Vaisala HMP243 Uživatelská příručka stáhnout pdf (Strana 16)

HMP240

User's Guide M210300en

• tighten the nut

• connect the wires into the screw terminals and fasten a cable tie

around the wires

transmitter housing

cable tie

gland

brass disks

rubber ring

nut

NOTE

When the cable is grounded as explained on the

previous page, the metallic parts of the sensor head, the

shield of its cable, the transmitter housing and the

shield of the signal cable to external system are all

connected to each other. After this the whole system

can be grounded from one point only. If the grounding

is made via several points (sensor head, transmitter

housing, signal cable), make sure that the different

groundings are made to the same grounding potential.

Otherwise harmful grounding currents may be

generated. If you do the grounding via the transmitter

housing, use one serrated lock washer between a mount-

ing screw and the housing; the lock washer breaks the

paint on the housing.

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Vaisala HMP243 Uživatelská příručka Strana 16