A5E33329501
SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS
Page 243
m
mmmm
Tr
oub
leshoot
in
g
Acoustical Noise
To confirm that the problem is acoustical, place several layers of cardboard over the face
of the transducer. If the noise is reduced, the noise is definitely acoustical.
Non-Transducer Noise Sources
Remove all input and output cables from the SITRANS LUT400 individually while
monitoring the noise. If removing a cable reduces the noise, that cable may be picking up
noise from adjacent electrical equipment. Check that low voltage cables are not being
run adjacent to high voltage cables or near to electrical noise generators such as variable
speed drives.
Filtering cables is an option but is not recommended unless all other options have been
exhausted.
The SITRANS LUT400 is designed to work near heavy industrial equipment such as
variable speed drives. Even so, it should not be located near high voltage wires or switch
gear.
Try moving the electronics to a different location. Often moving the electronics a few
meters farther from the source of noise will fix the problem. Shielding the electronics is
also an option, but it should be a last resort. Proper shielding is expensive and is difficult
to install properly–the shielding box must enclose the SITRANS LUT400 electronics
completely, and all wires must be brought to the box through grounded metal conduit.
Common Wiring Problems
•
Make sure that the transducer shield wire is connected at the electronics end only.
Do not ground it at any other location.
•
Do not connect the transducer shield wire to the white wire.
•
The exposed transducer shield wire must be as short as possible.
•
Connections between the wire supplied with the transducer, and any customer
installed extension wire should only be grounded at the LUT400.
On Siemens transducers the white wire is negative and the black wire is positive. If the
extension wire is colored differently, make sure that it is wired consistently.
Extension wire must be shielded twisted pair. See the installation section for
specifications.
Reducing Electrical Noise
•
Ensure that the transducer cable does not run parallel to other cables carrying high
voltage or current.
•
Move the transducer cable away from noise generators like variable speed drives.
•
Put the transducer cable in grounded metal conduit.
•
Filter the noise source.
•
Check grounding.
Содержание SITRANS LUT400
Страница 9: ......
Страница 10: ......
Страница 11: ......
Страница 12: ...Controllori ad ultrasuoni Manuale d istruzioni 08 2012 SITRANS LUT400 HART SITRANS ...
Страница 25: ...Pagina 6 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Note sulla sicurezza Note ...
Страница 37: ...Pagina 18 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Installazione e montaggio Note ...
Страница 51: ...Pagina 32 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Collegamento Note ...
Страница 81: ...Pagina 62 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML1998MV51 mmmmm Messa in esercizio Note ...
Страница 149: ...Pagina 130 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Funzionamento Browser Note ...
Страница 151: ...Pagina 132 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Funzionamento AMS Note ...
Страница 153: ...Pagina 134 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Funzionamento FC375 Note ...
Страница 155: ...Pagina 136 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Funzionamento FDT DTM Note ...
Страница 247: ...Pagina 228 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Manutenzione Note ...
Страница 265: ...Pagina 246 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Guida alla soluzione dei problemi Note ...
Страница 271: ...Pagina 252 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Dati tecnici Note ...
Страница 287: ...Pagina 268 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm App A Rif tecnico Note ...
Страница 289: ...Pagina 270 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm App B Certificati e assistenza Note ...
Страница 303: ...Note Notes fm Page 2 Thursday October 11 2001 8 48 AM ...
Страница 304: ...IQ300IX fm Page 5 Tuesday October 2 2001 1 43 PM ...
Страница 306: ...Operating Instructions SITRANS LUT400 HART 12 2014 Edition Ultrasonic Controllers ...
Страница 319: ...Page 6 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Safety Notes Notes ...
Страница 331: ...Page 18 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Installing and Mounting Notes ...
Страница 345: ...Page 32 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Connecting Notes ...
Страница 375: ...Page 62 SITRANS LUT400 HART OPERATING INSTRUCTIONS 7ML1998MV01 mmmmm Commissioning Notes ...
Страница 443: ...Page 130 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Operation Browser Notes ...
Страница 445: ...Page 132 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Operation AMS Notes ...
Страница 447: ...Page 134 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Operation FC375 Notes ...
Страница 449: ...Page 136 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Operation FDT DTM Notes ...
Страница 543: ...Page 230 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Maintenance Notes ...
Страница 561: ...Page 248 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Troubleshooting Notes ...
Страница 567: ...Page 254 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Technical Data Notes ...
Страница 583: ...Page 270 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm App A Technical Ref Notes ...
Страница 584: ...Page 271 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm App A Technical Ref ...
Страница 585: ...Page 272 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm App A Technical Ref ...
Страница 587: ...Page 274 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm App B Certs Support Notes ...