Teledyne 3000TA-EU - General purpose trace oxygen analyzer - Manual (Page 63)

Trace Oxygen Analyzer Operation
Teledyne Analytical Instruments
51
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:
 Value of the alarm setpoint, AL–1 #### ppm (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 ppm O
2
.)
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 (AL–2).
To reset a latched alarm, go to Dft– and then press either
A
two
times or
V
two times. (Toggle it to Y and then back to N.)
–OR –
Go to Ltch– and then press either ▲ two times or ▼ two times.
(Toggle it to N and back to Y.)
4.6 The Range Function
The Range function allows the operator to program up to three
concentration ranges to correlate with the DC analog outputs. If no
ranges are defined by the user, the instrument defaults to:
Low = 0–100 ppm
Med = 0–1,000 ppm
High = 0–1 0,000 ppm