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Dwyer - Instruments Inc, U.S.A. |
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Air Velocity Meters
Series 400
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 Measure
both pressure and air velocity
Read
the red figures directly in feet per minute of velocity - from 400
to 10,000 f.p.m. No conversion tables needed for air at standard
conditions. Read the black figures in inches of water column air
pressure - from 0 to 10" w.c.
Our most popular precision air velocity instrument, the No. 400
is used to balance air conditioning systems, measure pressure drop
across filters, and test fan and blower discharge and inlet pressures,
as well as air velocity in ducts. It offers the convenience of a
dual purpose instrument - plus high accuracy on easy-to-read scales.
A versatile, all around manometer for the air conditioning and balancing
contractor or industrial plant.
Kit includes No. 400 Air Meter and all accessories:
Combination Inclined/Vertical Manometer - 3 models (see table).
Dwyer Durablock® precision machined solid acrylic plastic construction.
Virtually indestructible. Has both inclined section for high accuracy
and vertical section for extended range. Pressure marked in black,
Velocity in red figures. Easy to read - no reference tables needed.
Has screw leveling adjustment and ground glass bubble level.
Series
400 Air Velocity Meters with Combination Inclined/Vertical Scales
Rated for total pressures to 100 psig (6.89 bar); temperatures
to 150°F (65°C)
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Model
Number
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Range
in. w.c.
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Velocity
FPM
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Minor
Div.; Range, in. w.c.
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Pitot
Tube
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Inclined
Scale
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Vertical
Scale
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400-5-S
400-5-L
400-5-gage
400-10
400-10-gage
400-23
400-23-gage
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0-5
0-5
0-5
0-10
0-10
0-23
0-23
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400-9000
400-9000
400-9000
400-12,600
400-12,600
400-19,200
400-19,200
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.01,
0-1.0
.01, 0-1.0
.01, 0-1.0
.01, 0-1.0
.01, 0-1.0
.02, 0-2.3
.02, 0-2.3
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.10,
1-5
.10, 1-5
.10, 1-5
.10, 1-10
.10, 1-10
.20, 2.3-23
.20, 2.3-23
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8
in.
18 in.
none
18 in.
none
18 in.
none
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ACCESSORIES
Stainless
Steel Calibrated Pitot Tube - (18" Model 160-18 standard, other lengths
available - see price list). Graduated both sides in inches to show
insertion depth for easy accurate duct traverse. Clean, burr-tree
static holes. Suitable for temperatures up to 1500°F.
Rubber Tubing with Connectors - Two coils of 3/16" with metal terminal
tubes.
Magneclip side mountings. Attach meter instantly to steel duct or
surface.
Red Gage Oil - Spare bottle. For occasional refilling. Supply sufficient
for several years of normal use. (Blue Gage Oil furnished with Model
400-23).
Instruction Card - Easy to read and understand. Plastic laminated,
wipes clean.
Dwyer Air Velocity Calculator - Slide rule eliminates tedious calculations
- easily compensates for temperature, humidity and barometric pressure
variations.
Steel Carrying Case - Professional quality. Welded seams, enamel finish.
Hinged top locks with hasps. Foam plastic lined and fitted to protect
meter and accessories. Size* 11 ½ x 20 ¼ x 1 ½". Only 3 ¼ lb.s with
equipment.
*No. 400-5-S is 11 x 11 ½ x 2 ½". Contact factory for extra long steel
cases for use with longer Pitot tubes. |
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Model
No. 400-5 Air Meter,
0-5" W.C., 400-9000 f.p.m. |
Complete
Kit, Model 400-10 |
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