Appendix 1 – Toshiba LF494 User Manual
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TOSHIBA
6 F 8 AO 77 4
Appendix 1
Electromagnetic CompatibiJity and Low Voltage Safety
HI<;cirQmagnetic Fiowrneier Ll'494, LF404 has been confirmed to cotnply with the requircmenis of the HMC
directive 89/336/EFC EMC directive This device has been tested in a typical configuration in accordance with the following standards in an in dustrial environment. ■ Generic emission standard Conducted RF emissions Radiated RF emissions ‘ Generic immunity standard Conducted RF immunity Radiated RF immunity Electrostatic discharge Fast Transient burst EN50081-2 EN55011 HN3,'^nil EN500S2-2 ENV5d41 ENV3tn4n/ENV50204 EN61000-4-2 ENr> 10004-4 The above EMC tests have been carried out with die flowmcicr installed properly in accordance with this instruction manual. However, there is no guarantee that interference will not occur in a particular installa tion. To reduce interference to or from other equipment, plea,se check the following insi all alien points, (1) Use shielded cables for ail 1/0 cables. When the flowmeter is the ,separatcd type, the signal cable and excitation cable for the connection between the detector and the convener are supplied by Toshiba. To improve immunity» pass each cable through a thick steel conduit tube. (2) If this device is installed in an area where RFJ exists, deviation of the current output signal may be caused. In this case, ferrite cores will be required on each V O cable. Please contact Toshiba or the agency if required. (3) This device is designed to be used in an industrial environment and may cause reception imerfer- ence to radio, television or wdreless communications. In this case, relocate the receiving antenna. (4) The use of a transceiver or wireless equipment near this device may cause intcrfettnce to the accu rate measurement. If deviation of the output signal appears during use of a radio, increase the dis* mnee between the converter or the signal cable and the antenna. - 1 5 2 -