Controlling A Valve; From The Keyboard; From The Run Or Clock Time Tables; Gas Sampling Valve - Agilent Technologies 7820A Advanced User's Manual

Controlling a Valve

From the keyboard

From the run or clock time tables

Gas sampling valve

Carrier in
LOAD position
Loop
Sample in
Sample out
Advanced User Guide
Valves have two positions controlled by the [On] and [Off] keys.
The keyboard commands for two-position valves are:
[Valve #] <scroll to the valve> [On]
and
[Valve #] <scroll to the valve> [Off]
stop
The Valve On and Valve Off commands can be run time or clock
time programmed. See
and "Clock Time Programming"
If a valve is rotated by a run time program, it is not
automatically returned to its initial position at the end of the
run. You must program this reset operation yourself.
If a valve is configured as a gas sampling valve, it starts a run
automatically when it is switched to the Inject position. This
can be done with a keyboard command or by a subsequence or
clock table entry. You may have two gas sampling valves
installed.
To column
INJECT position
Rotates valve to one stop
Rotates valve to the other
"Run Time Programming"
on page 15.
6
Valves
on page 12
115