Teledyne 6020 - Photometric analyzer User Manual

Page 46

3 Operation

Model 6020

3-22 Part I

Teledyne Analytical Instruments

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.

Select the

Alarm

function on the main menu to enter the

Alarm

function.

Use UP/DOWN to select either AL1 or AL2. If you must change the %/ppm
units, keep using UP/DOWN until you get to the units to be modified. Use Enter
to toggle between % and ppm.

Use the UP/DOWN to choose the alarm again. Then

Enter

to move to

the next screen.

1: 1

: :

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 UP/DOWN switch to change the
number. Holding down the key speeds up the incrementing or
decrementing. Enter when done, blinking cursor moves to the
next field.

•

To set the other parameters use the UP/DOWN key, and then
Enter to move to the next field..

•

Once the parameters for alarm 1 have been set, Enter the

Alarms

function

again, and repeat this procedure for alarm 2 (AL2).

•

To reset a latched alarm, go to

Dft–

and then toggle either Up or

DOWN two times. (Toggle it to

and then back to

)

–OR –

Go to

Ltch–

and then toggle either UP two times or DOWN two

times. (Toggle it to

and back to

)