伸缩式不锈钢皮托管 166T Dwyer德威尔
型号：166T
能够快速容易地伸入任何11.5到36英寸直径 (29.2 to 91.4 cm)的风管进行测量。这个小巧的皮托管可以代替5款固定式的皮托管
The Model 166T Telescoping Pitot Tube is a convenient
adjustable length instrument for sensing air flow in a wide range
of duct sizes, extending your reach to 36 inches (91 cm). It is
ideal for almost any air velocity measurement where permanent
mounting is not required. Because of the very small sensing
holes on the tip, flow must be reasonably clean and free from
particulates which could cause blockage.
The Model 166T consists of a standard 1/8˝ diameter Pilot tube
attached to a four-section stainless steel telescoping tube and a
comfortable hand grip designed for ease in maintaining proper
orientation. This device can be used at any length from 1115/32˝
to 407/16˝ (30 to 103 cm). A 3/8˝ (9.5 mm) diameter hole is
required for full insertion. For maximum accuracy, the 1/8˝ diameter
tip should be always be extended to its full 3˝ length regardless
of how far the telescopic sections are extended
While extending the tip, twist it slowly back and forth until you feel
it engage with the end of the first telescoping section. Next,
extend the Model 166T to the required length and rotate the tele-
scoping sections to align the tip so it points in the same direction
as the finger grips on the handle. See drawings. Now when unit
is inserted in the duct, you can refer to the handle orientation as
a guide to assuring the tip is pointing into the airstream as
required for best accuracy. When extending or collapsing the telescopic tube, be sure the
flexible rubber tubing moves freely through the opening in the
end of the handle. The pressure connections on the terminal
block are marked "S" for static pressure and "T" for total pressure.
Connect the static pressure to the minus (-) or low pressure
port on the manometer or gage and the total pressure to the
positive (+) or high pressure port. See Dwyer Instruments, Inc.
full line catalog for complete air flow measuring instructions, formulas
and flow curves.
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