Dwyer 422 Bedienungsanleitung PDF herunterladen

1. Mount gage securely on a vertical surface avoiding excessive heat.

(Temperatures over 150°F (65.6°C) will damage gage). Level gage

approximately by swinging gage about top center mounting screw and locate

bottom bracket screws in center of slots.

2. Turn pressure connectors counter clockwise 1/4 to 1/2 turn, thus venting

gage to atmosphere.

3. Center bubble between guide lines on spirit level by swinging about top

center mounting screw and tighten bottom bracket screws.

4. Turn fluid level adjustment knob to set the meniscus of the fluid column at

zero, as in photo.

Align fluid meniscus and the reflected image to eliminate parallax error.

5. Add or remove fluid as necessary.

6. Use left hand pressure gage connection for positive (+) (above atmospheric)

pressures. Connect to right side pressure connection for negative (-) (below

atmospheric) pressures. Connect to both pressure connections for

differential pressures, as with a Pitot tube.

CAUTION:

Use Dwyer gage fluid only. (See Gage Scale for Proper Specific Gravity). Clean

with mild soap and water only. Other fluids or cleaning agents may damage the

gage.

AIR VELOCITY

The total pressure of an air stream flowing in a duct is the sum of the static or

bursting pressure exerted upon the sidewalls of the duct and the impact or velocity

pressure of the moving air. Through the use of a Pitot tube connected differentially

to a manometer, the velocity pressure alone is indicated and the corresponding air

velocity determined.

Series 421-422 Stationary Gage

perating Instructions

ulletin D-5

DWYER INSTRUMENTS INC.

MICHIGAN CITY, IN 46360 U.S.A.

1 2

DWYER INSTRUMENTS INC 1

Inhaltsverzeichnis

Seite 1 - DWYER INSTRUMENTS INC

1. Mount gage securely on a vertical surface avoiding excessive heat. (Temperatures over 150°F (65.6°C) will damage gage). Level gage approximately by

Seite 2

For accuracy of plus or minus 2% as in laboratory applications, extreme care isrequired and the following precautions should be observed: In making

Verwandte Modelle: 421

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Dwyer 422 Bedienungsanleitung

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Luftausrüstung Dwyer 422 herunter. Dwyer 422 User Manual Benutzerhandbuch

Inhaltsverzeichnis

Verwandte Modelle: 421

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