Dwyer M100.5 Durablock Air Volume Gage Instruction Manual
- June 16, 2024
- Dwyer
Table of Contents
Dwyer M100.5 Durablock Air Volume Gage
Instruction Manual
Specifications – Installation and Operating Instructions
TO TEST FOR AIR FLOW VOLUME WHEN INSTALLING AND SERVICING RESIDENTIAL AND
SMALL CENTRAL AIR CONDITIONING SYSTEMS
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.
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).
Small and portable …
To determine cooling capacity of air conditioning systems, the American
Society of Refrigeration Engineers requires that air volume be established by
measuring static pressure differential across a calibrated test orifice with
an elliptic curve approach.
This laboratory test is highly accurate, but impractical for field use because
of the large, cumbersome equipment involved. The Dwyer® Air Volume Gage static
pressure sensors offers a positive solution to this problem. This compact gage
combines laboratory accuracy, field-use versatility and ease of operation.
Saves time, saves work …
Leading cooling equipment manufacturers furnish coil performance data showing
the static pressure differential across each coil along with the equivalent
volume flow and peak cooling point. This data is determined in laboratory hot
rooms with air flow accurately measured by ASRE standard methods.
Recommended static pressure differentials usually run between .10˝ and .20˝
water column (.2482 mbar and .4964 mbar).
Maximum cooling capacity is usually found in the range of 400 c.f.m. (11,326.4
LPM) for each 12,000 b.t.u. of cooling. Using the Dwyer® Air Volume Gage
static pressure sensors, the air conditioning engineer or installer can
accurately measure air pressure differential across a cooling coil. With this
information, the user may determine air volume flow from the manufacturer’s
data, thus bringing laboratory accuracy into the field.
Adjustments in blower speed can then be made to exactly duplicate the
manufacturer’s recommended operating point.
Conditions which would lead to mechanical failure are avoided and peak
performance is assured.
TYPICAL HI-BOY FURNACE WITH COOLING COIL IN PLENUM
MAGNECLIPS
This valuable accessory, furnished as standard equipment with each Dwyer® portable air volume gage, allows rapid positioning of the gage on any vertical iron or steel surface. Just touch the Magneclip-equipped gage to the side of the duct, plenum or other convenient surface. It grips instantly and securely, freeing hands for other work
Specifications
- Product Name: Air Flow Volume Test Kit
- Model Number: FR# 31-440246-00 Rev. 7
- Manufacturer: Test Equipment Depot
- Contact Information: 800.517.8431, TestEquipmentDepot.com
FAQ
Q: Can this product be used for commercial air conditioning systems?
A: This product is primarily designed for residential and small central air conditioning systems. For commercial systems, it is recommended to consult the manufacturer or a professional HVAC technician.
Q: How often should I calibrate the product?
A: It is recommended to calibrate the product before each use to ensure accurate measurements.
Q: Are replacement TrailTails and static lines available?
A: Yes, replacement TrailTails and static lines can be purchased separately from the manufacturer or authorized distributors.
Q: Can I use this product to measure pressure drop in water systems?
A: No, this product is specifically designed for measuring pressure drop in air systems and may not provide accurate readings for water systems.
©Copyright 2013 Dwyer Instruments, Inc.
Documents / Resources
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Dwyer M100.5 Durablock Air Volume
Gage
[pdf] Instruction Manual
M100.5 Durablock Air Volume Gage, M100.5, Durablock Air Volume Gage, Air
Volume Gage, Volume Gage, Gage
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References
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