Teledyne 3000ZA operating instructions AL-1 AL-2 Choose Alarm

Operation 3000ZA

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.

8.Are either of the alarms to be defeated?

9.The defeat alarm mode is incorporated into the alarm circuit so that maintenance can be performed under conditions which would normally activate the alarms.

10.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–1is 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 10 ppm HI

Dft—N Fs—N Ltch—N

Five parameters can be changed on this screen:

• Value of the alarm setpoint, AL–1 #### ppm (oxygen); value can be set from 0 to 10,000.00 ppm although the sensor output is good only to 250 ppm

•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 ppm O2.)

Teledyne Analytical Instruments 46