Honeywell Hauck MEGASTAR MS-25 Instructions Manual page 25

BURNER HOUSING
ACCESS DOOR
COMPRESSED AIR FLOW METER
The compressed air flow meter is offered with a standard multi-pressure flow scale.
The multi-pressure flow scale has a vertically graduated scale, calibrated for air in standard
cubic feet per minute (scfm) at 1.0 s.g. (70°F at 100 psig), or liters per second (lps) at 1.0 s.g.
(21°C at 6.9 bar). The multi-pressure scale design allows for use at supply pressures from 40 -
130 psig in 10 psig increments (3.0 - 9.0 bar in 1 bar increments) .
To determine the compressed air flow rate, refer to Figure 12 and proceed as follows:
1. Read the inlet pressure on the pressure gauge of the compressed air flow meter.
2. Select the appropriate inlet pressure (psig) vertical line, or interpolated value closest to the
gauge reading, and follow the line upward until it intersects the brightly colored horizontal
indicator bar.
3. From the intersecting point on the horizontal indicator bar, follow the slope as shown on
the diagonal lines to the 100 psig inlet pressure vertical line and interpolate the scfm or
lps flow rate (Note for the example shown in Figure 12, with an inlet pressure of 60 psig,
the compressed air flow rate is approximately 40 scfm).
PRIMARY AIR TUBE
A
Figure 11. Primary Air Tube Pipe Plug Location
PIPE PLUG
DETAIL A
1
Page 25
MS-9
W7084
(NOT TO SCALE)