Transmitter takes transducers to hazardous areas
A
Vishay Nobel product story
Edited by the Engineeringtalk editorial team
Sep 30, 2005
The Vishay Nobel AST3IS transmitter is a high-performance isolation amplifier designed for use with strain-gauge transducers in hazardous areas without the need for Zener barriers.
The Vishay Nobel AST3IS transmitter is a high-performance isolation amplifier designed for use with strain-gauge transducers in hazardous areas without the need for Zener barriers.
This eases earthing design and installation, and reduces costs and maintenance for process weighing systems in applications such as chemical and pharmaceutical manufacturing.
In addition being suitable for use near inflammable materials and in other hazardous environments, the AST3IS transmitter also achieves higher temperature stability than previous generation models.
The AST3IS features a patented analogue-to-digital convertor capable of up to 8,300,000 counts.
It features a DIN-rail mount for easy and compact mechanical integration.
By building in support for popular communication protocols including RS485 and Modbus RTU, the AST 3IS transmitter can communicate with a common process control host without requiring external hardware or additional software.
Fieldbus communication is possible via the Gate 3S module available separately.
The AST 3IS accepts up to six ATEX-approved load cells of 350 ohms each, and is approved to ATEX II GD.
The AST 3IS operates from -10 to +40C, at up to 95% relative humidity.
It is also IP20 ingress-resistant, further enhancing usability in a wide range of environments and applications.
The AST 3IS unit features a patented analogue-to-digital convertor for superior resolution and conversion speed, and has analogue as well as digital outputs that allow designers to optimise accuracy and response time.
Two relay outputs are provided, with short response time allowing the AST 3IS to be used in high-precision level control applications.
Easy setup and calibration is an additional feature of the AST 3IS.
It can be achieved by using the AST 3IS user interface directly, or by using the Deltacom configuration tool via a remote PC.
Deltacom runs on Microsoft Windows operating systems including Windows 95 and Windows NT4.
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Contact Vishay Nobel
Tel +44 1274 782229
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