Viatran IDP10-A, Инструкция по установке, калибровке и эксплуатации

Страница: 21 / 53

[21]
98MANALIDP10AV Rev. A 8/16/11
ground the shield at the transmitter. Cut and/or tape the shield so it cannot contact
the metal housing.
4. Plug unused conduit connection with the PG 13.5 or 1/2 NPT metal plug provided
(or equivalent). To maintain specified explosion proof and dust-ignition proof
protection, plug must engage a minimum of five full threads. Thread sealant is
recommended.
5. Connect an earth (ground) wire to the earth terminal in accordance with local
practice.
!
CAUTION
If the signal circuit must be earthed (grounded), it is preferable to do so at the negative
terminal of the dc power supply. To avoid errors resulting from earth loops or the
possibility of short-circuiting groups of instruments in a loop, there should be only
one earth in a loop.
6. Connect the power supply and receiver loop wires to the “+” and “–” terminal
connections shown in Figure 9.
7. Connect receivers (such as controllers, recorders, indicators) in series with power
supply and transmitter as shown in Figure 11.
8. Reinstall the cover onto the housing by rotating it clockwise until the O-ring contacts
the housing. Then continue to hand tighten as much as possible (at least 1/4 turn).
If cover locks are present, align the serration in the cover with the lock and unscrew it
until it extends into the cover serration to prevent unwanted cover rotation.
9. If wiring additional transmitters to the same power supply, repeat Steps 1 through 8
for each additional transmitter. The setup with multiple transmitters connected to a
single power supply is shown in Figure 12.