Dwyer 100 AV - Manual

Parts list. Contact factory for ordering information.
1. Remove gage from case. Set up in a vertical position using (a) the
gage stand and leveling screw on a horizontal surface or (b)
Magneclips, on a vertical steel surface.
2. Turn connectors counter-clockwise 1/2 to 3/4 turns, thus venting gage
to atmosphere.
3. Center bubble between cross hairs on spirit level with leveling screw or
by shifting gage position.
4. Slide scale to zero mark lies directly behind fluid meniscus, as shown
below.
Align fluid meniscus and the reflected image to eliminate parallax error.
5. Add or remove fluid as necessary.
6. Use left hand gage connection for plus (above atmospheric) pressures.
Connect to right side for minus (below atmospheric) pressures.
Connect to both sides for differential pressures, as with a Pitot tube.
CAUTION:
Use only Dwyer gage fluid. Clean with mild soap and water only. Other
fluids, solvents 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.
(-1) Gage Body
(-2) Molded Nylon Connector –
Rapid shut off type.
(-3) Leveling Screw
(-4) Scale Screw and Washer
(-5) Gage Stand, Washer and
Screw
(-6) Scale
(-7) Rubber tubing, 3/16˝ I.D.,
9 ft
(-8) Terminal Tube and Holder
(-9) 1 oz. bottle red gage fluid
(not shown)
(-10) Magneclips, Magnetic Gage
Mounting Clips (not shown)
(-11) Carrying Case (not shown)
Inclined and Vertical Portable Manometers
Operating Instructions and Parts List
Bulletin D-2
DWYER INSTRUMENTS INC.
MICHIGAN CITY, IN 46360 U.S.A.