Teledyne 7320 - NDIR analyzer - Manual (Page 21)

Infrared Gas Analyzer Installation 2
2-7 Teledyne Analytical Instruments
switching up to 3 amperes at 250 V ac into a resistive load. The connectors
are:
Threshold Alarm 1: • Can be configured as high (actuates when concen-
tration is above threshold), or low (actuates when
concentration is below threshold).
• Can be configured as failsafe or nonfailsafe.
• Can be configured as latching or nonlatching.
• Can be configured out (defeated).
Threshold Alarm 2: • Can be configured as high (actuates when concen-
tration is above threshold), or low (actuates when
concentration is below threshold).
• Can be configured as failsafe or nonfailsafe.
• Can be configured as latching or nonlatching.
• Can be configured out (defeated).
System Alarm: Actuates when DC power supplied to circuits is
unacceptable in one or more parameters. Permanently
configured as failsafe and latching. Cannot be de-
feated. Actuates if self test fails.
(Reset by pressing button to remove power. Then
press again and any other button EXCEPT
System to resume.
Further detail can be found in chapter 4, section 4-5.
Figure 2-4: Alarm Relay Contact Pins
T H R E S H O LD
A LA R M 1
P re s s h e re to
in se rt w ire .
R e le a se to h o ld .
In s e rt w ire
h e re .
M o v in g c o n ta c t
N o rm a lly o p e n
N o rm a lly c lo s e d