Teledyne SyriXus 65x Installation And Operation Manual page 122

SyriXus Series Pumps Installation and Operation Guide
Section 6 Modifier Addition
EAR99 Technology Subject to Restrictions Contained on the Cover Page
6-4
When working with supercritical CO
is not uncommon to desire that the CO
without interruption to maintain a liquid fluid state and stabilize the
fluid parameters, such as density. Supercritical CO
pressible and generates considerable heat while being pressurized.
The pressurizing action may cause fluid parameters (like density and
temperature) to become less predictable. Using a continuous flow
pumping arrangement may prove to be desirable.
Using a temperature control jacket for cooling is highly recom-
mended when pumping liquefied gases in Continuous Mode. These
fluids tend to create heat as a result of compression work which can
lead to performance issues over time.
Typically, electric valves are preferred in this arrangement as they
tend to close more securely. The Teledyne ISCO electric valve option
described earlier is well suited to this application. The two pumps
related to the continuous flow need to be attached to the PUMP A and
PUMP B electrical connections as described in Section 5.4 "User Sup-
plied Valves". The valve cable must be attached to the electric valve
control board.
Continuous flow modifier addition is not recommended with the
SyriXus 65x pump model. To use a 65x, either the air valve option
would be employed, or a user provided electric valve arrangement
would be required.
Configurations for supercritical CO
way as with two independent pumps, except that only one check valve,
one refill kit and one manual outlet valve is needed. Also, the modifier
pump must be connected to the PUMP C connector on the controller.
When working with supercritical CO
use of a temperature control jacket for cooling is recommended.
as the primary working fluid, it
2
is supplied continuously
2
NOTE
NOTE
is performed in much the same
2
NOTE
(or other liquefied gases), the
2
is very com-
2