Teledyne 3010PAC - Split architecture percent oxygen analyzer (EU - CENELEC) - Manual (Page 27)

Oxygen Analyzer Part I: Control Unit
Part I: 3-5 Teledyne Analytical Instruments
Analog Outputs: There are four DC output signal pins—two pins
per output. For polarity, see Table 3-1. The outputs are:
0–1 V dc % of Range: Voltage rises linearly with increasing oxygen,
from 0 V at 0 ppm to 1 V at full scale ppm. (Full
scale = 100% of programmable range.)
0–1 V dc Range ID: 0.25 V = Low Range, 0.5 V = Medium Range,
0.75 V = High Range, 1 V = Air Cal Range.
4–20 mA dc % Range: Current increases linearly with increasing oxygen,
from 4 mA at 0 ppm to 20 mA at full scale ppm.
(Full scale = 100% of programmable range.)
4–20 mA dc Range ID: 8 mA = Low Range, 12 mA = Medium Range, 16
mA = High Range, 20 mA = Air Cal Range.
Table 3-1: Analog Output Connections
Pin Function
3 + Range ID, 4-20 mA, floating
4 – Range ID, 4-20 mA, floating
5 + % Range, 4-20 mA, floating
6 – % Range, 4-20 mA, floating
8 + Range ID, 0-1 V dc
23 – Range ID, 0-1 V dc, negative ground
24 + % Range, 0-1 V dc
7 – % Range, 0-1 V dc, negative ground
Alarm Relays: The three alarm-circuit connectors are spring termi-
nals for making connections to internal alarm relay contacts. Each pro-
vides 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 amperes 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).