Teledyne 3010MA - Paramagnetic oxygen analyzer, includes 0-100% range - Manual (Page 54)

Part 1 Control Unit Model 3010MA
54 Teledyne Analytical Instruments
In latching mode, once the alarm or alarms trigger, they will
remain in the alarm mode even if process conditions revert 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
4.3.3 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. Make sure that AL–1 is blinking.
AL—1 AL—2
Choose Alarm
Set up alarm 1 by moving the blinking over to AL–1 using the < >
arrow keys. Then press Enter to move to the next screen.
AL—1 98.00 % HI
Dft—N Fs—N Ltch—N
Five parameters can be changed on this screen:
• Value of the alarm setpoint, AL–1 #### % (oxygen)
• 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 AL–1 ####. Then use the
 arrow keys to change the number.
Holding down the key speeds up the incrementing or decrementing.
(Remember, the setpoint units are percent-of-oxygen.)