Product Manual

8
Figure 5
Pulse Output Access
The DR 5-30 electronics design
has an output pulse available for
customers seeking to send information
to interfac ing equipment. This output
pulse is an open collector (a.k.a.
current sinking or NPN) signal suited
for transmission over a 2-conductor,
customer supplied cable.
This output is NOT scaled to any
particular pulse per unit of measure
(i.e. 10 pulses per litre or 100 pulses
per gallon). It is raw meter pulses that
equate to approximately 185 pulses
per gallon of diesel at 20 GPM or
approximately 180 pulses per gallon
of unleaded gasoline at 20 GPM.
Temperature,plumbingcongurations,
uidtypesandowratewillaffectthe
actual value.
The customer must verify accuracy of
equipment before usage.
An environmental sealing strain
relief with O-ring is included with the
DR 5-30 for customer use when
employing the pulse output capability
of the meter.
Recommended cables (or equivalent):
Belden 9501 or 9363, Carol C0451
or Alpha 5640B2201. The strain relief
provided with the DR 5-30 Meter will
accept a cable of .12-.26 inches O.D.
the value, press both CAL and
RESET buttons simultaneously.
“CALEnd”willbedisplayedinthe
TOTAL display (Figure 4) and unit
will now be in normal operation with
field calibrated correction factor
invoked.
NOTE: Factory testing has de-
termined that unleaded
gasoline has a correction
factor of approximately +3.0.
Figure 4
4.“FLdCAL”willbedisplayedinthe
TOTAL display window (about
every 4 seconds) during normal
operation, as a visual cue that you
have invoked and are operating in
Field Calibration mode.
5. All remaining units of measure
remain selectable and the entered
correction will be applied to all units
of measure.
6. To return to factory calibration,
press and hold both CAL and
RESET buttons simultaneously for
about3secondsuntil“FAcCAL”is
displayed in TOTAL display (Figure 5).
Then release buttons. Unit will
return to normal operation in the
factory calibration mode.