Alarm Relays - Teledyne 2010A Operating Instructions Manual

3 Installation
terminals are used. They generate a steady preset voltage (or current when
using the current outputs) to represent a particular range. Table 3-2 gives
the range ID output for each analysis range.
Table 3-2: Analog Range ID output—Example
Range
Range 1
Range 2
Range 3
Range 4 (Cal)

3.3.4 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 nor-
mally closed contact connections. The contact connections are indicated by
diagrams on the rear panel. They are capable of switching up to 3 amperes
at 250 V ac into a resistive load. See Figure 3-5. The connectors are:
Threshold Alarm 1:
Threshold Alarm 2:
System Alarm:
3- Part I
Voltage (V) Current (mA) Application
0.25
0.50
0.75
1.00
• Can be configured as high (actuates when concen-
tration is above threshold), or low (actuates when
concentration is below threshold).
• Can be configured as fail-safe or non-fail-safe.
• Can be configured as latching or nonlatching.
• Can be configured out (defeated).
• Can be configured as high (actuates when concen-
tration is above threshold), or low (actuates when
concentration is below threshold).
• Can be configured as fail-safe or non-fail-safe.
• Can be configured as latching or nonlatching.
• Can be configured out (defeated).
Actuates when DC power supplied to circuits is
unacceptable in one or more parameters. Perma-
nently configured as fail-safe and latching. Cannot
be defeated.
Actuates when cell can not balance during zero cali-
bration.
Actuates when span parameter out off its limited
parameter.
Actuates when self test fails.
Teledyne Analytical Instruments
8 0-1 % H in N2
2
12 0-10 % H
2
16 0-1 % H in Air
2
20 0-1 % H in N2
2
Model 2010A
in N2