Rosemount 356
Reference Manual
00809-0100-4856 Rev AE
February 2020
2-2
GENERAL
CONSIDERATIONS
Measurement accuracy of any type of instrument depends upon
proper installation of the device and its associated piping, valves,
and electrical connections. When installing the 356 Connector onto
a device, consider the need for easy access, personnel safety and
suitable connector/device environment.
The 356 Connector is available with M20x1.5 threads or PG13.5
threads as indicated in the 356 Product Data Sheet. Before
installing the instrument side onto the intended device, ensure that
the device housing includes compatible threads or that a qualified
thread adaptor is available for use.
The instructions contained in this section apply only when the 356
Connector is ordered separately from the intended device. If the
356 is not factory-installed, qualification of the device/connector
interface becomes the end user’s responsibility.
The KTA qualification of the 356 was completed in conjunction with
the Rosemount 3152 Pressure Transmitter. As such, most
instructions in this section are focused on activities related to
installation of the instrument side onto the 3152. However, it should
be noted that the use of the 356 Connector is not limited to the 3152
or to Rosemount transmitters.
NOTE
If the 356 Connector is not factory-installed by RNII, qualification of
the instrument/connector interface becomes the user’s responsibility.
NOTE
When installing the 356 on other devices, consult the device
manufacturer’s documentation for specific instructions related to the
device.
ELECTRICAL
CONSIDERATIONS
Polarity
This section contains information to be considered prior to preparing
the instrument side connector for installation. Read this section
carefully before proceeding to ensure the connector and device will
function properly when installed.
Prior to installing a 356 instrument side connector, it is important to
understand the polarity requirements and characteristics of the
connector. Incorrect polarity can lead to non-functioning devices or,
in some cases, a damaged device.
The 356 instrument side connector can be provided in 2- or 3-wire
configurations. Figure 2-1 shows the wiring scheme for 2- and 3-
wire configurations.
Pin #1 or pin #2 can be connected to positive (+) terminal of the
intended device. Careful consideration must be given to ensure that
the same pin is designated and identified as positive (+) on both
instrument side and field side connectors.
