Thermo Scientific Dionex AS-DV, Operator'S Manual

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Dionex AS-DV Operator’s Manual
104
Doc. 065259-05 10/12
C.1 TTL Input Function
TTL IN
allows the load cycle to be started via a contact-closure relay output or TTL
output signal from a connected controlling device. When the input is triggered for
the first time, the Dionex AS-DV performs a full vial delivery on vial position 1.
When triggered again, the Dionex AS-DV performs a full vial delivery on vial
position 2, and so on. If no vial is detected, an error occurs. Triggering the input
again clears the error and moves the carousel to the next available vial.
C.1.1 Load Cycle Timing
To inject the sample at the correct time, it is important to know the length
of time required to complete the load cycle. The injection valve should
not be switched to the inject position until after the load cycle is complete.
Several factors (including vial size and delivery speed) determine the time
interval between the start of the load cycle and injection of the sample.
Table C-1 lists the times required to complete four types of load cycles.
Use these times to determine how long to wait after triggering
TTL IN
before switching the injection valve to inject. (Each time value listed
allows a margin of error of approximately ± 0.2 minutes.)
C.1.2 Delivery Speed, Flush Factor, and TTL Homing Delay
Settings
If the Dionex AS-DV has never been connected to Chromeleon, the
following default settings for delivery speed, flush factor, and TTL
homing delay are used:
•
Delivery speed: 4.0 mL/min
Vial Size Type Delivery
Speed
(mL/min) Injection Per
Vial (Full
Vial) Time (Min)
Per Sample
Load
Large (5.0 mL) Loop 4.0 1 2.7
Concentrator 1.0 1 8.8
Small (0.5 mL) Loop 1.6 1 1.3
Concentrator 0.4 1 3.4
Table C-1. Dionex AS-DV Load Cycle Times