Toshiba LF494 - Manual (Page 153)

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 <ind tlte low voltage directive 93/iS/EEC,
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.
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