|
|
Scuba Instruments has
developed a PC based flow
test stand that records and
documents regulator
performance. The test stand
utilizes the same basic
instrumentation
configuration as flow
analyzers supplied by others
in the industry. 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
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
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. |
 |
 |
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 user may
also 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 Excel
graphics format for easy diagnostic
and performance evaluation as shown.
Data Log Procedure
A data log cycle is
initiated from the main
display panel by selecting
the “Start Data Log
Measurement” control
button; the operator
manually increases the
flowrate gradually to the
maximum test flow of
typically 25 CFM over a
predetermined (approx. 30
seconds) interval. The
first data log cycle records
500 points for all four
parameters (flowrate, H.P.,
I.P. Vacuum) at a high
tank pressure setting. When
500 points of data is
captured, the log cycle
stops, the “Data Log
Complete” indicator
illuminates Red. The
operator then initiates the
second data log cycle with
the same procedure except
with a low tank pressure
setting. The second data log
cycle also captures 500
points of data. The two
series of data streams are
recorded for simulated
High/Low tank pressures and
are juxtaposed in the Excel
graphic charts for easy
comparison. 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 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, 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 |
|
 |
|
A.I.R. Flow Test Stand |
|
SI-10200100
$3000.00 |
|
|
Back to Top |
|
©
2009 Jet Technologies, Inc. -
Terms and Conditions -
Web Design by
Compu-Eze
|
