Level sensors & software for inventory control.At the big NPE show in Chicago, two suppliers showed off new bulk-material level sensors and inventory-control software. Bindicator, Spartanburg, S.C., showed its Mark-4 Yo-Yo weight-and-cable type of continuous level sensor (pictured), which is offered with optional web-based i-Level inventory-management software. The sensor is rated for hazardous environments and has RS-485 A TIA/EIA standard for serial multipoint communications lines. It can be implemented with as little as a wire block with four screws or with DB-9 or DB-37 connectors. By using lower-impedance drivers and receivers, RS-485 allows more nodes per line than RS-422. Modbus A high-level protocol for industrial networks developed in 1979 by Modicon (now Schneider Automation Inc.). Providing services at layer 7 of the OSI model, it defines a request/response message structure for a client/server environment. Modbus runs over various data links including its own Modbus+ token passing network and serial links such as RS-232 and RS-485. It is widely used with TCP/IP over Ethernet. communication capability. Silos up to 100 ft tall can be measured with a resolution of i cm, the company says. Up to 99 sensors can be set up and monitored from a remote display. Tel: (864) 574-8060 * PTDirect: 751DB Monitor Technologies, Elburn, Ill., has expanded its product line with Flexar guided-wave radar sensors for continuous level measurement of pellets, powders, or liquids. It requires no field calibration, withstands high temperatures, and works with materials having a wide range of bulk densities and dielectric constants. It is compatible with the company's newest SiloTrack Version 3.5 PC-based inventory-management software. Also from Monitor is SiloPatrol SE, a new version of its cable-based level sensor for bulk solids. Suitable for dusty, hot conditions, it uses Hall-effect sensing to provide measurement resolution to 3 mm, said to be an "industry best. "This sensor is also compatible with SiloTrack v. 3.5 soft ware Tel: (800) 601-5953 * PTDirect: 173JX [ILLUSTRATION OMITTED] |
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