Optional Components For Gas Lines - Emerson Rosemount Analytical X-STREAM X2 Series Instruction Manual

Instruction Manual
HASX2E-IM-HS
10/2012
1.2.6

Optional Components for Gas Lines

The analyzers can, as an option, be fitted with
further components. Not all components are
available for all analyzer types:
• internal sample gas pump
• internal valve block
• internal flow sensors
• internal flow monitor switch
• internal barometric pressure meters
• internal temperature sensors.
1.2.6.1 Internal Sample Gas Pump
An internal sample gas pump is used when
the sample gas is under insufficient pressure.
It ensures a constant flow of sample gas (max.
2.5 l/min through the analyzer).
When in internal pump is fitted, the relevant
parameter in the software setup dialog is set
to Yes ( 6.2.3.5, page 6-43). The pump
can be controlled either manually through a
software menu or optionally by a digital input.
1.2.6.2 Internal Valve Block
The use of an internal valve block allows all
necessary gas lines (zero gas, span gas,
sample gas) to remain permanently connec-
ted to the analyzer. Valves are then activated
automatically when required (e.g. during au-
tomatic calibration).
When an internal valve block is fitted, this is
shown in the relevant software setup dialog
as either Internal or Int+Ext (
page 6-43). The valves are controlled by
either a software menu, optionally by digital
input, or automatically during autocalibration.
Depending on the model, up to two valve
bocks can be fitted.
Emerson Process Management GmbH & Co. OHG
1.2 Configuration of Gas Lines
1.2.6.3 Internal Flow Sensor
Up to two internal flow sensors can measure
the flow of gas and can activate an alarm si-
gnal in the event of a failure. The alarm level
for flow sensors is operator adjustable to up
to 2000 ml/min. Depending on the model, up
to two sensors can be fitted and evaluated
separately.
When a sensor is fitted, the relevant parame-
ter in the software setup dialog is set to Yes
(
If the current flow rate is too low, a status
message is displayed and the parameter
under CHECK REQUESTS.. is set to Yes
(
1.2.6.4 Internal Flow Monitor Switch
An internal flow switch monitors the gas flow
and activates an alarm signal in case it is not
sufficient. The alarm level for the internal flow
switch is fixed and not operator adjustable.
Additional external switches may used and
connected via digital inputs. All fitted flow
switches are evaluated to share a common
alarm.
When an internal flow switch is fitted, the re-
levant parameter in the software setup dialog
is set to Yes (
If the current flow rate is too low, a status
message is displayed and the parameter
6.2.3.5,
under CHECK REQUESTS.. is set to Yes
(
X-STREAM X2
6.2.3.5, page 6-43).
Chapter 8 "Troubleshooting").
6.2.3.5, page 6-43).
Chapter 8 "Troubleshooting").
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