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Scuba Instruments has
developed a PC based flow
test stand that records and
documents regulator
performance. Scuba
Instruments' A.I.R. Flow
Test Stand is designed to
test diving regulators under
both static and dynamic
conditions. In addition to
the standard “static tests”
for cracking effort and
intermediate pressure, the
“dynamic performance” of the |
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complete regulator (first
and second stage) can be automatically monitored,
recorded and logged to files
while the regulator is
supplying air at varying
flow rates. These dynamic
tests are important on
modern regulators that
utilize venturi assists as
part of the overall work of
breathing. The following outlines
the tests that can be
performed with the A.I.R.
Flow Test Stand:
- Precision Cracking Effort
- Static & Dynamic IP Levels
- Demand Effort vs Flow
- Venturi Performance
- Analyze Second Stage Leaks
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Scuba Instruments has
developed this test stand to
make the technicians job of
testing, evaluating, and
documenting regulator
performance easier by
utilizing the latest in
measurement and data
acquisition technologies.
All data from the sensors in
the test stand are processed
and sent via USB interface
to a PC running the test
program. This information is
displayed along with
measurement data control
functions in an intuitive
familiar instrument layout
as shown.
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The main display provides
analog representations of
gauges as well as digital
values. Analog gauge
response times are fast and
are comparable to the
mechanical gauges used in
conventional instruments.
The accuracy of the pressure
measurements are typically
±0.25% FS at standard
conditions and the flowrate
measurement accuracy is
typically ±1.0% FS at
standard conditions. Analog
to digital conversions are
resolved to10 bits (0.1%).
The analog representations
of the gauges are augmented
with digital counterparts to
allow increased measurement
resolution.
Two modes of
measurements are provided;
free-run testing or data
logging. The free-run
testing mode allows the
technician to perform
testing of the first and
second stages of the
regulator while making
adjustments. The data
logging mode allows the
technician to perform
diagnostic testing prior to
regulator maintenance for
evaluation and final testing
to verify regulator
performance after
maintenance. All data values
for Flowrate, H.P., I.P. and
Vacuum are written to an
Excel spread sheet during a
data log cycle. Two data log
cycles are provided, one for
tests emulated at high tank
pressure and one for low
tank pressure. The high and
low tank pressures can be
simulated through an
optional H.P. manager
connected to a high pressure
source or SCUBA tank. The
flowrate is controlled by
the operator through a
manual air control valve
located on the test stand.
The test stand requires a
low pressure (100-150 psi)
air supply. This low
pressure can be generated by
a low pressure port on a
diving regulator, a pressure
reducing regulator, or a
standard low pressure air
compressor.
The user may customize the
spreadsheet -except for the
areas data is written- to
show other information
related to the testing such
as regulator model/serial
numbers, tech notes, etc.
The data values are
displayed in Excels graphics
format for easy diagnostic
and performance evaluation
as shown.
  
(click to enlarge) |
A Second Stage Leak Analyzer
has been added to further
enhance the functionality of
the A.I.R. Flow Test Stand.
The Leak Analyzer is
designed to measure very
small leaks in the second
stage regulator housing that
may allow water to enter
during the breathing cycle
from holes with equivalent
diameter sizes of .002 inch
to .020 inch.
The information used in
evaluating a leak is
displayed graphically on two
scales on the Leak Analyzer
Window dashboard of the PC
interface. One scale
represents the reference
vacuum source and the other
is the leak magnitude as
shown.
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The A.I.R. Flow Test
Stand includes the following
items:
- Test Stand comprised of :
Venturi Pump, Flow Controls,
Flowmeter, Pressure Transducers,
Dive Regulator interface, High Pressure & Intermediate
Pressure ports, Leak Analyzer Accessories, Data
Acquisition interface.
- A.I.R. Flow Test Software
with drivers.
- USB Interface Cable
- Power Supply Adapter |
Recommended Minimum
System Requirements:
- PC with Windows XP
- One USB Port
- 256 MB RAM and 40 MB free
hard drive space |
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A.I.R. Flow Test Stand |
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SI-10200100
$3300.00 |
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