The sample timer is the amount of time it takes for one air sample to be pumped to your sensors. This calculation is based on your tube length.

If the sample timer is enabled, the pump status screen shows a countdown and beep once when a sample cycle is complete. The sample cycle repeats continuously until you turn the pump off.

If disabled, the sample timer does not show, the device does not beep, and the pump continues to function normally.

Blackline recommends a 120 second sample time for 10 feet of tube, with an additional second per foot of tube.

Settings for the pump can be found in G7’s main menu, under Settings > Pump options. For more information, see Device Settings.