Calibration Verification
Users can verify that the system is working properly by taking a sample with the Verification Sample provided with the system. To do this, with the system ‘Ready’, open the Verification Sample and hold it close to the nozzle as shown in the figure below. Press START. The system should alarm. If the system does not alarm to TNT, repeat this process, making sure the Verification Sample is held no more than 1 inch from the nozzle. If the system still does not alarm, contact a Supervisor or Administrator for help.

Note: The Verification Sample can not be reliably used when the desorber for the wiping traps is in place unless the paper trap is used to wipe the inside of the lid of the Verification Sample can. Usually, there are enough condensed vapors on the inside of the lid to provide a reliable sample, although this method is not quantitative.

Note: An alternate way of using the Verification Sample when in Wiping Mode is to open the desorber beyond the normal stop by unscrewing the thumbscrew on the hinge limit to release the bottom of the desorber. Be careful not to touch any of the components inside the desorber during this process-There is now access to the nozzle for verification in the manner of the non-contact method.

Normal Operation
When placed on a flat surface, the nozzle should be placed away from the surface (i.e. overhanging a table edge as shown below).

正常操作
        当放置在一个平面时，喷针将放置在远离表面的位置。（例如悬挂在桌子边缘，如下图所示）