine.