Teledyne 4020 – Hydrocarbon analyzer (special version for automatic background gas switching) User Manual

Page 69

Total Hydrocarbon Analyzer

Operation

Teledyne

Analytical

Instruments

LOW triggers the alarm when the concentration falls below
the setpoint.

 Are the alarm contacts to be fail safe or non-fail safe?
 Should the alarm 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 alarm.

Note: If you are using password protection, you will need to enter

your password to access the alarm functions. Follow the
instructions in section 4.6.7.1 to enter your password.
Once you have clearance to proceed, you can enter the
ALARM function.

To configure or set the alarms:

Activate or Defeat the Alarm

<▲▼>

Scroll to the ALARM function using the UP/DOWN
keys.

<Enter> Activate

the

ALARM

function by pressing .

This brings you to the next alarm screen which allows
you to activate or defeat alarm 1.

<Enter>

Press to move to the Active/Defeat field.

<▲▼>

Use the UP/DOWN keys to toggle between Active and

Defeat.

Press to accept the entry and move the arrow to
the next function (High/Low).