PITOT TUBE TRAVERSE, RECTANGULAR DUCT - HVAC-Talk
Transcript of PITOT TUBE TRAVERSE, RECTANGULAR DUCT - HVAC-Talk
PITOT TUBE TRAVERSE, RECTANGULAR DUCT Job. Job No.. Date
Location. System
Location of Duct. i SP
Duct Size
Duct Area Sq Ft
Required CFM Required FPM
Actual CFM ActualFPM
Percent of Design: Actual CFM Required CFM
B
D
Column Totals
o
• i n i t i a l • Final Readings
ml
DUCT
1
DUCT W I D T H T O T A L ] ,
Divide recommended spacing into duct v A L L COLUMNS'- ( width for equal spacing between points ~ y of readings and write in each space. / Total No.\ Split remainder in half for spacing at \f points,
= Total of a l l
Columns
) Average FPM sides of duct and write i n .
3. To determine the actual average FPM, total the FPM in each column, add the columns together and divide by total number of points in traverse.
CONVERTING VP INTO FPM
RECOMMENDED EQUAL SPACING BETWEEN POINTS OF READING
Width Range Spacing of Duct Inches in inches
8-14 5 lS -24 6 25-36 7 37-48 8 4 9 - 6 0 9 61-72 10
73-64 11 85-96 12
Wpnrifis E n a i n e e r i n q and C o n t r a c t i n g S e r v i c e s
V P F P M V P F P M V P F P M V P F P M V P F P M
.01 400 .31 2230 .61 3127 .91 3821 1.21 4405
.02 566 .32 2260 .62 3153 .92 3842 1.22 4423
.03 693 .33 2301 .63 3179 .93 3863 1.23 4442
.04 801 .34 2335 .64 3204 .94 3884 1.24 4460
.05 895 .35 2369 .65 3229 .95 3904 1.25 4478
.06 981 36 2403 .66 3254 96 3924 1.26 4495
.07 1060 .37 2436 67 3279 .97 3945 1.27 4513
.08 1133 .38 2469 58 3303 98 3 % 5 1.28 4531
.09 1201 ,39 2501 ,69 3327 .99 3985 1.29 4549
.10 1266 .40 2533 ,70 3351 1.00 4005 1.30 4566
.11 1328 .41 2563 .71 3375 1 0 1 4025 1.31 4583
.12 1387 .42 2595 .72 3398 1.02 4045 1.32 4601
.13 1444 .43 2626 73 3422 1.03 4064 1.33 4619
.14 1498 .44 2656 .74 3445 1.04 4084 1.34 4636
.15 1551 .45 2687 .75 3468 1.05 4103 1.35 4653
.16 1602 .46 2716 .76 3491 1.06 4123 1.36 4671
.17 1651 .47 2746 .77 3514 1.07 4142 1.37 4688
.18 1699 .48 2775 .78 3537 1.08 4162 1.38 4705
.19 1746 .49 2804 .79 3560 1.09 4181 1.39 4722
.20 1791 ,50 2832 .80 3582 1.10 4200 1.40 4739
.21 1835 ,51 2860 .81 3604 1.11 4219 1.41 4756 22 1879 ,52 2888 ,32 3625 1.12 4238 1.42 4773
.23 1921 .53 2916 ,83 3657 1.13 4257 1-43 4790
.24 1962 ,54 2943 .84 3669 1.14 4276 1.44 4806
.25 2003 55 2970 .85 3690 1.15 4295 1.45 4823
.26 2042 ,56 2997 .86 3709 1.16 4314 1.46 4840
.27 2081 ,57 3024 .87 3729 1.17 4332 1,47 4856
.28 2119 ,58 30 5C 38 3758 1.18 4350 1 48 4873
.29 2157 ,59 3076 .89 3779 1.19 4368 1,49 4889
30 2193 60 3102 .90 3800 1.20 4386 1-50 4905
7/80 Form TAB 203
OUTLET AIR BALANCE REPORT Project, Job No. Date
System
Instniments Used JTested by:.
ROOM AREA SERVED
OPEMING REQUIRED
No. Model Size \ Vel CFM
PRELIMINARY FINAL
Vel CFM