new products

Sealed cell
ATS Rheosystems, Bordentown, N.J.
The new sealed cell available from ATS RheoSystems/ Reologica Instruments was designed to be application-specific for the measurement of viscoelastic rheological properties of solutions above their boiling point without loss of any volatile components. The patented system allows measurements under pressure with full dynamic oscillation and viscometric capability. The air-bearing seal is effectively frictionless and permits very low torque and dynamic oscillatory testing throughout the frequency range of the rheometer. One of the features of the sealed cell is the ability to test pastes and semisolid materials at elevated pressures and temperatures using a parallel plate measuring system.

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Vacuum hose reel
Nederman Inc., Westland, Mich.
The Series 881 vacuum hose reel provides a practical solution for hose storage. Suitable for use with central or portable high vacuum systems, the new reel complements Nederman's line of industrial vacuum systems. In addition to reducing the risk of tripping from hoses on the floor, the reel reduces wear on the hoses. The ratchet function of the reel locks the hose in desired drawn-out position and comes with an automatic valve and microswitch.

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Transistor sockets
Keystone Electronics Corp., Astoria, N.Y.
Low-profile TO-3 power transistor sockets are designed to aid installation of Jedec TO-3 MPM power transistors, by eliminating the need to use insulated bushings. According to the company, important design elements include a collector strip terminal with 6-20 formed threads at either end of the socket to permit mounting ease; nylon tops to accommodate 0.030-, 0.045-, and 0.090-in. chassis thicknesses; and electroplated, spring brass contacts that accept 0.040- and 0.060-in. pins. Phosphor bronze and beryllium copper contacts are also available.

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Propor- tional pressure control
The Oilgear Co., Milwaukee, Wis.
The company's PVM medium-duty axial piston hydraulic pumps feature proportional pressure control. The new control provides the user with an inexpensive proportional pressure compensating control with a cutoff for limiting maximum pressures. The control is available in either 12 V dc or 24 V dc, normally open or normally closed, and offers an option for an integral connector amplifier. Typical operating parameters are 350 to 3,000 psi proportional pressure control, 600 to 3,250 psi maximum pressure cutoff setting, 100 psi hysteresis in open loop operation, and 5 psi hysteresis is closed loop operation.

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Stainless fasteners
Leland Powell Fasteners Inc., Martin, Tenn.
The company now offers American manufactured stainless steel fasteners. Producing small-diameter (up to 5/8-in.) parts to customer specifications, Leland Powell offers volume runs of stainless machine screws, tapping screws, and patented Lo-Driv thread forming screws. In addition to working in carbon steel, the company now prints in series 300 and 400 stainless steels. These stainless steel fasteners are typically used in corrosive environments and other environmentally demanding applications. Leland-Powell serves the lawn and garden, appliance, furniture distributor, and truck markets, among others.

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R-410 option
Lennox Industries Inc., Dallas, Texas
The L Series packaged rooftop heating/air conditioning units have been enhanced with the environmentally friendlier R-410A (3 to 30 tons). By selecting R-410A equipment now, customers will be able to realize the full life of their equipment without concern over future availability of R-22 refrigerant and service components. In addition, they will be able to minimize future expenses, as production caps are expected to significantly increase R-22 servicing costs. Customers can choose R-410A in a variety of models, including units featuring high- efficiency levels for low lifecycle costs and energy savings; the Humiditrol dehumidification system for humidity control and improved indoor air quality; a variable air volume (21 to 30 tons) option for building or utilizing zoning systems, and direct-drive and belt-drive units (3 to 5 tons) for increased unit selection flexibility.

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Power line filter
Tyco Electronics Ltd., Harrisburg, Pa.
Corcom EMC power line filters have maximum current ratings ranging from 3 to 30 amps. The EMC Series is the most compact dual stage Corcom filter available from Tyco. This product is suited to address the need for additional differential mode attenuation in the lower-frequency range, while maintaining high common mode performance. This type of performance is typically needed for motor drives and switch mode power supplies with increased operating frequencies. The EMC series is offered for applications where performance in a compact, cost-effective package is required.

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