Teledyne 7500, Infrared Gas Analyzer For 10 minutes after turning on power, the alarm judgment is inactive.

41 Model 7500 Instruction Manual
Teledyne Analytical Instruments
After setting, the alarm setting is now completed by pressing the ENT key.
To close the “Alarm Setting”
To close the “ Alarm Setting” or to cancel this mode midway,
press the ESC key.
A previous screen will return.
Setting range
0 to 100% FS (Settable in each range).
Description of setting items
Upper limit value: Sets the upper limit value (concentration) of alarm.
Lower limit value: Sets the lower limit value (concentration) of alarm.
Contact action: Selects one of upper limit alarm, lower limit alarm, and upper limit or lower limit
alarm.
Upper limit alarm ... Alarm contact operates when above upper limit value.
Lower limit alarm ... Alarm contact operates when below lower limit value.
Upper limit alarm or lower limit alarm ...Alarm contact operates when above upper limit value or
below lower limit value.
ON/OFF: Enables the alarm function if set at ON, or disables the alarm function if set at OFF.
* The upper limit value cannot be set below the lower limit value, and the lower limit value cannot be set
above the upper limit value.
If it is desired to set the upper limit value below the lower limit value already stored in the memory, reduce
the lower limit value beforehand, or vice versa.
Typical on-screen display when an alarm occurs
When an upper limit alarm has occurred, the “High alarm” message
lights at CH (component)
(“Low alarm” at lower limit alarm).
CAUTION
For 10 minutes after turning on power, the alarm judgment is inactive.