- Introducing LTM2214 line of sight single beam laser torque meter
- (15th December 2007)
Advanced Measurement Solutions announces its
most recent
LTM2214
line of sight
single beam
laser
(LOS-SBL)
torque metering system available both in
a
desktop/flush
mounting version and in
a
rugged IP55 steel box one.
A
line of sight
single beam laser
(LOS-SBL)
torque meter is essentially composed of three
parts: two
dynamically
balanced
slitted discs which are mounted on the shaft with a known
reciprocal angular displacement, a laser beam emitter, and a laser
beam receiver. The laser beam passes through the slits of the two
discs and is detected by the receiver. As the shaft rotates the beam
is periodically interrupted by the teeth of the siltted discs thus
generating laser pulses which are detected by the receiver. The
variation of pulse lengths compared to the length at zero torque (at
the same angular speed) is proportional to the torque applied to the
shaft.
Line of sight
single
beam laser
(LOS-SBL)
technology,
developed and patented by Advanced Measurement Solutions,
represents a quantum leap in torque measurement as it completely
eliminates errors induced by the difficulty of obtaining an
exact positioning of magnetic pick ups in toothed discs systems,
or
of optical sensors in multiple beam laser systems,
and in fiber optics guided implementations.
With
the
LOS-SBL
technology there is no contact between the
components mounted on the shaft and the rest of the system (e.g. non
slip ring is present), and no electronics is mounted on
the shaft (as in strain gauges systems using radio waves to transmit
data from the electronics mounted on the shaft to the rest of the
system).
Consequently the LTM2214 is not influenced by temperature
variations and centrifugal forces and can be used even at high
speeds.
LTM2214 torque calculation is completely digital, thus
eliminating the drifts and inaccuracies
which are typical of analog systems requiring periodical adjustment.
For these reasons the
LTM2214 surpasses other torque metering
technologies in terms of reliability, repeatability,
accuracy and
resolution. These characteristics allow it to be used as
a reference instrumentation equipment
(standard accuracy is better than 0.5%,
while reference accuracy can be requested at the order).
LTM2214 includes
a fuel meter input (current or voltage input is
selectable) for real time fuel consumption and specific fuel
consumption calculations. Warnings and alarms can be freely assigned
by the user on all measured data (relay and serial output
are
available). All these features permit to use
LTM2214 to optimize
maintenance costs
(maintenance needs to be carried
out
when
the preset alarm threshold is exceeded) or
to be used
as a system performance
monitor (to reduce fuel consumption or increase speed), to
reduce CO2, SOx and NOx emissions, and to reduce shaftline stresses.
Seven parameters are calculated in real time by the 32
bits digital
system (RPM, torque, power, instant fuel consumption, specific fuel
consumption, energy, total revolutions).
Using several LTM2214 it is possible to monitor several shaftlines
at the same time.
The
LTM2214
system provides vibrotorsional analysis in time and
frequency domains, using the software tools available from Advanced
Measurement Solutions (the
time domain
and the demo version of the frequency domain one are
included in the standard supply and
are freely
downloadable from
our web site).
The frequency
domain
tool license
is available at a reasonable extra cost and sent via email.
The
LTM2214 system also includes a Windows (Win32) remote control
utility for PC (freely downloadable from
our
web site).
The
LTM2214
has two communication ports: an RS232 for short distances (up to
15-20m) and an RS422 for longer ones. NMEA0183 (shipborne electronics
standard) plus custom protocols are available.
The LTM2214 can be used
as a stand alone system; can be integrated in a machinery automation
system; or used as a remote diagnostic system controlled via a
satellite link (e.g. in shipborne installations).
Data storage on an
SD card is also included (for data logging, black
box, or vibrotorsional analysis). SD data logging can exceed months.
SD Card data can be download remotely
via a serial link.
As the LTM2214 uses FAT32 SD Card formatting, SD cards can
be read by any PC running on Windows operating system (XP,
Vista, etc..).
A full range of accessories
and spare parts
is
also
available.
The single
beam laser torque metering technology
used by LTM2214
is patented by Advanced
Measurement Solutions.
Please visit our web site for more detailed information on all our
products at:
www.AdvancedMeasurementSolutions.com or contact us at
info@AdvancedMeasurementSolutions.com
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