Teledyne 4020 – Hydrocarbon analyzer (special version for automatic background gas switching) - Manual (Page 70)

Operation Model 4020
Teledyne Analytical Instruments 52
CAUTION: IT IS NOT GOOD PRACTICE TO SILENCE AN
EXISTING ALARM BY SETTING THE ALARM
ATTRIBUTE TO ‘DEFEAT”. THE ALARM WILL NOT
AUTOMATICALLY RETURN TO “ACTIVE” STATUS.
IT MUST BE RESET BY THE OPERATOR. IF IT IS
NOT RESET, YOUR PROCESS WILL BE RUNNING
WITHOUT SAFEGUARDS THIS INSTRUMENT IS
DESIGNED TO PROVIDE.
Setting the Alarm as High or Low
If the arrow is not already adjacent to the text High/Low, use the
above procedure to relocate the arrow to this function as shown below.
<Enter> Press to move to the High/Low field.
<▲▼> Use the UP/DOWN keys to toggle between High and
Low.
<Enter> Press to accept the change and move to the next
alarm function.
Entering or Changing a Setpoint
If the arrow is not already adjacent to the text AL-1 XX.XX ppm, use
the above procedure to relocate the arrow to this function as shown
below.