The Agilent 7697A Headspace Sampler has onboard electronics pneumatics control which was added to improve the overall instrument performance. With this addition, several significant differences can be noted between the Agilent G1888A Headspace Sampler and the 7697A Headspace Sampler. One benefit of incorporating the onboard pneumatics control is that a GC AUX module is no longer needed to control the vial pressurization pressure. Only a supply of gas is required to be plumbed into the vial pressurization bulkhead on the back of the instrument. Figure 1 shows the flow path of the 7697A Headspace Sampler and Figure 2 shows the flow path of the G1888A Headspace Sampler.
Publication number: 5991-1542EN
Publication Date: July 18, 2013