Teledyne 6000A, Руководство по эксплуатации

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Photometric Analyzer Operation 3
Part I 3-21
Teledyne Analytical Instruments
to non-alarm conditions. This mode requires an alarm to be
recognized before it can be reset. In the non-latching mode, the
alarm status will terminate when process conditions revert to non-
alarm conditions.
4. Are either of the alarms to be defeated?
The defeat alarm mode is incorporated into the alarm circuit so
that maintenance can be performed under conditions which
would normally activate the alarms.
The defeat function can also be used to reset a latched alarm.
(See procedures, below.)
If you are using password protection, you will need to enter your password
to access the alarm functions. Follow the instructions in section 3.3.3 to enter
your password. Once you have clearance to proceed, enter the
Alarm function.
Press the Alarm button on the front panel to enter the Alarm function.
Use the
∆∆∆∆∆∇
keys to choose between % or ppm units. Then press
Enter
to
move to the next screen.
AL1: 1ØØØ ppm HI
Dft:N Fs:N Ltch:N
Five parameters can be changed on this screen:
• Value of the alarm setpoint, AL1: ####
• Out-of-range direction, HI or LO
• Defeated? Dft:Y/N (Yes/No)
• Failsafe? Fs:Y/N (Yes/No)
• Latching? Ltch:Y/N (Yes/No).
• To define the setpoint, use the < > arrow keys to move the
blinking over to AL1: ####. Then use the
∆∇
arrow keys to
change the number. Holding down the key speeds up the
incrementing or decrementing.
• To set the other parameters use the < > arrow keys to move the
blinking over to the desired parameter. Then use the
∆∇
arrow
keys to change the parameter.
• Once the parameters for alarm 1 have been set, press Alarms
again, and repeat this procedure for alarm 2 (AL2).
• To reset a latched alarm, go to
Dft–
and then press either
∆
two
times or
∇
two times. (Toggle it to
Y
and then back to
N.
)