VPT10-H
HART
®
PRESSURE TRANSMITTER
INSTALLATION, OPERATION, CONFIGURATION AND MAINTENANCE MANUAL
______________________________________________________________________________________________________________________________
15
Figure 2.7 shows the power terminals (PWR BUS), the ground terminals (one internal and one external), in addition to
the communication and test terminals. To power the equipment it is recommended to use twisted-pair 22 AWG.
Table 2.2 describes the functions of the VPT10-H.
Figure 2.7 – Connections for VPT10-H. Table 2.2 – Terminal description for VPT10-H.
NOTE
All cables used to connect the VPT10-H to the HART
®
network must be shielded to avoid interference
and noise.
The conduits through which the power cables of the equipment pass must be mounted in such a way as to prevent
water from entering the terminal block. The threads of the conduits must be sealed according to the standards required
by the area. The unused electrical connection must be sealed with a suitable plug and sealant.
Figure 2.8 shows the correct way to install the conduit in order to avoid the entrance of water or other product that
could cause damage to the equipment.
Figure 2.8 – Conduit installation.
Terminal Description
Power Terminals - PWR BUS
24 Vdc without polarity (12 to 45 Vdc)
Grounding Terminals
1 internal and 1 external
Test Terminals - TEST
4-20 mA measurement without circuit opening
Communication Terminals - COMM
Communication with HART
®
Configurator
NOTE
It is extremely important to ground the equipment for complete eletromagnetic protection and also to
ensure the correct performance of transmitter on the HART network.