8
Atmospheric Technology
Sampling
—
Indicates a channel is sampling
Waiting
—Indicates a channel has been programmed to sample
Purging
—
Indicates a channel is purging prior to sampling
Idle
—Indicates a channel has not been programmed to sample
Aborted
—Operator terminated sampling
Finished
—A successful sample has been collected without errors
Used Can
—Canister initial pressure above limit
Press Tol
—Canister pressure did not meet expected pressure within a given
tolerance
Flow Tol
—
Canister flow rate tolerance exceeded
Zero Tol
—
Canister MFC required excess zero compensation
Power Failure
—
Sampler restarted due to an input power or CPU failure.
Errors
—
Multiple errors, power outage, or sample aborted
3.6 Purge Flow
Prior to sampling, the sampler is purged at the maximum flow controller flow rate.
The purge flow rate is displayed on the left side of the screen in the Port 1 flow rate
and the Channel 2 flow rate, if present.
3.7 Abort
The
Abort
button is used to terminate sampling after purging has started. Pressing
the
Abort
button will require the operator to enter a new sampling sequence to
resume sampling. This action does not alter the stored sequence. If power is lost
and then restored, sampling will resume.
3.8 Function Tabs
Several function tabs are located along the top of the screen to enable the operator
to interact with the sampler to set the date and time, enter operating parameters,
input a sampling schedule, retrieve data, leak check canisters, or set-up the sampler
using the SOP (Standard Operating Procedure) option. The operation of each tab
is described in the Programming Section.
