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PRP195 & PRP230 Application Engineering Basics Throughout our catalog, you will find terminology used for air moving selection and product sizing. Below are a few of the key terms:

Flow

Specific Gravity

• Volume Rate/Time • Rotron charts are in SCFM, m3/min, or L/S • SCFM = Standard Cubic Feet Per Minute (American) where temperature = 68°F, air density = 0.075 lb/cubic foot, and altitude = 0 feet above sea level • M3/min = Cubic Meters Per Minute (Metric) • L/sec = Liters Per Second (Metric) • 1 m3/min = 35.3 SCFM • 1 L/sec = 2.119 SCFM • See Standard Engineering Conversions for other flows on pg. I-2

• • • •

Pressure • Force/Area • Rotron charts are in IWG, PSIG, MM of Water, IHG, or mbar • IWG = Inches of Water Gauge (American) • PSIG = Pounds Per Square Inch Gauge (American) • MM of Water = Millimeter of Water Gauge (Metric) • IHG = Inches of Mercury Gauge (American) • mbar = Millibar Gauge (Metric) • PSIA = Pounds Per Square Inch Absolute (American) • 27.7 IWG = 1 PSIG • 703.58 MM of Water = 1 PSIG • 2.036 IHG = 1 PSIG • 0.069 Bars = 69 mbar = 1 PSIG • Standard Atmosphere = 0 PSIG = 14.7 PSIA • See Basic Fan Laws Chart for correcting pressure due to speed or density changes on pgs. I-5 and I-6

Density • • • •

Density Ratio Relative to Air Standard Air SG = 1.0 Methane SG = 0.55 See Specific Gravity Chart for other gases on pg. I-4

Velocity • • • • • • • • •

Distance/Time or Flow/Area FPM = Feet Per Minute (American) MPH = Miles Per Hour (American) M/min = Meters Per Minute (Metric) Km/h = Kilometers Per Hour (Metric) 88 FPM = 1 MPH 26.82 M/min = 1 MPH 1.609 Km/h = 1 MPH See Standard Engineering Conversion Chart for other velocities on pg. I-2 • See Orifice Flow Calculation Chart for air flow equations on pg. I-7

Pressure Drop/ Back Pressure/ Impedance • Friction causes air to slow down and lost energy is measured in pressure drop terms • Typical pressure drop areas include piping, elbows, accessories and system • Each fixed system has a fixed system impedance caused by a single or multiple pressure drop points • Changing the system impedance will cause blowers work point to change • Changing the blower with fixed system impedance will change the working back pressure • See Friction Loss Per Foot of Tubing and Fitting Charts on pg. I-8

Weight/Volume Standard Air = 0.075 lb/cubic foot See Density Chart for other gases on pg. I-4 See Density Correction Chart due to altitude and temperature changes on pg. I-3

Rev. 2/04

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AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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PRP195 & PRP230 Application Engineering Basics Standard Engineering Conversions MULTIPLY Atmospheres Atmospheres Atmospheres Atmospheres Atmospheres Atmospheres Atmospheres Bars Bars Bars Bars British Thermal Units British Thermal Units British Thermal Units British Thermal Units British Thermal Units British Thermal Units Centimeters of Mercury Centimeters of Mercury Centimeters of Mercury Centimeters of Mercury Centimeters/Second Centimeters/Second Cubic Centimeters Cubic Centimeters Cubic Centimeters Cubic Centimeters Cubic Feet Cubic Feet Cubic Feet Cubic Feet Cibic Feet Cubic Feet Cu. Ft. of Water (60°F) Cubic Feet/Minute Cubic Feet/Minute Cubic Feet/Minute Cubic Inches Cubic Inches Cubic Inches Cubic Inches Cubic Meters Cubic Meters Cubic Meters Cubic Meters Cubic Yards Cubic Yards Cubic Yards Cubic Yards Feet Feet Feet Feet Feet of Air (1 atmosphere 60°F) Feet/Minute Feet/Minute Feet/Minute Feet/Minute Feet/Minute Grams/Cu. Cm. Horsepower Horsepower Horsepower Horsepower Horsepower-Hours Inches Inches Inches of Mercury Inches of Mercury Inches of Mercury Inches of Mercury Inches of Mercury Inches of Water Inches of Water Inches of Water Inches of Water Inches of Water

BY 76.0 29.92 33.90 10,333 1.013 x 105 14.70 760 0.9869 1. x 106 1.020 x 104 14.50 0.2520 777.5 3.927 x 10-4 1054 107.5 2.928 x 10-4 0.01316 0.4461 136.0 0.1934 1.969 0.6 3.531 x 10-5 6.102 x 10-2 10-6 10-3 2.832 x 104 1728 0.02832 0.03704 7.481 28.32 62.37 472.0 0.4720 62.4 16.39 5.787 x 10-4 1.639 x 10-5 2.143 x 10-5 106 35.31 61,023 1.308 7.646 x 105 27 46,656 0.7646 30.48 12 0.3048 1/3

TO OBTAIN Cms. of Mercury Inches of Mercury Feet of Water Kgs./Sq. Inch Pascals Pounds/Sq. Inch Torrs Atmospheres Dynes/Sq. Cm. Kgs./Square Meter Pounds/Sq. Inch Kilogram-Calories Foot-Pounds Horsepower-Hours Joules Kilogram-Meters Kilowatt-Hours Atmospheres Feet of Water Kgs./Square Meter Pounds/Sq. Inch Feet/Minute Meters/Minute Cubic Feet Cubic Inches Cubic Meters Liters Cubic Cms. Cubic Inches Cubic Meters Cubic Yards Gallons Liters Pounds Cubic Cms./Sec. Liters/Second Lbs. of Water/Min. Cubic Centimeters Cubic Feet Cubic Meters Cubic Yards Cubic Centimeters Cubic Feet Cubic Inches Cubic Yards Cubic Centimeters Cubic Feet Cubic Inches Cubic Meters Centimeters Inches Meters Yards

5.30 x 10-4 0.5080 0.01667 0.01829 0.3048 0.01136 62.43 42.44 33,000 10.70 745.7 2547 2.540 103 0.03342 13.60 345.3 25.40 0.4912 0.002458 0.07355 25.40 5.204 0.03613

Pounds/Square Inch Centimeters/Sec. Feet/Second Kilometers/Hour Meters/Minute Miles/Hour Pounds/Cubic Foot British Thermal Units/Min. Foot-Pounds/Min. Kg.-Calories/Min. Watts British Thermal Units Centimeters Mils Atmospheres Inches of Water Kgs./Square Meter Mms. of Mercury Pounds/Square In. Atmospheres Inches of Mercury Kgs./Square Meter Pounds/Square Ft. Pounds/Square In.

MULTIPLY KGS./Cubic Meter Kilometers Kilowatts Kilowatts Kilowatts Kilowatts Kilowatt-Hours Liters Liters Liters Log10N Log N or Ln N Meters Meters Meters Meters Meters/Minute Meters/Minute Meters/Minute Meters/Minute Miles Miles Miles Miles/Hour Miles/Hour Miles/Hour Miles/Hour Miles/Hour Mms. of Mercury Mms. of Mercury Mms. of Mercury Pints (Liq.) Pints (U.S. liquid) Pints (U.S. liquid) Pounds Pounds Pounds Pounds of Carbon to CO2 Pounds of Water Pounds of Water Pounds of Water Evaporated at 212°F Pounds/Cubic Foot Pounds/Square Foot Pounds/Square Inch Pounds/Square Inch Pounds/Square Inch Pounds/Square Inch Pounds/Square Inch Pounds/Square Inch Square Centimeters Square Centimeters Square Centimeters Square Feet Square Feet Square Inches Square Inches Square Inches Square Inches Square Inches Square Kilometers Square Kilometers Square Kilometers Square Meters Square Meters Temp. (Degs. C.) + 273 Temp. (Degs. C.) + 17.8 Temp. (Degs. F.) + 460 Temp. (Degs. F.) -32 Watts Watts Watts Watts Watts Watts Watts-Hour Watts-Hour Watts-Hour

BY 0.06243 3281 56.92 737.6 1.341 14.34 3415 103 61.02 10-3 2.303 0.4343 100 3.2808 39.37 10-3 1.667 3.281 0.06 0.03728 5280 1.6093 1760 44.70 88 1,467 1.6093 26.82 0.0394 1.3595-3 0.01934 28.87 473,179 16 444,823 453.6 16 14,544 27.68 0.1198

TO OBTAIN Pounds/Cubic Foot Feet British Thermal Units/Min. Foot-Pounds/Sec. Horsepower Kg.-Calories/Min. British Thermal Units Cubic Centimeters Cubic Inches Cubic Meters LogEN or Ln N Log10N Centimeters Feet Inches Kilometers Centimeters/Sec. Feet/Minute Kilometers/Hour Miles/Hour Feet Kilometers Yards Centimeters/Sec. Feet/Minute Feet/Second Kilometers/Hour Meters/Minute Inches of Mercury Kgs./Square Cm. Pounds/Square Inch Cubic Inches Cubic Centimeters Ounces (U.S. fluid) Dynes Grams Ounces British Thermal Units (mean) Cubic Inches Gallons

970.3 16.02 4,882 0.06804 27.7 2.036 703.1 6.895 x 10 3 51.715 1.973 x 105 1.076 x 10-3 0.1550 929.0 0.09290 1.273 x 106 6.452 6.944 x 10-3 106 645.2 10.76 x 106 106 1.196 x 106 10.764 1.196 1 1.8 1 5/9 0.05692 107 44.26 1.341 x 10-3 0.01434 10-3 3.415 1.341 x 1010-3

British Thermal Units Kgs./Cubic Meter Kgs./Square Meter Atmospheres Inches of Water Inches of Mercury Kgs./Square Meter Pascals Millimeters of Mercury at 0°C Circular Mils Square Feet Square Inches Square Centimeters Square Meters Circular Mils Square Centimeters Square Feet Square Mils Square Millimeters Square Feet Square Meters Square Yards Square Feet Square Yards Abs. Temp. (Degs. C.) Temp. (Degs. Fahr.) Abs. Temp. (Degs. F.) Temp. (Degs. Cent.) British Thermal Units/Min. Ergs/Second Foot-Pounds/Min. Horsepower Kg.-Calories/Min. Kilowatts British Thermal Units Horsepower/Hours Kilowatt-Hours Rev. 2/04

AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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EN 404 Application Engineering Basics Density Correction Chart

Rev. 2/04

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AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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EN 404 Application Engineering Basics Specific Gravity and Density of Various Gases Chemical Formula C2H2 – NH3 A C6H6 CO2 CI2 C2H6 C2H4 He H2 H2S CH4 CH3CI N2 O2 C3H8 SO2 H2O

Gas or Vapor Acetylene Air Ammonia Argon Benzene Carbon Dioxide Chlorine Ethane Ethylene Helium Hydrogen Hydrogen Sulfide Methane Methyl Chloride Nitrogen Oxygen Propane Sulfer Oxide Water Vapor

Temperature Conversion Chart at 60°F (1 ATM)

Specific Gravity 0.899 1.00 0.587 1.377 2.70 1.539 2.448 1.038 0.969 0.138 0.0695 1.19 0.555 1.785 0.967 1.105 1.55 2.26 0.622

Density (lbs./cu/ ft.) .0686 .0763 .0454 .1053 .205 .1166 .0738 .0799 .0739 .01054 .00531 .0897 .0424 .1356 .0738 .0843 .1180 .1720 .0373

Explosive Atmosphere Classification North American

European

Class I Group A Group B Group C

Zone 1 Group II C Group II C Group II B

Group D

Group II A

Class II Group E Group F Group G

— — —

Acetylene Hydrogen or equivalent hazard Ethyle ether vapors, ethylene or cyclopropane Gasoline, hexane, naptha, benzene, butane, alcohol, acetone, benzol, lacquer vapors or natural gas Metal dust Carbon black, coal or coke dust Flour, starch or grain

*In the center column, find the temperature to be converted. The equivalent temperature is in the left column, if converting to Celsius, and in the right column, if converting to Fahrenheit. °C -78.9 -73.3 -67.8 -62.2 -56.7 -51.1 -45.6 -40.0 -34.4 -28.9 -23.3 -17.8 -17.2 -16.7 -16.1 -15.6 -15.0 -14.4 -13.9 -13.3 -12.8 -12.2 -11.7 -11.1 -10.6 -10.0 -9.4 -8.9 -8.3 -7.8 -7.2 -6.7 -6.1 -5.6 -5.0 -4.4 -3.9 -3.3 -2.8 -2.2 -1.7 -1.1 -0.6 0 0.6 1.1

Temp -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

°F = 9/5C + 32 °C = 5/9 (F - 32)

°F -166 -148 -130 -112 -94 -76 -58 -40 -22 -4 14 32 33.8 35.6 37.4 39.2 41.0 42.8 44.6 46.4 48.2 50.0 51.8 53.6 55.4 57.2 59.0 60.8 62.6 64.4 66.2 68.0 69.8 71.6 73.4 75.2 77.0 78.8 80.6 82.4 84.2 86.0 87.8 89.6 91.4 93.2

°C 1.7 2.2 2.8 3.3 3.9 4.4 5.0 5.6 6.1 6.7 7.2 7.8 8.3 8.9 9.4 10.0 10.6 11.1 11.7 12.2 12.8 13.3 13.9 14.4 15.0 15.6 16.1 16.7 17.2 17.8 18.3 18.9 19.4 20.0 20.6 21.1 21.7 22.2 22.8 23.3 23.9 24.4 25.0 25.6 26.1 26.7

Temp 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

°F 95.0 96.8 98.6 100.4 102.2 104.0 105.8 107.6 109.4 111.2 113.0 114.8 116.6 118.4 120.2 122.0 123.8 125.6 127.4 129.2 131.0 132.8 134.6 136.4 138.2 140.0 141.8 143.6 145.4 147.2 149.0 150.8 152.6 154.4 156.2 158.0 159.8 161.6 163.4 165.2 167.0 168.8 170.6 172.4 174.2 176.0

ABSOLUTE RANKIN (R) ABSOLUTE KELVIN (K)

°C 27.2 27.8 28.3 28.9 29.4 30.0 30.6 31.1 31.7 32.2 32.8 33.3 33.9 34.4 35.0 35.6 36.1 36.7 37.2 37.8 43 49 54 60 66 71 77 82 88 93 99 100 104 110 116 121 127 132 138 143 149 154 160 166 171 177

Temp 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 110 120 130 140 150 160 170 180 190 200 210 212 220 230 240 250 260 270 280 290 300 310 320 330 340 350

°F 177.8 179.6 181.4 183.2 185.0 186.8 188.6 190.4 192.2 194.0 195.8 197.6 199.4 201.2 203.0 204.8 206.6 208.4 210.2 212.0 230 248 266 284 302 320 338 356 374 392 410 413 428 446 464 482 500 518 536 554 572 590 608 626 644 662

°C 182 188 193 199 204 210 216 221 227 232 238 243 249 254 260 266 271 277 282 288 293 299 304 310 316 321 327 332 338 343 349 354 360 366 371 377 382 388 393 399 404 410 416 421 427 432

Temp 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 710 720 730 740 750 760 770 780 790 800 810

°F 680 698 716 734 752 770 788 806 824 842 860 878 896 914 932 950 968 986 1004 1022 1040 1058 1076 1094 1112 1130 1148 1166 1184 1202 1220 1238 1256 1274 1292 1310 1328 1346 1364 1382 1400 1418 1436 1454 1472 1490

R = °F + 460 K = °C + 273

NEMA Classifications NEMA

Type 1 Type 2 Type 3 3R 3S Type 4 4X Type 5

– General Purpose – Indoor – Dripproof – Indoor – Dusttight, Raintight and Sleet (Ice) Resistant – Outdoor – Rainproof and Sleet (Ice) Resistant – Outdoor – Dusttight, Raintight and Sleet (Ice) Proof – Outdoor – Watertight and Dusttight – Indoor – Watertight, Dusttight and Corrosion Resistant – Outdoor – Superseded by Type 12 for Control Apparatus

Type 6 Type 7 Type 8 Type 9 Type 10 Type 11 Type 12 Type 13

– Submersible, Watertight, Dusttight and Sleet Resistant – Indoor and Outdoor – Class I, Group A, B, C or D Hazardous Locations; Air Break Equipment – Indoor – Class I, Group A, B, C or D Hazardous Locations; Oil-immersed Equipment – Indoor – Class II, Group E, F or G Hazardous Locations; Air-break Equipment – Indoor – Bureau of Mines – Corrosion Resistant and Dripproof; Oil-immersed – Indoor – Industrial Use, Dusttight and Driptight – Indoor – Oiltight and Dusttight – Indoor

Ref: NEMA Standards Publication, Pub. No. 1CS–1970 Rev. 2/04 AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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Application Engineering Basics Physical Laws for Blower Applications In the following formulae these symbols are used: P – Pressure in pounds per square inch (PSI) or inches of mercury column (inches Hg) CFM – Volume in cubic feet per minute RPM – Speed in revolutions per minute D – Density in pounds per cubic foot (lbs./cu. ft.) H – Height of air or gas column (ft.) SG – Specific Gravity (ratio of density of gas to the density of air)

“Standard Air” – Air at 68°F (absolute temperature 528°) and 29.92” Hg. (barometric pressure at sea level). The density of such air is 0.075 lbs./cu. ft. and the specific volume is 13.29 cu. ft./ lb. The specific gravity is 1.0. The outlet pressure of a blower depends on the condition of the air or gas at the inlet. The inlet condition is influenced by: a – Specific gravity (The ratio of density of the gas to density of standard air) b – Altitude (location of blower) c – Temperature of inlet air

Basic Fan Laws Chart VARIABLE

VOLUME

PRESSURE

HORSEPOWER

WHEN SPEED CHANGES

Varies DIRECT with Speed Ratio RPM2 CFM2 = CFM1 RPM1

Varies with SQUARE of Speed Ratio RPM2 2 P2 = P1 RPM1

Varies with CUBE of Speed Ratio RPM2 3 HP2 = HP1 RPM1

Does Not Change

Varies DIRECT with Density Ratio D2 P2 = P1 D1

Varies DIRECT with Density Ratio D2 HP2 = HP1 D1

(

WHEN DENSITY CHANGES

)

(

)

( )

(

)

( )

Volume The Volume changes in direct ratio to the speed. Example – A blower is operating at 3500 RPM and delivering 1000 CFM. If the speed is reduced to 3000 RPM, what is the new volume?

V1 = Original Volume (1000 CFM) V2 = New Volume RPM1 = Original Speed (3500 RPM) RPM2 = New Speed (3000 RPM) V2 = V1

1

RPM ( RPM ) 2

= 1000 x

1

1

3000 ( 3500 )

= 1000 x .857 = 857 CFM

Pressure Pressure (barometric) varies in direct proportion to altitude. Example – A blower is to operate at an elevation of 6000 feet and is to deliver 3 PSI pressure. What pressure (standard air) blower is required?

Let: V1 = Volume of standard air (1000 CFM) V2 = Volume of thinner air Hg1 = Barometric pressure sea level (29.92) Hg2 = Barometric pressure 6000’ (23.98) Hg 1 29.92 = 1000 x = 1248 CFM Hg 2 23.98

29.92 Pressure = 3 x = 3.75 or 3 3/4 lb. 23.98

V2 = V1 x

If it is desired to determine what pressure a 3 lb. (standard air) blower will deliver at 6000 feet –

The pressure changes as the square of the speed ratio.

23.98 Pressure = 3 x = 2.4 or about 2 1/2 lb. 29.92 When a blower is to operate at a high altitude it is frequently specified that the blower be capable of handling a given volume of “standard air”. It is then necessary to determine the equivalent volume of air at the higher altitude. Example – A blower is to operate 6000 feet altitude and is to handle 1000 CFM of standard air. What is the CFM of air the blower must handle at 6000 feet altitude?

Example – A blower is operating at a speed of 3500 RPM and delivering air at 5.0 pounds pressure. If the speed is reduced to 3000 RPM, what is the new pressure? P1 = Original Pressure (5 lbs.) P2 = New Pressure RPM1 = Original Speed (3500 RPM) RPM2 = New Speed (3000 RPM) P2 = P1

2

RPM ( RPM ) 2

1

= 5x

2

3000 ( 3500 )

= 5 x .735 = 3.68 pounds

Rev. 2/04

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AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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Application Engineering Basics The Air Density varies in inverse proportion to the absolute temperature. Example – A blower is to handle 200°F air at 3 PSI pressure. What pressure (standard air) blower is required? Let: P1 = Pressure hot air (3 PSI) P2 = Pressure standard air AT1 = Absolute temperature hot air (200+460=660°F) AT2 = Absolute temperature standard air (68+460=528°F) P2 = P1 x

AT1 AT2

AT2 AT1

Example – A 3 lb. (standard air) blower is to be used to handle gas having a specific gravity of 0.5. What pressure does the blower create when handling the gas? Let: Pa = Air pressure (3 lb.) Pg = Gas pressure SG = Specific gravity of gas (0.5) Pg = Pa x SG = 3 x .5 = 1.5 lb.

= 3 x 660 = 3.75 or 3 3/4 lb. 528

A blower is capable of delivering 3 PSI pressure with standard air. What pressure will it develop handling 200°F inlet air? P1 = P2 x

Pressure varies in direct proportion to the density.

= 3 x 528 = 2.4 or about 2 1/2 lb. 660

If we are required to handle a gas having a specific gravity of 0.5 at 1.5 lb. pressure, we can determine the standard air pressure blower as follows: Let: Pa =

Pg 1.5 = = 3 lb. SG .5

The following table gives the barometric pressure of various altitudes: Absolute Pressure At Altitudes Above Sea Level (Based on U.S. Standard Atmosphere) Altitude Feet

Pressure In. Hg. PSIA

0 500 600 700 800 900 1,000 1,500 2,000

29.92 29.38 29.28 29.18 29.07 28.97 28.86 28.33 27.82

14.70 14.43 14.38 14.33 14.28 14.23 14.18 13.90 13.67

Altitude Feet 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000 6,500

Pressure In. Hg. PSIA

Altitude Feet

Pressure In. Hg. PSIA

27.31 26.81 26.32 25.84 25.36 24.89 24.43 23.98 23.53

7,000 7,500 8,000 8,500 9,000 9,500 10,000

23.09 22.65 22.22 21.80 21.38 20.98 20.58

13.41 13.19 12.92 12.70 12.45 12.23 12.00 11.77 11.56

11.34 11.12 10.90 10.70 10.50 10.90 10.10

Horsepower The horsepower changes as the cube of the speed ratio. Example – A blower is operating at a speed of 3500 RPM and requiring 50 horsepower. If the speed is reduced to 3000 RPM, what is the new required horsepower? HP1 = Original Horsepower (50) HP2 = New Horsepower RPM1 = Original Speed (3500 RPM) RPM2 = New Speed (3000 RPM) HP2 = HP1 x

3

3

RPM = 50 x 3000 = 50 x .630 = 31.5 horsepower (RPM ) (3500) 2

Horsepower vs. Specific Gravity & Ratio of density. The horsepower varies in direct proportion to the specific gravity (ratio of density of gas to density of air). Example – A standard air blower requires a 10 HP motor. What horsepower is required when this blower is to handle a gas whose specific gravity is 0.5? HP = 10 x 0.5 = 5 horsepower It is possible that several of the above modifications may be required on one installation. Therefore, it may be necessary to use various combinations of these formulae.

1

The above is known as the 1-2-3 rule of blowers.

Rev. 2/04 AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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EN 404 Application Engineering Basics Orifice Flow Calculation To determine air flow through an orifice: V = CK √ P Q = AV VP = V 2 K Where: V = Velocity in feet per minute (fpm) C = Orifice Coefficient K = Constant = 14,786 when P is expressed in In. Hg 21,094 when P is expressed in PSIG 4,005 when P is expressed in In. of Water (Above constants are based on an air density of 0.075 lbs/ft3) P = Pressure differential across the orifice Q = Flow rate in cubic feet per minute (CFM) A = Total orifice area expressed in square feet VP = Velocity pressure (units are those of pressure)

ORIFICE PRESSURE DROP AS A FUNCTION OF FLOW AND ORIFICE AREA (C=.65)

( )

Coefficient C for Orifices Under Vacuum or Pressure Flow

Area of Orifices Orifice Diameter in Inches Diameter in Inches

Square Inches

Square Feet

1/8 3/16 1/4 3/8 1/2 5/8 7/8 1.0

.01227 .02761 .04908 .11044 .19634 .30679 .60132 .78539

.000085 .00019 .00034 .00076 .00136 .00213 .00417 .00545

Orifice area (in sq. inches) = .25 X π X (orifice diameter in inches) 2 Orifice area (in sq. feet) = Area in sq. inches ÷ 144

Rev. 2/04

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EN 404 Application Engineering Basics Friction Loss Per Foot of Tubing

Friction Loss in Fittings To calculate friction loss in fittings use chart below. This chart will yield equivalent lengths (in feet) of tubing. Use this length with graph above to find friction loss in inches of water column. NOMINAL PIPE SIZE (INCHES)

1 1/4 1 1/2 2 2 1/2 3 4 5 6 8

EQUIVALENT TUBING LENGTH (FEET)

90° EL

45° EL

3 4 5 6 7 10 12 15 20

1.5 2 2.5 3 4 5 6 7.5 10 Rev. 2/04

AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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EN 404 Application Engineering Basics Noise Facts • • • • •

OSHA (Occupational Safety & Health Administration) regulates and monitors in-plant noise. Allowable noise is a function of dBA level at certain distance over an exposure time. OSHA regulations state 90 dBA for an 8 hour work period using slow responic setting on meter. Adding a second noise producer of equal dBA will add 3 dBA to the first dBA reading. Sound pressure level (SPL) decreases with distance (d)

( d2 )

(SPL)2 = (SPL)1 - 20LOG d1 Therefore, each doubling of distance results in 6 dBA reduction.

Loudness Levels of Familiar Noises (Approximate Average Including Ear Network) 1013

130

Threshold of Painful Feeling

AVERAGE

QUIET

VERY QUIET

SOUND PROOF ROOMS

10

120

1011

110

1010

100

109

90

108 107 106 105

Loudness Levels in Decibels

N O I S E

NOISY

A P P R O X I M A T E

L E V E L S

DEAFENING

Relative Intensities (Intensity Above Threshold = 1016 watts per sq. cm.)

Airplane and Propeller at 10 Ft. 12

Train Passing at High Speed

Riveter at 30 Ft. Auto Horn at 20 Ft. Pneumatic Drill at 10 Ft. Subway Train Fire Siren at 75 Ft. Noisy Street Railway Noisy Street Police Whistle at 15 Ft. Auto at 60 MPH

80 70 60

Very Noisy Restaurant. Auto at 40 MPH Average Stenographic Room Factories. Auto at 20 MPH Noise in Pullman (Windows Shut) Noisy Office Average Restaurant Dept. Store. Average Conversation at 3 Ft. Average Office. Quiet Street Noisy Residence

50

104

40

103

30

102

20

Quiet Restaurant Quiet Office Museum Average School Average Residence Motion Picture Theater Library Reading Rooms Auditoriums Average Whisper at 5 Ft. Very Quiet Residence

Broadcasting Studio Zero of A.I.E.E. Scale 14 Db.

10

10 Zero of Original Scale 8.5 Db.

1

1

Threshold of Audibility

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AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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ROTRON  Regenerative Blowers

EN 404 Application Engineering Basics Industrial Blower Noise Chart* in dBA Model

SE MF RDC SL2 SL4 SL5

Mode Suction

Pressure

60-62 64-65 76-78 69-72 72-78 76-79

60-62 64-65 76-78 69-72 72-78 76-79

Model

101 202M 303M 353M 404M 454M

Mode Suction

Pressure

65-67 67-69 65-67 72-73 73-74 76-77

66-68 68-70 67-69 73-74 74-75 75-76

Model

513 505M 523 555 656 6

* Average at 1 meter, 4 places around the blower Mode Suction

Pressure

80-81 77-78 82-83 80-81 82-83 85-86

80-81 76-77 82-83 80-81 82-83 85-86

Model

707 808 623 S7 858 823

Mode Suction

Pressure

83-85 84-85 81-82 88-89 84-85 82-84

84-86 84-85 81-82 88-89 84-85 82-84

Model

S/P 9 909 1223 S/P 13 14 S/P 15

Mode Suction Pressure

90-91 81-82 84-85 87-88 86-87 91-92

90-91 84-86 84-85 90-91 86-87 91-92

dBA at Distance Conversion Chart To read, use straight edge to connect blower distance and dBA rating. A pivot point A will be developed. Use straight edge again with new distance and pivot point A to read dBA at new distance.

Rev. 2/04 AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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ROTRON  Regenerative Blowers

Standard Regenerative Blower Nomenclature Reference This chart explains the nomenclature behind the catalogued blower model names. This tool can be used to explain to customers what the letters and numbers mean, and will also allow you to become familiar with our model names. This information should not affect the way orders are placed; please continue to use the model names shown in the catalog and price pages. Any special request should be noted on the order.

Special Features, 0 to 4 letters - see figure 2 Voltage Code, up to 3 numbers - see figure 1 Motor Description - see figure 3 (TEFC, XP, Chem, and ODP) Describes which family the unit belongs to, 1 to 3 numbers Option, for duplex units only P = Parallel configuration S = Series configuration DR EN CP HiE

= = = =

Domestic Regenerative Environmental Chemical Process Hi Efficiency Motor

Figure 1 Voltage Code 5 9 33 58 60 72 75 86 89 91 92 201

230 VAC 60 Hz, Single Phase 115/230 VAC 50/60 Hz, Single Phase 230 VAC 60 Hz, Three Phase 115/230 VAC 60 Hz Single Phase 200 VAC 50/60 Hz Single Phase 230/460 VAC 60 Hz Three Phase 380 VAC 50 Hz Three Phase 575 VAC 60 Hz Three Phase 200-230/460 VAC 60 Hz, Three Phase 230/460 VAC 50/60 Hz, Three Phase 415 VAC 50 Hz, Three Phase 380 VAC 60 Hz

Figure 2 Special Features A B C D E F G H J K L M P Q R S T U V W X Y Z AA BB RD

SPECIAL (not covered by any other letter) Blower on pressure only Blower on suction only

Vapor recovery service - hydrocarbon Nasty Gas face seal Lo leak option (lip seal) Die Cast or muffler extension

Chem-Tough™ construction Special manifold

Valve Rail mounted blower Base mounted blower Slip on flange Package blower coupling drive Package blower belt drive, simplex Package blower drive belt, duplex Remote drive

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AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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ROTRON  Regenerative Blowers

Standard Regenerative Blower Nomenclature Reference Figure 3 Motor Description

D E F K M R V W X Y AD AE AG AK AL AR AS AW AX AY BA BB BC BD BE BG BH BK BL BM BP BQ BR BX CB CC CD

HP

Motor Type

Thermal Protection

5.0 5.0 5.0 3.0 3.0 1.5 1.5 1.5 7.5 1/3 1/3 1/2 1/2 1/2 1.0 1.0 2.0 2.0 2.0 7.5 7.5 10 10 10 15 15 20 20 15 20 30 40 3/4 1/4 1/4 1/4 2.5

TEFC ODP XP TEFC XP TEFC ODP XP ODP TEFC XP TEFC XP XP TEFC XP TEFC ODP XP TEFC XP TEFC ODP XP TEFC XP TEFC XP ODP ODP ODP ODP TEFC TEFC ODP XP TEFC

No No Yes No Yes No Yes Yes No No Yes No No Yes No Yes No Yes Yes No Yes No No Yes No Yes No Yes No No No No No No Yes Yes No

HP

CJ CK CR CS CT CU DC DJ DW DX EE EZ FA FB FD FE FF FG FH FJ FK FL FM FN FQ FR FS FU FW FX FY FZ GA GB GC GD RD

Motor Type

Thermal Protection

2.5 XP Yes 4.0 TEFC No 4.0 CHEM TEFC No 3.0 CHEM TEFC No 2.0 CHEM TEFC No 1.0 CHEM TEFC No 1/8 TEFC Yes 1/16 TEFC Yes 30 TEFC No 30 XP Yes 60 ODP No 1.5 CHEM TEFC No 1/2 CHEM TEFC No 1/4 CHEM TEFC No 3/4 CHEM TEFC No 2.5 CHEM TEFC No 5 CHEM TEFC No 7.5 CHEM TEFC No 10 CHEM TEFC No 15 CHEM TEFC No 30 CHEM TEFC No 5.5 XP Yes 1/4 CHEM XP Yes 1/2 CHEM XP Yes 1.0 CHEM XP Yes 1.5 CHEM XP Yes 2.0 CHEM XP Yes 3.0 CHEM XP Yes 5.0 CHEM XP Yes 5.5 CHEM XP Yes 7.5 CHEM XP Yes 10 CHEM XP Yes 15 CHEM XP Yes 20 CHEM XP Yes 30 CHEM XP Yes 20 CHEM TEFC No REMOTE DRIVE - NO MOTOR

Rev. 2/04 AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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ROTRON  Regenerative Blowers

Corrosion-Resistant and Sanitary Blowers Application Data Sheet To obtain Application Engineering assistance or a quotation for your specific need, please photocopy this form, fill out as much as possible, and fax it back to Rotron. We look forward to working with you. GAS CONCENTRATION / DESCRIPTION Percentage

Gas

Specific Gravity

COMPANY

________ % _______________ (SG = _______ )

CONTACT

________ % _______________ (SG = _______ )

ADDRESS

________ % _______________ (SG = _______ )

ADDRESS

________ % _______________ (SG = _______ )

CITY

STATE

PHONE

FAX

ZIP

100 % _______________ (SG = _______ ) ________

GAS CLASSIFICATION:

Corrosive

AREA CLASSIFICATION:

Corrosive

■ ■

■ ■

Yes Yes

No

Explosive

No

Explosive

■ ■

Yes Yes

■ ■

No No

PERFORMANCE REQUEST: Fill in and circle choice

SCFM FLOW

° (F / C) INLET TEMPERATURE

PSI (A / G) INLET PRESSURE

° (F / C) AREA AMBIENT TEMPERATURE

PSI (A / G) OUTLET PRESSURE

(Ft / M) SITE ALTITUDE

APPLICATION DESCRIPTION: Attach sketch if necessary

Rev. 2/04

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AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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ROTRON  Regenerative Blowers

Factory Statement Warranty Statements

Hazardous Locations Policy

1. AMETEK Rotron DR, EN and HiE regenerative direct drive blowers are guaranteed for one full year from the date of installation (limited to 18 months from the date of shipment) to the original purchaser only. Should the blower fail, due to workmanship or material defect, we will at our option repair or replace the blower.

AMETEK Rotron will not knowingly specify, design or build any regenerative blower for installation in a hazardous, explosive location without the proper NEMA motor enclosure. AMETEK Rotron does not recognize sealed blowers as a substitute for explosion-proof motors. Sealed units with standard TEFC motors should never be utilized where local, state, and/or federal codes specify the use of explosion-proof equipment.

2. AMETEK Rotron moisture separators, remote drives, packaged units, CP blowers, non-released EO models and special built (EO) products are guaranteed for one full year from date of shipment for workmanship and material defect to the original purchaser only. Should the blower fail, we will evaluate the failure. If failure is determined to be workmanship or material defect related, we will at our option repair or replace the blower. CP and EO units will require MSDS sheets prior to being accepted for return to AMETEK Rotron. 3. Parts Policy – AMETEK Rotron spare parts and accessories are guaranteed for three months from date of shipment for workmanship and material defect to the original purchaser only. If failure is determined to be workmanship or material defect related we will at our option repair or replace the part. Corrective Action – A written report will be provided indicating reason(s) for failure, with suggestions for corrective action. Subsequent customer failures due to abuse, misuse, misapplication or repeat offense will not be covered. AMETEK Rotron will then notify you of your options. Any failed unit that is tampered with by attempting repair or diagnosis will void the warranty, unless authorized by the factory.

AMETEK Rotron has a complete line of sealed, spark resistant regenerative blowers with explosion-proof motors. Division 1 & 2, Class I, Group D; Class II, Groups F & G requirements are met with these standard explosion-proof blowers. Rotron can also supply European Zone 1 requirement blowers. AMETEK Rotron will not knowingly specify, design or build any regenerative blower for installation in a hazardous, corrosive environment without the proper surface treatment and sealing options. AMETEK Rotron has a complete line of Chemical Processing regenerative blowers with Chem-Tough™, stainless steel parts, and seals. AMETEK Rotron offers general application guidance; however, suitability of the particular blower selection is ultimately the responsibility of the purchaser, not the manufacturer of the blower.

High Speed Operation Due to the changing temperatures and gas characteristics associated with high speed operation, AMETEK Rotron requires factory approval to operate our regenerative blower designs above standard 2 pole motor speed of 3600 RPM. AMETEK Rotron will not knowingly specify, design or build any regenerative blower for installation where high speed operation may exceed published operating parameters.

Terms and Conditions – Our warranty covers repairs or replacement of regenerative blowers only, and will not cover labor for installation, outbound and inbound shipping costs, accessories or other items not considered integral blower parts. Charges may be incurred on products returned for reasons other than failures covered by their appropriate warranty. Out-of-warranty product and in-warranty product returned for failures determined to be caused by abuse, misuse, or repeat offense will be subject to an evaluation charge. Maximum liability will in no case exceed the value of the product purchased. Damage resulting from mishandling during shipment is not covered by this warranty. It is the responsibility of the purchaser to file claims with the carrier. Other terms and conditions of sale are stated on the back of the order acknowledgement.

Rev. 2/04 AMETEK Technical and Industrial Products, Kent, OH 44240 • e mail: [email protected] • internet: www.ametektmd.com

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