Wilden Original PX15, Operation & Maintenance Manual

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H O W T O U S E T H I S E M S C U R V E
PX15 Performance 7 WILDEN PUMP & ENGINEERING, LLC
SETTING 4 PERFORMANCE CURVE EMS CURVE
8.2
GPM
Example data point = Example data point =
Figure 1 Figure 2
0.58
0.48
fl ow multiplier
air multiplier
This is an example showing how to determine fl ow rate and
air consumption for your Pro-Flo X™ pump using the Effi cien-
cy Management System (EMS) curve and the performance
curve. For this example we will be using 4.1 bar (60 psig) inlet
air pressure and 2.8 bar (40 psig) discharge pressure and EMS
setting 2.
Step 1: Identifying performance at setting 4. Locate
the curve that represents the fl ow rate of the
pump with 4.1 bar (60 psig) air inlet pressure.
Mark the point where this curve crosses the
horizontal line representing 2.8 bar (40 psig)
discharge pressure. (Figure 1). After locating
your performance point on the fl ow curve,
draw a vertical line downward until reaching
the bottom scale on the chart. Identify the fl ow
rate (in this case, 8.2 gpm). Observe location
of performance point relative to air consump-
tion curves and approximate air consumption
value (in this case, 9.8 scfm).
Step 2: Determining flow and air X Factors. Locate
your discharge pressure (40 psig) on the verti-
cal axis of the EMS curve (Figure 2). Follow
along the 2.8 bar (40 psig) horizontal line until
intersecting both fl ow and air curves for your
desired EMS setting (in this case, setting 2).
Mark the points where the EMS curves inter-
sect the horizontal discharge pressure line.
After locating your EMS points on the EMS
curve, draw vertical lines downward until
reaching the bottom scale on the chart. This
identifi es the fl ow X Factor (in this case, 0.58)
and air X Factor (in this case, 0.48).
Step 3: Calculating performance for specific EMS
setting. Multiply the fl ow rate (8.2 gpm)
obtained in Step 1 by the fl ow X Factor multi-
plier (0.58) in Step 2 to determine the fl ow rate
at EMS setting 2. Multiply the air consump-
tion (9.8 scfm) obtained in Step 1 by the air
X Factor multiplier (0.48) in Step 2 to deter-
mine the air consumption at EMS setting 2
(Figure 3).
Figure 3
The fl ow rate and air consumption at Setting
2 are found to be 18.2 lpm (4.8 gpm) and 7.9
Nm
3
/h (4.7 scfm) respectively.
.58
4.8
gpm
(Flow X Factor setting 2)
(Flow rate for setting 2)
(air consumption for setting 4)
(Air X Factor setting 2)
(air consumption for setting 2)
9.8
scfm
.48
4.7
scfm
8.2
gpm
(fl ow rate for Setting 4)
Example 1