Oxygen Analyzer
Part I: Control Unit
Part I: 3-5
Alarm Relays: The three alarm-circuit connectors are spring terminals
for making connections to internal alarm relay contacts. Each provides a set
of Form C contacts for each type of alarm. Each has both normally open and
normally closed contact connections. The contact connections are indicated
by diagrams on the rear panel. They are capable of switching up to 3 am-
peres at 250 V ac into a resistive load. See Figure 3-6. 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
I/O
button to remove power. Then
press
I/O
again and any other button EXCEPT
System
to resume.
Further detail can be found in chapter 4, section 4-5.
Figure 3-6: Types of Relay Contacts
Summary of Contents for 3010PA
Page 17: ...1 6 Part I 1 Introduction Model 3010PA ...
Page 21: ...2 4 Part I 2 Operational Theory Model 3010PA ...
Page 57: ...iv Part II Model 3010P Oxygen Analyzer ...
Page 69: ...2 8 Part II 2 Operational Theory Model 3010P ...
Page 77: ...3 Installation Model 3010P 3 8 Part II ...