What is the accuracy of ProScale
measuring devices?
The accuracy of the core product
(scale and encoder) is:
± (.001 + .00025 x L / 17)inch; max error ± .008 up to 20 feet
(L = length of measurement in inches)
This accuracy is at 20ºC (68ºF). ProScale has a thermal
coefficient of 25ppm/ºC.
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What materials can ProScale be
used to measure?
ProScale can be used to measure any simple or
complex materials or products where liquid will not contact the scale (in most cases,
installing the scale upside down solves this problem).
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Why is ProScale better than shaft
encoders?
When mounted properly, ProScale
only changes its reading when the machine actually moves, instead of when
the shaft begins to move. This removes any error due to
"slop" in shafts.
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Why is ProScale better than optical measuring systems?
Unlike optical measurement systems,
the accuracy of capacitive and inductive measuring systems are not affected by sawdust or
other non-conductive contaminants. Additionally, power consumption
is much less than optical measurement systems, which enables ProScale to
operate on standard batteries for many months (and makes installation
much easier).
Also, ProScale is a solid-state electronic device, so
there's very little to wear out. The encoder and scale are designed
to withstand shop dirt, dust, and other airborne contaminants, and the
controls are sealed with a protective cover for long life.
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Why is ProScale better than magnetic measuring systems?
Unlike magnetic measurement systems there is never a gap to set or worry
about. the ProScale system uses a 'captive' encoder to always
maintain proper distance between the encoder and the scale.
Additionally, the accuracy of capacitive or inductive measuring systems
are not affected by magnetic fields caused by high
voltage motors and wiring. Additionally, power consumption is much less than
magnetic measurement systems, allowing long term use with standard
battery power (and making installation and maintenance easier).
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Will ProScale lose its
position when turned off or when power is removed?
ProScales products built with
Absolute technology will not lose their position when turned off or
when power is removed. (Models 150 and 250 plus any ProScale products
incorporating these systems)
ProScale products built with
Incremental
technology will not lose their position when turned off, but could
possibly lose their position when power is removed. (Models 180, 280,
380 and 580 plus any ProScale products built using this technology)
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How long can ProScale measure?
Standard ProScales have a maximum measuring range of 0 to 240 inches
in a single length.
The ProScale readout has a maximum display range of +399.99
inches. ProScale can be custom built to measure longer ranges;
contact us with details of your
application.
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What is the power source for ProScale measuring devices?
Most ProScale measuring
devices are powered by two AA alkaline batteries inside the digital
readout.
Some
of our digital
readout models are
powered by 24VDC, or AC power (with a transformer).
ProStand is
powered with a 90-230VAC outlet.
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Can ProScale communicate with computers? What is
the protocol?
ProScale is compatible with computers using several different
protocols. Our SPC equipped readouts output an industry
standard SPC (Mitutoyo Digimatic™) signal. This
signal can be converted to RS232, RS485, RS422, or an analog signal
using our interface products. Many of our digital readouts have built-in
converters as well. Data may also be transmitted wirelessly using
Pro-RF
SPC or Encoder transmitters and receivers.
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What is the maximum speed that a ProScale
encoder can be moved?
This depends on which product that ProScale is used to build, and
the configuration of the display and/or input device.
Generally, products built using
Capacitive
Incremental
ProScale technology have a slew rate of 24 inches per second.
(DigiFence, and older M100, M200, and Pro/Digi Stop products)
Products built using Capacitive
Absolute ProScale technology have a slew rate of 16 inches per
second.
(M150, M250)
Products built using Hi-Speed Capacitive
Absolute technology
have a slew rate of 30 inches per second. (ProTable)
Products built using Inductive
Incremental
ProScale technology have a slew rate of 60inches per second.
(M180, M280, M580, ProPanels, ProStops)
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Can ProScale measuring devices be used
outdoors?
ProScales were designed
to be used indoors where the temperature is between 0 - 51ºC (32 -
120ºF). Our liquid crystal displays will not operate properly
outside these temperatures. Our LED display (requires 24VDC
power) will
operate in colder temperatures. ProScale does not operate in wet environments.
Consideration should also be given to the effects on accuracy - for any
device - at extreme
temperatures.
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How do I retrofit my product with ProScale measuring
devices?
It's possible to
retrofit almost any product with ProScale. ProScale operates on a
simple principle: one part of a product moves, and other part is
stationary. Simply match the stationary and moving parts of your
product
to the stationary and moving parts of a ProScale, and an installation can be
completed. We make several
engineered retrofit
kits for popular woodworking machinery. General purpose ProScales
(Model 150 and
Model 250) can be used for almost
all other installations.
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Do you sell SPC (Statistical Process
Control) software?
No.
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Can I shorten a scale that I already have?
Any scale we manufacture can be shortened without causing the system to fail.
If you have an absolute style scale,
follow the instructions here.
If you have an incremental style scale, the scale may be cut anywhere.
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Is NIST calibration available?
We
manufacture and test all of our measuring devices using NIST traceable
components. A calibration chart can be made (using NIST traceable
gage bars) for an additional charge of $125.00. This service is
available anytime (shipping charges to and from Accurate Technology may
apply).
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What trade shows will you be
exhibiting at?
View our trade show calendar.
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Last
Revised:
April 08, 2009. |
