User guide

Paramagnetic O2 Purity Analyzer Operation
Teledyne Analytical Instruments 45
To setup an Auto–Cal cycle:
Choose System from the Function buttons. The VFD will
display five subfunctions.
ContrastAuto—Cal
PSWDLogoutMore
Use < > arrows to blink Auto—Cal, and press Enter. A new
screen for Span/Zero set appears.
SpanOFFNxt:0d0h
ZeroOFFNxt:0d0h
Press < > arrows to blink Span (or Zero), then press Enter
again. (You won’t be able to set OFF to ON if a zero interval is
entered.) A Span Every ... (or Zero Every ...) screen appears.
SpanEvery0d
Start0hfromnow
Use  arrows to set an interval value, then use < > arrows to
move to the start-time value. Use  arrows to set a start-time
value.
To turn ON the Span and/or Zero cycles (to activate Auto-Cal): Press
System again, choose Auto—Cal, and press Enter again. When the
Span/Zero screen appears, use the < > arrows to blink the Span (or Zero)
OFF / ON field. Use  arrows to set the OFF / ON field to ON. You can
now turn these fields ON because there is a nonzero span interval defined.
4.3.3 Password Protection
If a password is assigned, then setting the following system parameters
can be done only after the password is entered: span and zero settings,
alarm setpoints, analysis range definitions, switching between
autoranging and manual override, setting up an auto-cal, and assigning a
new password. However, the instrument can still be used for analysis or
for initiating a self-test without entering the password.
If you have decided not to employ password security, use the default
password TETAI. This password will be displayed automatically by the
microprocessor. The operator just presses the Enter key to be allowed total
access to the instrument’s features.
NOTE: If you use password security, it is advisable to keep a copy of the
password in a separate, safe location.