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RELIABILITY
WIRE
Volume I, Issue #4 - October 27, 2000
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In
this issue |
- New Product Additions to our On-Line Catalog (Now over 270!)
- Ask the Expert "How can I determine if
my belts on my belt driven machine are correctly matched while my
machine is still running?"
- Application note:
"Transient Data Analysis"
- Dare to Compare:
RDI vs. CTC and Wilcoxon
- What's Hot?: Scroll
on down and take a look...
- Case History: Cost Effective Fan Monitoring
- Trivia Contest:
See the Bottom of the Page.
To unsubscribe from the newsletter,
follow directions at the bottom of the page.
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| New
Product Additions |
AC Line Power Integrity can not be taken
for granted. AC
Line Monitors by
Pioneer will monitor or troubleshoot line problems by plugging it in
to a suitable AC outlet. Displays include line frequency, line voltage
and wiring integrity.
The Pioneer
PK1 Pocket Strobe is the world's smallest
Industrial Stroboscope. It conveniently stops motion, measures speed,
and is a bright as a full sized "Pistol Grip" Strobe.
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| Ask
the Expert: Wolf Campbell, P.E. - SKF Services |
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Question: "How
can I determine if my belts on my belt driven machine are correctly
matched while my machine is still running?"
Answer: First, listen to the belt drive. Is it
making unusual noises such as squealing or thumping. Next, use a
manually adjustable strobe
light (like the slick PK1 mentioned above...)
to view the belts while they operate. Tune the strobe light flashing
rate so that it is slightly slower than the belt speed. The belts
should now appear to travel around the sheaves. Now then, assuming you
had the fore thought to make a permanent, contrasting mark across all
of the belts when they were installed you would now see these marks
pass through the strobe light field. If they are all still lined up
everything is fine, no individual belt is slipping. If they are no
longer lined up, one of two things comes to mind: the belts are
mismatched (not the same length) or on the sheave grooves is worn.
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| Application
Note: Transient Analysis |
| Transient analysis is the study of how
various signals change during a machine's process or load change. This
analysis is particularly important during a machine's startup or
shutdown when critical speeds or natural resonance's are encountered.
Observing the overall amplitudes or individual spectra will not be
sufficient to document how the entire machine behaves during transient
conditions. Data collection modes fall into two general categories:
observing transducer output signals with respect to machine speed and
observing transducer output signals with respect to time. Sometimes, a
combination of the two modes may be required. For details and sample
plots depicting Transient Analysis, click on the hyperlink here: Transient
Analysis (Your Browser must be Open...) |
| Dare
to Compare: BNC Switch Boxes |
| BNC
Switch Box - Fiberglass NEMA 4X: |
RDI |
CTC |
Wilcoxon |
| 6 Channel Switch Box |
$299.00 |
$345.00 |
$370.00 |
| 12 Channel Switch Box |
$385.00 |
$450.00 |
$525.00 |
| 24 Channel Switch Box |
$650.00 |
$900.00 |
N/A |
| 32 Channel Switch Box |
$775.00 |
N/A |
$2,825.00* |
| 48 Channel Switch Box |
$1,395.00 |
$1,550.00 |
$3,200.00* |
| * Painted Steel |
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| What's
Hot? |
The Pioneer
PDT-2000 Hand Held Tachometer is a hot seller this
fall! The palm sized unit measures RPM, Surface Speed & Length,
with or without contact. It can also be used to measure the
accumulated total of continuously running material such as paper,or
wire being wound on a spool, or to check the calibration of on-line
counters and totalizers.
'Tis the Season to be Aligning... well it seems like it because our
High quality Stainless
Steel Shims are moving fast! The shims are
dimensionally uniform and electro-etched for permanent easy to read
identification. The shims come in a variety of standard assortments
and each kit is offered in a sturdy metal carrying case with a removal
tool. Shims are also available in any custom assortment to fit your
needs. Call 800-899-2241 for any custom
orders.
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| Reliability
and PdM related Books |
| RDI is now affiliated with Amazon.com to
provide you access to the best Reliability / PdM resource books. Peruse
the book summary and see what other Reliability/Maintenance
professionals thought of the content. Purchase on-line via RDI and
Amazon.com. |
| Special
Offer! |
| All Pioneer Products
will feature an additional 5% discount if you call our
800 number and use Offer Code 2000. Featured Pioneer Products include
their Stroboscope, Tachometer and AC Line Monitors. |
| Case
History: Cost Effective Fan Monitoring |
| An OEM client approached RDI seeking a
cost effective solution to monitoring a large number of Air Blowers for
a Tunnel project. Our solution was to design the CMCP420VT
Loop powered Vibration Transmitter. It provides a 4-20 mA output that is
proportional to overall vibration in terms of velocity. The CMCP420VT
continuously monitors machinery health and transmits directly into a PLC
or DCS for trending, alarm and machine shutdown. In addition, the
CMCP420VT provides access to the buffered transducer output for
interface to a portable vibration data collector/analyzer for detailed
vibration analysis. |
| Trivia
Contest |
|
Many Thanks to all of you who participated in last issues' Trivia
Contest. The first to respond with the correct answer was Adam
Butler of Newmont Mining Company. Adam received a CD of SKF's
Electronic Engineering Handbook" and assorted SKF promotional
items including Coffee Mug, Knife, Clipper,Key Chain and Pens.
Question
#4
In a
machinery vibration application, what 3 parameters make up a Polar
Plot?
To unsubscribe send e-mail to dgallagher@ghg.net
with "Remove" in the subject line. |
| Quality
Products at a Competitive Price and the convenience of secure 0n-line
purchasing!
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Direct Homepage
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