Section II Operating Instructions Teledyne API T802 Paramagnetic O2 Analyzer Operation Manual
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CONTROL IN
A B C D E F U +
SPAN CAL
CAL MODE
CONTROL IN
A B C D E F U +
-
+
5 VDC
Power Supply
Local Power Connections External Power Connections
RANGE2 SPAN
CO2 o
p
tion CAL
SPAN CAL
CAL MODE
RANGE2 SPAN
CO2 o
p
tion CAL
Figure 3-10: Control Input Connector
Table 3-7: Control Input Signals
Input # Status Definition ON Condition
A CAL MODE The analyzer is placed in Calibration mode. The mode field of the display
will read O2 CAL R or O2 CAL ZR
B REMOTE SPAN CAL
The analyzer is placed in span calibration mode as part of performing a low
span (midpoint) calibration. The mode field of the display will read O2 CAL
SR. If not active, it will be in ZERO MODE.
C RANGE2 CAL The analyzer is placed in span calibration mode as part of performing a High
Span calibration.
D CO2 CAL ONLY available if the optional CO2 is installed. Initiates calibration of the
CO2 sensor CO2 CAL R or CO2 CAL ZR
E & F SPARE
Digital Ground The ground level from the ana lyzer’s internal DC power supplies (same as
chassis ground)
U External Power input Input pin for +5 VDC required to activate Pins A – F.
+ 5 VDC output
Internally generated 5V DC power. To activate inputs A – F, place a jumper
between this pin and the “U” pin. The maximum amperage through this port
is 300 mA (combined with the analog output supply, if used).
3.3.1.7. CONCENTRATION ALARM RELAY (OPTION 61)
The Teledyne API T-Series analyzers have an option for four (4) “dry contact”
relays on the rear panel of the instrument. This relay option is different from and
in addition to the “Contact Closures” that come standard on all TAPI instruments.
The relays have three pins that have connections on the rear panel (refer Figure
3-11). They are a Common (C), a Normally Open (NO), and a Normally Closed
(NC) pin.
07275B DCN6418