Teledyne 3000TA-XLEU - Trace oxygen analyzer - Manual (Page 72)

Operation 3000TA-XL-EU
Teledyne Analytical Instruments 56
3. Are either or both of the alarms to be configured as failsafe?
You can set either or both of the concentration alarms to
operate in failsafe or non-failsafe mode.
 In failsafe mode, the alarm relay de-energizes in an
alarm condition.
 For non-failsafe operation, the relay is energized in an
alarm condition.
4. Are either of the alarms to be latching?
 In latching mode, once the alarm or alarms trigger,
they will remain in the alarm mode even if process
conditions revert back 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.
5. 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 1000 ppm HI
Dft—N Fs—N Ltch—N
Five parameters can be changed on this screen: