Vaisala DMP248 Manual de servicio Pagina 27

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 145
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 26
CHAPTER 3_______________________________________________________________INSTALLATION
VAISALA _________________________________________________________________________ 21
Grounding
A single electrical cable with a screen and three to ten wires is
recommended for power and analogue output/serial bus connections.
The cable diameter should be 7...10 mm.
The screen of the electrical cable must be grounded properly to
achieve best possible EMC performance. Recommended cable shield
is done in the cable gland as shown.
remove the brass disks, rubber ring and nut from the transmitter
housing
strip 165 mm of the cable insulation, but leave 25 mm of the braid
visible
slip the nut and rubber ring over the cable insulation
slip the brass disk that has the bigger hole in it over the braid so
that it rests against the cable insulation
slip the other brass disk over the wires to the middle of the braid
(If the cable diameter is less
than 7mm, use a shrinking
tube or an adhesive tape)
cable
braid
flexible wires 0.5 mm²
(AWG 20), stranded wires
recommended
D = Ø 7...10 mm
3
brass
disks
25
rubber
ring
nut
brass disks
140
165
shielding tube
braid
push back the braid and press it between the two brass disks to
achieve a full 360° grounding; the fold between the disks should
have the same diameter as the brass disks
secure the braid with a shielding tube
insert the wires into the transmitter housing through the gland
Vista de pagina 26
1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 144 145

Comentarios a estos manuales

Sin comentarios