Omega Engineering Inc., Stamford, Conn.
SV-2000 series
"black mushroom" pneumatic-angle seat valves have been designed for use in
on/off fluid-control applications where an actuated ball valve might normally
be used. The valves provide double the average cycle life of ball valves
and are less expensive. They feature a rotatable actuator for selective
positioning of the pneumatic-pilot inlet port. They include a visual position
indicator, an articulated seat holder for positive scaling, and spring-loaded
double PTFE seals that separate and isolate the process fluid. Sizes range
from 1/2 to 2 in. NPT. accelero-
meters
PCB Piezotronics Inc., Depew, N.Y.
The HT series
of ICP sensors incorporate a quartz or ceramic shear sensing element in a
hermetically sealed stainless-steel industrial housing with internal electronics
able to withstand temperatures to 325degF. Features include dual-case design,
electric case isolation, wide frequency range, and 100 mV/g sensitivity.
The accelerometers are available with two-pin, military-style connectors
in a top-exit or ring-style, low-profile, side-exit design. controllers
Newport Electronics Inc., Santa Ana, Calif.
Each Infinity C controller, except the strain-gage unit, can be configured
as a proportional controller. Excitation for transducers or transmitters
is provided on every unit. Digital front-panel and/or remote tare function
is included on the process and strain-gage units. A hardware lockout is included
to prevent unauthorized changes in setup. Dedicated meters are available
for process, strain gage, thermocouple, RTD, thermistor, differential
temperature, and pH.
Mesa Systems Co., Framingham, Mass.
The remote digital transmitter interface
module (DTIM) measures analog sensor signals and converts them to engineering
units for direct computer interfaces via the standard I/O port of any personal
computer. Up to 127 remote DTIM modules can be sampled from a master PC at
a sampling rate of 180 Hz. The 16-bit processor supplies a low signal-to-noise
ratio. Dwyer Instruments Inc., Michigan City, Ind.
Series PF air-velocity transmitters combine
=/- 1 percent full-scale accuracy with 0.2-s response time. Units are offered
in three ranges: 0 to 2,000, 0 to 4,000, and 0 to 6,000 standard ft/min,
all powered by 15- to 18-V dc and producing a 4- to 20-mA output signal,
linearly proportional to gas-mass velocity. Ambient operating temperature
limits are 0deg to 50degC; gas temperatures range from 140deg to 121degC.
Plast-O-Matic Valves Inc., Cedar Grove, N.J.
Molded thermoplastic vacuum breakers have
been designed to protect enclosed tanks from collapse or structural damage
during draining or pumping and to prevent unwanted siphoning in a system.
The diaphragm of series VBM valves permits them to be mounted in any position,
although for tank applications mounting is recommended at the top of the
tank. The valves begin operating whenever a vacuum of at least 2 in. mercury
is present. At 20 in. of mercury, they will allow a rate of 80 ft3 of air
per second. The breakers are available in sizes 1/2, 3/4, and 1 in. NPT.
Netzsch Inc., Exton, Pa.
NEMO NESP series progressing cavity pumps
mix, blend, and transport dewatered sludge. They have been designed to eliminate
conveyor mess and odors while reducing installation and maintenance costs.
The pumps include open-throat suction housing, breaking/mixing paddles, feeding
auger, and pumping elements. The breaking/mixing paddles prevent bridging
of materials. The auger force-feeds material from the throat of the pump
into the rotor and stator. Kollmorgen Motion Technologies Group, Radford, Va.
The Platinum XT series is a three-phase
brushless dc servomotor that uses an armature technology. The slotless, ironless
design is made to eliminate preferred-pole position and cogging. The armature's
winding produces a pure sinusoidal-back EMF waveform. The series is available
in three frame sizes: 9, 12, and 16 cm. Continuous output torque range is
from 85 to 390 oz-in. Revere Transducers, Tustin, Calif.
Corners weighing assemblies enable load
cells to be adapted to weigh the contents of tanks or hoppers. The assemblies
combine load cells and mounting systems as a single unit. Capacities range
from 50 to 300,000 lb. The assemblies include zinc-plated or stainless-steel
mounting assemblies. Hermetically sealed load-cell models are available for
operations in harsh environments. Compression-overload rating is 150 percent;
side-load ratings are 40 to 100 percent. Clark-Reliance Corp., Strongs-ville, Ohio
The Lumenator uses a woven fiber-optic
strip for a smooth, even light without bright spots. The illuminator uses
a 5-V ac, gas-filled lamp that has a standard life of 15,000 hours. The light
source is contained within a NEMA 4, 4X, and 7 anodized-aluminum housing.
Harting Elektronik Inc. of North America, Hoffman Estates, Ill.
The Han-Sensor Island has been designed
as a method to interface sensors with programmable logic controllers. It
uses standard Han hoods, housings, and insets as a sensor-actuator box that
can handle from 4 to 16 standard industrial ac and dc sensor connectors.
LEM U.S.A. Inc., Milwaukee, Wis.
The CV series measures voltages from 0
to 3300 V with an overall accuracy of =/- 0.5 percent when operated in a
temperature range of 125deg to 70degC. Bandwidth of 0 to 700 kHz is offered
as well as common mode rejection. Response time is approximately 0.4 µs;
dv/dt following capability is rated at a minimum of 160 V/µs. Indicon Inc., Brookfield, Conn.
Normally closed, Tridak model 826 uses
an inert disposable-tubing system that is compatible with most materials.
It incorporates an adjustable flow control and a suck-back feature. The valve
is actuated with a single three-way air solenoid. An over-pinch adjustment
allows more than 1 million cycles on a single piece of tubing. Inside tubing
diameters are up to 1/8. thermometers
Exergen Corp., Watertown, Mass.
Richco Plastic Co., Chicago, Ill.
A line of metal clamps and clips includes
more than 100 products in CRS, stainless steel, galvanized steel, spring
steel, aluminum, and spring brass. Menasha Corp., Fort Wayne, Ind.
McNab Inc., Mount Vernon, N.Y.
Model HSB is a sanitary turbidimeter suitable
for quality-control applications involving ultra-pure water, food, and beverages.
It is a true nephelometric instrument, measuring the density of particles
in a process stream by the amount of light scattered at 90 degrees to a
collimated beam of light. Typical ranges are from as low as 0 to 2 to as
high as 0 to 200 (NTU) calibrated in NTU, ASBC, EBC, RT units, or parts per
million. regulator gauges
Dresser Industries Inc., Stratford, Conn.
Ashcroft low-pressure, compressed-gas-regulator gauges have 2-in. dial faces with ABS enclosures and pressure ranges from 30 to 300 psi. UL 252 listing for low-pressure ranges (30 to 300 psi) and UL 404 listing for high-pressure ranges (1,000 to 4,000 psi) are suitable for beverage- service needs.
Sensotec Inc., Columbus, Ohio
The 0.688-in.-diameter design of Model GWM makes it suitable for down-hole
applications. The transmitter has been designed for ground-water, waste-water,
reservoir, undersea, and top-accessible tank-level applications. GWM delivers
0.1-percent accuracy (BFSL) over gauge pressure ranges from 7 to 70 bar.
Xomox Special Products Group, Cincinnati, Ohio
The Tufline butterfly valve is available
in full- and semi-cryogenic models. The cryogenic seat is a combination of
stainless steel and Kel-F. An axially pliant, pressure-assisted seat is included
for tight shutoff and long service life. There are no springs to break, no
O-rings to swell, and no hoops to erode. AAF International, Louisville, Ky.
A pulse-jet, fabric-dust collector, the
Millenium, has been developed to meet the needs of engineers and metalworking
personnel in foundries and automotive- and industrial-equipment industries.
Two module sizes are available: one contains 96 bags, the other 144 bags.
Each module is available in four heights and can accommodate fabric- bag
lengths of 8, 10, 12, or 14 ft long as well as pleated bags. motion system
NB Corp., Elk Grove Village, Ill.
An integrated package of linear- motion
bushings and components consists of slide bushings, housings, slide shafts,
and a range of support units. The slide products are available in metric,
inch, and Japanese standard dimensions. 
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