Overview of a Primary Product

Accessories
Part no.
0554 4200
Flow hood 14" x 14" (360 x 360 mm)
0554 4201Flow hood 12" x 48" (305 x 1220 mm)
Measuring range
Pitot Tubes
Dimensions
Probe shaft/probe shaft tip
Part no.
Pitot tube, 20 in. (0.5 m) long,
0.28 in. Dia. (7 mm), stainless steel,
for measuring flow velocity*
Pitot tube, 14 in. (0.35 m) long,
0.28 in. Dia. (7 mm), stainless steel,
for measuring flow velocity*
Pitot tube, 39.4 in. (1.0 m) long,
0.28 in. Dia. (7 mm) stainless steel,
for measuring flow velocity*
0635 2045
0635 2145
0635 2345
20 in. (0.5 m)
14 in. (0.35 m)
39.4 in. (1.0 m)
.28 in. Dia.
(7 mm)
.28 in. Dia.
(7 mm)
.28 in. Dia.
(7 mm)
*Connection hose required (order no. 0554 0440) or (order no. 0554 0453)
testo 420 Flow Hood System
0554 4202
0554 4203
0554 4209
0554 0440
0554 0453
400520 4403
Flow hood 24" x 48" (610 x 1220 mm)
Flow hood 36" x 36" (915 x 915 mm)
Tripod, extendable to 13' (4m)
Connection hose; silicone; length 16.4' (5m); max. load 280 inWC (700 mbar)
Connection hose silicone-free for differential pressure measurement, length 16.4' (5m), max. load 280 inWC (700 mbar)
NIST Flow Hood Certification
Tripod
extendable to 13'
14" x 14" 12" x 48" 24" x 48" 36" x 36"
Measuring range:
200 to 2,750 ft/min
(1 to 14 m/s)
Operating temperature:
32 to 1,112 °F
(0 to 600 °C)
Pitot tube factor: 1.0
Air Flow Matrix Kit
Air flow / velocity matrix, incl. 6ft
telescopic extension pole & ball
swivel head, two 6ft silicon-free
connection hoses and attachment
straps
Order no.
0699 7077/1
Air Flow Matrix Kit w/
testo 420 Multi-function Flow
Instrument
Air flow / velocity matrix, and 420
Multifunction Flow Instrument. incl.
6ft telescopic extension pole with ball
swivel head, 6ft silicon-free connection
hoses, and attachment straps
Order no.
0699 7077/2