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while they're hot |
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MOSFET
switches
Micrel Inc., San Jose, Calif. |
Both the MIC2545 and MIC2549 fully protected high-side MOSFET switches are
designed for power distribution applications in USB and ACPI designs as well
as in board hot-swap applications. Both models have a 35-milli-ohm switch
that offers full protection to any system or load, and are protected against
short circuits by thermal shutdown; fault reporting is via an open-collector
FLAG output. Under-voltage lockout prevents the switch from turning on until
the input voltage is stabilized above 2.5 V. MIC2549 also includes a
circuit-breaker function; whenever the device enters thermal shutdown, output
is latched off until the controller resets it.
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Planetary
gearheads
Bayside Motion Group, Port Washington, N.Y. |
Stealth Right-Angle Helical Planetary Gearheads
incorporate the company's all- helical Stealth planetary technology into
a compact design. HeliCrown gear tooth design uses tooth crowning, resulting
in less than 70 dB noise. The ring gear is machined into the stainless steel
housing, and internal gears are hardened with the Plasma Nitriding heat-treating
process to provide a 68 Rc surface and ductile core. Gearheads allow input
speeds up to 4,000 rpm and provide 10 minutes backlash with a 5-minute backlash
option and torques up to 2,500 Nm. They are available in sizes from 60 mm
to 300 mm and ratios from 5:1 through 100:1 (the compact design allows the
gearhead size to remain the same, regardless of ratio). Gearheads are sealed
to IP65 for protection in harsh environments.
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Shaker
control system
Dactron Inc., Milpitas, Calif. |
The new 16-channel Dual DSP Shaker Control System
for vibration testing and analysis of large or fragile test articles permits
the use of up to 16 simultaneous inputs to control, limit, and monitor vibration
at many positions on test articles, such as satellites, airframes, military
electronic modules, automobiles, and telecommunications electronics. The
controller can be expanded from 2 to 16 channels in one-channel increments.
Any of the channels can be used for multipoint control, or all may be used
for vibration limiting and structural response analysis. Real-time processing
architecture handles the control loop independently of the PC processor.
Dynamic range is 120 dB for FFT mode analysis of input signals, 95 dB for
closed-loop random control, and 100 dB for closed-loop swept sine control.
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Machine
vision system
Cognex Corp., Natick, Mass. |
Pastelnspect is an integrated machine vision software
and hardware package for inspecting defects that occur during the printed
circuit board (PCB) screen printing process. The software inspects the PCB
pads immediately after printing to determine if too much or too little solder
paste (used to bond the leads of surface mount devices to the PCB) has been
applied, or if it has been deposited in the wrong place. Highly reflective
PCB board and pad surfaces or variations in the texture of the paste as it
dries are said not to affect the system's reliability. Product package consists
of the software, with PCB alignment capability built in, the company's MVS-8100
PCI frame grabber, and a Windows-based graphical user interface.
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Electronic
stethoscope
Omega Engineering, Stamford, Conn. |
The HHT91 Electronic Stethoscope uses electronics to amplify mechanical noises.
The portable, handheld unit includes a 12-in. flexible, detachable probe,
and is powered by a 9-V battery.
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Laser
range finder
Vespo Marketing Associates Inc., Thompson Ridge,
N.Y. |
Riegl U.S.A., Orlando, Fla. A new rugged pulsed-laser
range finder is now available. It is designed especially for noncontact distance
measurement to extremely hot solid, liquid steel, or other metal surfaces.
The LD90-3100 HS/HT finder has a typical absolute measurement accuracy of
±20.3 mm with a resolution of 2.5 mm. Update rates are programmable
and range between 0.5 Hz and 10 Hz. Measuring range varies as a function
of target temperature. For liquid steel with temperatures up to 1,450°C,
maximum range is 7 m. For glowing steel slabs with temperatures up to
1,200°C, maximum range is 10 m. For targets with temperatures below
800°C, maximum range is 100 m.
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| Load
cells Sentech Systems Inc., Mount
Joy, Pa. |
New FN300TCS load cells provide high insensitivity to transverse loads and
moments. They are available in dual bridge configurations for simultaneous
system control and load measurement, and in an industry-standard low-profile
package for load measurement in both compression and in tension with the
optional high-precision base. Load ranges from 1,000 to 225,000 lbf are easily
accommodated with better than ±0.05 percent full-scale nonlinearity
and hysteresis performance at 2.0 mV/V sensitivity.
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Metal
detectors
Cintex of America, Kenosha, Wis. |
This company recently began manufacturing metal-detector
heads in the United States and can now deliver complete
systems—combinations of popular detector sizes with standard conveyor
systemsÑwithin one to three weeks from the order date. Various metal
detector sizes can be combined with a standard conveyor measuring 60 in.
long and 35 in. high. Belts are available in 12-in. or 18-in. widths and
speeds of 60 or 120 ft./min.
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Laser
vibrometer
Ometron Inc., Dulles, Va. |
A rugged version of this company's single-point
laser Doppler vibrometer is now available. The VH300 instrument offers precise
laboratory performance in a rugged, portable format. With a working distance
range of up to 25 m, the instrument can be used to measure most machinery
surfaces without special surface preparation. For flanges and joints difficult
to reach, an optional mini-mirror kit directs the laser beam onto the target
area. Measurement frequency bandwidth is from dc to 25 kHz.
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Dual
port fitting
Parker Hannifin Corp., Fluid Connectors Group,
Cleveland, Ohio. |
A new Prestomatic dual port fitting has a 90-degree
male elbow "F" fitting designed to replace two separate fittings that normally
would have to be connected. The one-piece design eliminates two potential
leak paths and greatly reduces assembly time. The tube ends simplify assembly
by allowing fast connections without tools. The fitting is available in three
sizes to accept tubing from 1/4 in. to 5/8 in.
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Irrigation
meters
Istec Corp., Roselle, N.J. |
A new line of irrigation meters measures
and monitors the flow of irrigation, well water, and even extremely polluted
water. The meter requires no electric power and can be read remotely. A
hermetically sealed flow counter is activated by magnets. The meter can be
installed in a vertical, horizontal, or inclined pipe. Accuracy is ±2
percent, high-pressure rating is 230 psi, and low-pressure loss is 0.5 psi
at continuous flow.
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Needle
valves with filters
Industrial Specialties Mfg. Inc., Englewood,
Colo. |
A new series of needle valves with filters is available,
manufactured of brass. The valves protect the 40-micron sintered bronze filter
elements within the housing. Once set, the needle can be easily locked. The
valves have a 300-psig maximum working pressure and are appropriate for
temperatures from -65°F to +300°F.
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Programmable
logic controller
Hankison International, Can-onsburg, Pa. |
A new programmable logic controller has been added to this company's H Series
line of high-capacity, refrigerated-type compressed air dryers. The new control
system automatically performs start-up and shutdown procedures after user
selection and stages refrigeration compressor unloaders to match the demand
on the system. The controller also monitors all critical operating conditions
and protects the compressor from adverse operating conditions. H Series dryers
are designed to dry air economically in the 2,000- to 20,000-cfm range.
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Rockwell
scale tester
NewAge Industries Inc., Test- ing Instruments
Div., Willow Grove, Pa. |
The Rockman is a full-load portable Rockwell-scale
hardness tester and can be used on almost any test surface where a standard
Rockwell tester would be used. It is not limited to smooth surfaces or clampable
parts and requires access to only a single side of the specimen. The system
incorporates a 4-lb. test head attached by cable to a 2-lb. electronics package.
The operator uses the unique load mechanism in the test head to apply the
load through the diamond or ball indenter swiftly but without impact.
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Air
bearings
Canon U.S.A. Inc., Components Div., Encoder
Products, Lake Success, N.Y.
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The new AB Series high-precision, high-stiffness
air bearings, models AB-36RV and AB-50RV, are said to be ideal for head testing
and media certification applications. High rotation speeds for the AB-36RV
(15,000 rpm) and the AB-50RV (20,000 rpm) ensure precision accuracy and eliminate
any porous graphite seizure concerns. Rotor inertia (gcm2) is 243 for the
AB-36RV and 4,815 for the AB-50RV. Axial loads are 5.0 to 7.0 Kgf (AB-36RV)
and 7.2 to 9.0 Kgf (AB-50RV).
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Combustible
gas monitors
CEA Instruments Inc., Emerson, N.J. |
The Gasurveyor 400 series of intrinsically safe,
durable monitors is available for ppm, percentage LEL, and percentage volume
of combustible gases. Sensors for oxygen, carbon monoxide, and/or hydrogen
sulfide can be added, allowing for up to six different gas ranges in one
confined space entry monitor. Standard features include a built-in air pump,
toughened glass display, auto-backlight, and audiovisual alarms.
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Tube
connectors
Airtronics Inc., Bellevue, Wash. |
A line of TwinTec Inc. tube connectors of 7, 8,
12, and 19 lines are standard line options, with air/electric combinations
also available. Pressure rating is 125 psi. Ports are 10-32 threaded, 0.125-in.
minimum-diameter orifice standard (hose barbs, 1/8 in. NPT, and 1/4 in. NPT
available). Seals are retained Buna-N O-rings.
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Oil
water separators
Areo-Power Unitized Fueler Inc., Smithtown,
N.Y. |
New above- and below-ground oil-water separators
collect and separate multiphase liquids and solids from petroleum and industrial
wastewater, while purifying water for reuse. Flow rates are 55 gpm to 5,000
gpm and discharge rates can be as low as 10 ppm. The separators are available
in single-wall, double-wall, and rectangular construction.
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Low-profile
rotary stage
Anorad Corp., Hauppauge, N.Y.
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A new low-profile rotary stage uses a piezo-ceramic linear motor (PCLM) for
300 mm wafer handling operations. The PLR-300 rotary stage has a height profile
of only 32 mm and is powered by two diagonally opposed PCLMs to provide superior
drive balance and intrinsic smooth operation. Rotation is provided to 360+
degrees with an angular resolution of ±0.0005 degree. Positioning accuracy
is ±2 microns at a 150 mm radial distance from the center of the stage's
axis of rotation.
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Tapered
keyless bushing
Fenner Drives, Manheim, Pa. |
Trantorque QC is a patented tapered keyless bushing
that simplifies the installation and positioning of synchronous belt sprockets
that are bored for QD bushings. Installation consists of backing off the
single locking nut, mechanically disengaging the unit, and repositioning
or timing the sprocket. The new bushing is available in JA, SH, SDS, SD,
SK, and SF series. Bore sizes available range from 1/2 in. to 2 1/4 in.,
depending on the series.
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Vacuum
blower
Stokes Vacuum Inc., Philadelphia, Pa. |
The Model 615HSBP is a higher-speed version of this
company's dry lobe vacuum blower. At 3,600 rpm, the new model produces 2,600
cfm. It also includes an automatic bypass valve to maintain a constant
differential pressure. This enables the blower to start from atmosphere,
providing effective use over the full pressure range. Depending on the pressure
differential, the bypass valve results in a decrease in pumpdown time of
5 percent to more than 50 percent compared to nonbypass blowers with equal
capacity.
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Linear
motion slide
Electro Pneumatic Innovations, Novi, Mich. |
The S Series is a new two-position, twin-cylinder,
internally powered linear motion slide featuring extruded tubular construction
of the saddle for longer strokes and larger shafts for heavier payloads with
less deflection. The series is completely self-contained and self-powered
and is available in standard sizes. Each of the two positions has an adjustable
hardened stop for location repeatability and can be fitted with a self-adjusting
shock absorber to reduce tooling fatigue. Position is achieved with the use
of standard four-way valves.
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