WQG-10029-01
programmed flow rate. This number should
be enhanced as follows. For a W2000 DRE the
maximum flow rate is 2500 GPM at 20.87 hertz. The
2500 could be used for RAte dSP above, but to
improve the accuracy of the hertz rate it should be
set to 25000. If the decimal was moved one place to
the right, hertz value must also be moved one place
to keep proportions the same. Therefore, RAte dP
should be 0.0, RAtE dSP should be 25000.0 and the
hertz should be set to 208.7.
LO-Udt – Set to 5.0. This step sets the time between
flow rate display updates. If the flow rate is erratic
due to varying meter signals, increasing this
number reduces display fluctuations. May be set
between 0.1 and 99.9 seconds.
HI-Udt – Set to 10.0. Sets the number of seconds the
flow rate will display for a meter pulse before going
to zero. May be set between 0.1 and 99.9.
Module #3 (3-dSPLAY)
SEL Enb – yES.
RST Enb – b total (Enables the RST button on the
front panel to reset the b totalizer.) To change set as
follows:
Total – Only counter A is resettable.
both – both counters A and B are resettable.
none – Neither counter is resettable.
d-ScroLL – Typically set to nO; set to yES to have the
display automatically scroll between total, b total
and flow rate.
d-COLOr – Typically set to rED, if a Green display is
desired set to Grn.
d-LEVEL – Typically set to 5, to reduce the intensity
of the display reduce the number.
Pro CodE – 024. This is the factory set cde. Although
a code is not necessary, it is an electronic lock that
prevents tampering.
FACT sET – nO.
Module #4 (4-SETPT)
SPt ASN – For a contact closure based on the flow
rate set to rATE. For pulsed outputs based on total
set to Count A.
SPt ACT – If rate was selected above to bound if
contacts are to close when the setpoint is exceeded
Act-Pak® Electronic Instrumentation
Models 1100D and 1100DN Quick Guide
and open below the setpoint. To latch or hold the
contacts closed once the flow rate is exceeded set
to LAtCH. A manual reset is required to release
latched contacts. If SPt ASN is set to Count A set to
t-OUt.
SPt tout – (Active only if t-OUt is selected above.)
Sets the number of seconds that the relay is closed
each time it is activated.
SPT VAL – For flow rate set point applications set
the actual flow rate where the closure is desired. In
quantity applications set in the number of counts
on counter A to be accumulated before an output
pulse is generated.
SPt P-UP – SAVE.
CntA rSt – ZERO.
AutO rST – nO.
SPtrST – nO.
Ch- COLOR – nO, to change display colors when
the set point is exceeded set to yES.
Arranging Mechanical Totalizer and Option B
Factors
All Act-Pak instruments containing a totalizer and/
or Option B have provisions for field adjusting the
factor circuit.
The circuit is configured in binary code and is
adjustable to any whole number from 1 to 4095.
To determine the factor, the following procedure
should be used.
1. Determine the quantity to be indicated by the
totalizer or Option B contact closure.
2. Determine the value of a pulse from the meter
in either quantity per pulse (cubic feet/pulse) or
pulses per quantity (pulses/cubic foot).
3. Determine new factor as follows (assuming desired
instrument output is in 1000 cubic feet increments
and meter output is 0.564 cubic foot per pulse).
Calculate the pulses per cubic foot by
determining the reciprocal of 0.564:
