ABB WICB Benutzerhandbuch
2600T Series Pressure transmitters | OI/266/WIHART-EN 27
6 Transmitter connection
Important. HART hand-held communicator may be connected
at any termination point in the loop. No need of 250 ohms
resistance for communication purposes.
at any termination point in the loop. No need of 250 ohms
resistance for communication purposes.
6.4 Supply requirement
Pressure transmitter power supply is granted by a 3.6V size ‘D’
battery. Standard supplied battery is a Lithium-thionyl chloride
cell certified for Hazardous Areas.
battery. Standard supplied battery is a Lithium-thionyl chloride
cell certified for Hazardous Areas.
6.5 Powering the transmitter on
Follow these steps to power the transmitter on:
— Remove the temporary plastic cap from one of the two
electrical connection ports located at both sides in the
upper part of the transmitter housing.
electrical connection ports located at both sides in the
upper part of the transmitter housing.
— This connection port has a M20 threads. Dedicated plug
has to be fitted to this port to comply with plant standards.
has to be fitted to this port to comply with plant standards.
Important. 266 Pressure Transmitter is certified IP67. To
maintain the IP67 certification rating, it is necessary to select
the dedicated plug.
maintain the IP67 certification rating, it is necessary to select
the dedicated plug.
— Remove the housing cover of the “field terminals” side.
See the indication engraved on one side of the housing.
See the indication engraved on one side of the housing.
— Remove the battery pull-tab grabbing it firmly and pulling
it completely outside from its slot. This will allow the cell to
make contact with the electronic module.
it completely outside from its slot. This will allow the cell to
make contact with the electronic module.
Note. 266 WiPressure battery is manufactured by TADIRAN
Batteries GmbH (manufacturer code SL 2780)
Batteries GmbH (manufacturer code SL 2780)
—
Before installing the huosing cover, check whether the
display is working or not. If yes, put back the housing
cover, turn it to seat O-ring into the housing and then
continue to hand tighten until the cover contacts the
cover, turn it to seat O-ring into the housing and then
continue to hand tighten until the cover contacts the
housing metal-to-metal.
6.6 Protective Grounding
Pressure transmitter housing should be grounded or earthed in
accordance with national and local electrical codes. Ground
connection is mandatory for surge protector equipped devices
in order to ensure proper functioning.
accordance with national and local electrical codes. Ground
connection is mandatory for surge protector equipped devices
in order to ensure proper functioning.
Protective grounding terminals (PE) are available outside and/or
inside the housing of the transmitter. Both ground terminals are
electrically connected and it up to the user to decide which one
to use. The most effective transmitter case grounding method
is direct connection to earth ground with impedance equal or
less of 5 ohm.
inside the housing of the transmitter. Both ground terminals are
electrically connected and it up to the user to decide which one
to use. The most effective transmitter case grounding method
is direct connection to earth ground with impedance equal or
less of 5 ohm.
6.3 HART
Figure 31: HART transmitter connection scheme
2
3
4
1
1 Handheld communicator | 2 External ground termination
point |
point |
3 Battery | 4 Fast connection for harvesting unit