Teledyne 7500ZA operating instructions On/Off

NDIR Gas Analyzer Settings and Calibration

Alarm Setting Descriptions

The alarm contact number can be assigned to any channel. Channels can also have multiple alarms assigned to them.

Channel:	Channel setting targeted for alarm.
H-Limit value:	Sets the high limit value (concentration) for
	alarm.
L-Limit value:	Sets the low limit value (concentration) for alarm.
Kind of Alarm:	Select either High limit alarm, Low limit alarm,
	and High limit or Low limit alarm, HH limit
	alarm, and LL limit alarm.
	High, HH:	Alarm contact closes when above
		H-limit alarm.
	Low, LL:	Alarm contact closes when below
		L-limit alarm.
	High or Low: Alarm contact closes when above
		H-limit value or below lower limit
		value.
ON/OFF:	Enables the alarm function when set to ON, or
	disables it if set to OFF.

Note: The H-limit value cannot be set below the L-limit value, and the L-limit value cannot be set above the H-limit value.

If it is desired to set the H-limit value below the L-limit value already stored in the memory, reduce the L-limit value beforehand, and vice versa for setting the low limiot above the high limit.

Note: After turning on power, the alarm logic trigger is inactive for 10 minutes.

When an H-limit alarm occurs, the “H-alarm” message displays in the relevant component field. Other alarm displays are:

L-alarm for Low-limit alarm, HH- alarm for high limit alarm, HH-alarm for high-high alarm, and LL-alarm for low- low alarm.

Teledyne Analytical Instruments 45