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The standard full-size racks of AS230 autosamplers holds two 60 x 1.5 ml vials respectively. The autosamplers transport mechanism uses an X-Z-Theta movement to optimize vial pick-up and return. Vials are picked up by the gripper arm, and positioned below the sampling unit. The gripper transport mechanism and sampling unit are driven by motors. Movement is monitored by optical sensors and optical encoders to ensure correct operation. The metering device is always flushed after injection to ensure minimum carry-over. A high-speed hybrid stepper motor drives the six-port (only 5 ports are used) injection valve unit. During the sampling sequence, the valve unit bypasses the autosamplers, and connects flow from the pump to the column directly. During injection and analysis, the valve unit directs the flow through the autosamplers that ensures that all the samples are injected onto the column, and that the metering unit and needle are always free from sample residue before the next sampling sequence begins. Control of the vial temperature in the thermostatted autosampler is achieved using an additional Agilent 1100 Series module; The ALS thermostat. Details of this module are given in the Agilent 1100 Series thermostatted autosampler Supplemental Manual. Specifications: Injection: Stepper motor drive runs via X, Y, Z. Control: Micro-proccessor Communications: RS232C and system control port (remote control), 5 integrated REED relays, and external contact closures Sample loop: Changeable sample loop, stardard: 100μ L Sample increment: Linear stepper motor drive 500μ L glass syringe pushes sample Materials: Stainless steel or PEEK Reproducibility: Fixed volume injection mode 100μ L, errors≤ 0.5% Changeable volume injection mode 10μ L, errors≤ 1% Record effect: ≤ 0.01%(decided by selected cleaning process) Cleaning process: Programmable cleaning flow and cleaning volume Analytical time: The least unit can be 1 minute, 0.2minute and 1 second, the most time can be 9999 times of the least unit Sample rack: Standard rack contains two 60 x 1.5 mL sample vials Power requirement: 110/220V; 50/60 Hz Dimension: 300mm x 415mm x 445mm.
