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Emerson Process Management GmbH & Co. OHG1-28
X-STREAM X2
Instruction Manual
HASX2E-IM-HS
02/2012
analog outputs can also be provided, e.g. to
provide a measurement signal at different re-
solutions. A maximum of four analog outputs
is possible.
A serial Modbus interface can also be installed
on request (RS 232 or RS 485 with Modbus
RTU protocol
); alternatively also access to
Ethernet-Modbus-TCP. In this case the RS
interface signals are routed to the appropriate
number (up to 5) of the 36 terminals.
Digital inputs and outputs can be used to
control analyzer functions and external
components. The 7 inputs and 9 outputs are
connected to peripheral devices via a further
36-terminal strip. The number of digital inputs
and outputs can be doubled (to 14 inputs and
18 outputs) by adding a second card and an
additional 36-terminal strip.
Detailed technical information on the various
interfaces can be found in
1.3, page 1-9
The conguration of the terminals is described
in chapter 4 “Installation” and the software
settings in chapter 6 “Software”.
A further submin-D socket, which is not in
detail described in this manual, is also located
at the rear of the unit, and is designated as a
Service Interface.
The Service Interface is elec-
trically connected to the unit’s
electronic components. If it is
incorrectly handled, damage to
the unit may result.
The Service Interface may only
be used by EMERSON service
personnel or specially trained
staff
Gas connections
Depending on the conguration of the unit
(number of channels, series or parallel pi-
ping), up to eight ame arresters are provi-
1.8 X-STREAM X2FD
ded for the supply of sample and calibration
gases. The assignments of the connectors is
given on an adhesive label situated near the
connectors.
Optional two of the ttings may be used to
purge the housing with either
• inert gas to minimize interference from
ambient atmospheres when measuring
very small concentrations (e.g. CO
2
)
or:
• air or inert gas when measuring aggres-
sive and/or ammable gases.
For further information, see
section
1.2.6, page 1-5.
Special components
For the analysis of aggressive and/or am-
mable gases, and depending on the analysis
method used (photometer or TC), infallible
components can be used. The risk of an
uncontrolled release of gases due to a leak
can be minimized by the use of stainless steel
piping and clamping rings. Furthermore, for
measuring oxygen in ammable atmosphe-
res, intrinsically safe measuring cells, which
prevent the ignition of gas mixtures in the case
of a failure, can also be used.