3.2.4 Magnetic pick-off input
Flowmeters incorporating a magnetic pick-off to
sense flow will have a low level voltage output unless
the flowmeter incorporates an amplifier.
CoiL
in the
BA537E and BA538E input configuration menu is a
low level voltage pulse input intended for use with a
magnetic pick-off.
The Rate Totalisers contain a
configurable debounce circuit to prevent false
triggering of the instrument. See section 5.7.
3.2.5 Voltage pulse input
Two voltage pulse input ranges are selectable in the
BA537E and BA538E Rate Totaliser configuration
menu,
VoLt5 L
and
VoLt5 H
as shown in section 3.2.
The Rate Totalisers contain a configurable debounce
circuit to prevent false triggering of the instrument.
Three
levels
of
de-bounce
protection
are
independently available.
See section 5.7.
3.3 Remote reset
The Rate Totaliser's total display may be remotely
reset to zero by connecting terminals RS1 and RS2
together for more than one second.
Permanent
interconnection inhibits totalisation. Remote resetting
may be accomplished by any switch contact.
Note:
Both Rate Totalisers may be configured to
reset the total display to zero by operating the
&
and
*
push buttons simultaneously for
more than two seconds in the totalising mode
i.e. when the instrument is displaying flow.
See 5.19
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