Dwyer 100 - Manual

For field or laboratory use ...
The Dwyer
® Air Volume Gage is a precision-built instrument for
air conditioning and heating engineers that has proven to be
extremely useful both in the field and in the laboratory. Portable
and highly accurate, this instrument fills the need for an
instrument to accurately determine the volume of air flowing
through air conditioning coils. An indispensable aid in proving
out cooling system installations, the Dwyer
® Air Volume Gage
helps to avoid poor performance and mechanical failure. It
shows the installer or engineer exactly when more or less air is
needed to keep within the critical limits necessary for the most
efficient and trouble-free cooling system operation.
Accurate, simple to use ...
Field methods for determining air flow volume in air conditioning
equipment have traditionally been rough and inaccurate.
Anemometers and other types of air speed indicators are
inadequate for volume measurements because of both velocity
variations at each register and extreme turbulence throughout
the system. Nor do mathematical computations accurately
indicate effective free area for air flow in the system. In contrast,
the Dwyer
® Air Volume Gage measures the static pressure drop
across cooling coils and offers a highly practical way of
determining flow volume.
INSTALLATION ...
Simply level, adjust for zero, attach static lines and insert Trail-
Tails in test holes. Pressure drop is then read in inches of water
column. The reading can be quickly converted to volume flow by
referring to the manufacturer’s pressure and flow curves
furnished with the cooling unit.
Durablock
®
Air Volume Gage
Bulletin H-30
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
FEATURES
• ALSO USEFUL
For ventilating, heating, refrigeration and air filter systems:
indicates air volume flow, furnace draft, filter condition,
plenum pressure, etc.
• READY TO USE
Simple to assemble, hook up, and take readings.
• PERMANENTLY ACCURATE
No delicate parts to get out of order, no moving parts of any
kind, accuracy remains constant.
• DURABLOCK
Construction of solid transparent plastic, virtually
indestructible and permanently accurate.
• COMPACT GAGE DIMENSIONS
6-3/8˝ x 3˝ x 1˝ (16.19 cm x 7.62 cm x 2.54 cm).
TO TEST FOR AIR FLOW VOLUME WHEN INSTALLING AND SERVICING
RESIDENTIAL AND SMALL CENTRAL AIR CONDITIONING SYSTEMS
Specifications - Installation and Operating Instructions