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Vishay Intertechnology has announced the launch of the Vishay Nobel AST3IS transmitter. The AST3IS is a high-performance isolation amplifierdesigned for use with strain-gage transducers in hazardous areas without the need for Zener barriers. This eases earthing design and installation, and reduces costs and maintenance for process weighing systemsin applications such as chemical and pharmaceutical manufacturing. Being suitable for use near inflammable materials and in other hazardousenvironments, the AST 3IS transmitter also achieves higher temperature stability than previous generation models. It features a patented analogue-to-digital converter capable of up to 8.3million counts. It also features a DIN-rail mount for compact mechanical integration. By building in support for popular communication protocols, including RS-485and MODBUS RTU, the AST 3IS transmitter communicates with a common process control host without requiring external hardware or additional software. The AST 3IS operates from -10°C to 40°C and at up to 95% relative humidity.
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