Autosampler Control
Opening the Door during Operation (AS/AS50)

Normally, the Autosampler door must remain closed while the AS or AS50 is running a batch. If the door is opened inadvertently, the sampling arm stops immediately and the batch is aborted. There are certain times during operation, however, when the autosampler is not busy, and it is safe to open the door. Chromeleon monitors operation and informs you when you can open the door without aborting the batch.

First, press the Door button on the AS or AS50 front panel. If the autosampler is busy, a message in the Audit Trail window informs you that it is currently not safe to open the door.

When the autosampler is no longer busy, a message informs you that it is now safe to open the door. A timer then begins counting down the time remaining in which it is safe to have the door open. It continues counting down after the door is opened. The door must be closed again before the timer reaches zero, or the batch will be aborted.

If, after pressing the Door button, you decide you do not want to open the door, you can either allow the timer to expire or press any button on the autosampler’s front panel to reset the timer to zero.

 Note:

To display the timer on the control panel, place a string display, gauge slider, or gauge indicator control on the control panel. Then, link the control to the object property, DoorSafetyTime. For more information, refer to How to: Controlling Devices from the Control Panel  Linking a Control to a Device.