Internal gear pumps fully jacketed
Here's a new line of fully jacketed internal gear pumps in 11 sizes in a range of 15-1,100 gpm (3.4-250 cu m/hr) at pressures to 280 psi (20 bar).
Pumps also provide jacketing around the perimeter of the rotor case, around the inlet and discharge throats, and, on many sizes, throughout the flange areas, to provide more than twice the heat transfer surface area. The company says this allows faster startup on ambient-temperature solids like asphalts and improves process control for temperature-critical materials like monomers, polymers, polyesters, and thermoplastic resins.
These pumps are also used in extreme environments where belowzero temperatures can freeze or damage pumped fluids.
With stainless steel, steel, ductile iron, and cast iron material options, they can handle a variety of fluids, withstanding temperatures to 800° F. (425° C.) and handling viscosities to 2 million SUS (440,000 cst).
The firm offers a choice of packing, component mechanical seals, or cartridge-style lip seals and single and double mechanical seals. Seal plans are available.
A variety of port configurations, including top-suction/bottom-discharge and 90° angle ports, is available.
The jacketing ports are available in threaded, flanged, or weld neck styles for use with saturated steam or heat transfer fluids.
The positive displacement design is suited for simple transfer applications as well as process metering or batch delivery.
Source: Viking Pump Inc., Box 8, Cedar Falls, IA 50613-0008.
Solid state relay gives precise heat control
This new RVMA family of solid state relays accepts the industry standard, analog 4-20 ma input and instantly converts it into a high speed pulse wave modulating or a time proportioning pulsing output.
When used with PID temperature control blocks in a PLC, SCADA system, or other control system, the new relay promises precise heat control without extra engineering or programming time.
Relays operate with a high-speed 500 ms overall cycle time and an 8.3 ms output resolution. Available is a slim footprint design, the 25 amp (1 in. wide) and 40 amp (2.5 in. wide) units use minimal din rail space-helping suit them as output devices for use with small PLCs or other machine control packages.
In addition, the RVMA uses new Superior Surge Survival engineering to help ensure long-term reliability.
Source: Continental Industries International, 741-F Miller Drive, Leesburg, VA 20175-8993.
New five-wire resistive touch screen
A new five-wire resistive touch screen design is based on a stable supply chain, vertically integrated manufacturing, and advanced design improvements.
The design consists of a flexible hard-coated polyester film, a fully integrated tail, a rigid glass substrate, and an insulator material that stabilizes the resistor pattern. Sophisticated electronics and software support the entire product line, the firm says.
Five-wire resistive touch screens provide the ability to touch with a finger, gloved hand, or any stylus. Offering a choice of glass thickness, a variety of hard coats, and a set of custom options, five-wire resistive designs can be ordered in a selection of sizes. Custom capabilities include gasket options, custom graphics, and special electromagnetic interference shielding to enhance and add value to the touch screen.
Source: 3M Touch Systems Inc., 300 Griffin Brook Park Drive, Methuen, MA 01844.
Tank inventory data on the internet
New TankMaster.net software enables tank terminal operators and their customer's hiring tank capacity to check out their tank farm status on an internet web site.
The software presents all data from plants equipped with this firm's inventory tank gauging system.
Tank content levels, volumes, and temperatures for individual tanks are user friendly viewed in all standard browsers, as are transactions and other historical events. Values, trends, and utilization can be observed.
The Windows based software resides on the TankMaster.net server, which is connected through a LAN to this company's standard inventory tank gauging software server. The TankMaster.net server polls the data of the tank from the inventory tank gauging software server and makes it available to the user through the TankMaster.net web site. The user can access this web site either through the internet or through a corporate intranet.
The web site is password protected. The data are only available to users who are assigned a user name and a password by the administrator. These users can read the data available on the site and are able to download the data in the form of Excel spreadsheets for editing.
Source: Saab Rosemount Tank Control, Box 130 45, SE-402 51, Göteborg, Sweden.
