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EX- Documentation
VA 450 / VA 452
thermal mass flow sensor
This document contains important information for the installation
and operation of the flow sensor in explosive environments.
Please read the instructions carefully and follow the instructions
mentioned in this manual.
In case of any different specifications between this Ex Docu-
mentation and the Instruction Manual, the specification in the
Ex documentation is valid!
0970 0043 Ex Documentation VA 450/452 English, V1.4, 05.11.12
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Related Manuals for CS Instruments VA 450
Summary of Contents for CS Instruments VA 450
- Page 1 Please read the instructions carefully and follow the instructions mentioned in this manual. In case of any different specifications between this Ex Docu- mentation and the Instruction Manual, the specification in the Ex documentation is valid! 0970 0043 Ex Documentation VA 450/452 English, V1.4, 05.11.12...
- Page 2 Materials which come in contact with the medium are of stainless steel 1.4404 / 316L and of sealing rubber NBR. The device must be connected to the potential equalization system. Special Please refer to page 5 regarding "Potential equalization" Attention 0970 0043 Ex Documentation VA 450/452 English, V1.4, 05.11.12...
- Page 3 The system meets the fundamental health and safety requirements Examination for the design and construction of devices and protective systems certificate, intended for use in potentially explosive atmospheres in accordance certificates of with appendix II of directive 94/9/EC. conformity 0970 0043 Ex Documentation VA 450/452 English, V1.4, 05.11.12...
- Page 4 Power supply and power consumption Medium pressure range Medium temperature range Ambient temperature range Caution information ATEX symbol CE marking Indication of type of protection, explosion group, temperature class, ingress protection Company name and address 0970 0043 Ex Documentation VA 450/452 English, V1.4, 05.11.12...
- Page 5 Fuse The power supply for the flow transmitter needs to have a fuse with following specification: Voltage 16 to 30 DC, fuse 0.5 A slow blow (according to IEC 127) 0970 0043 Ex Documentation VA 450/452 English, V1.4, 05.11.12...
- Page 6 Security screws at back and front cover Since this manual only contains ex-relevant information please refer Other tech- to the instruction manual of VA 450 and VA 452 for technical data nical infor- and further information. mation EN 60079-0:2009...
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