Teledyne T100, Instruction Manual, Page: 47 / 404

Teledyne ML - T100 UV Fluorescence SO2 Analyzer
Getting Started
47
The status outputs are accessed via a 12-pin connector on the analyzer’s rear panel
labeled STATUS (Figure 3-9). Pin-outs for this connector are presented in Table 3-7.
STATUS
1 2 3 4 5 6 7 8 D
+
S
Y
S
T
E
M
OK
OK
H
IG
H
R
A
N
G
E
C
O
N
C
V
A
L
ID
Z
E
R
O
C
A
L
S
P
A
N
C
A
L
D
IA
G
M
O
D
E
Figure 3-9: Status Output Connector
Table 3-7: Status Output Signals
REAR PANEL
LABEL
STATUS
DEFINITION
CONDITION
1 SYSTEM OK ON if no faults are present.
2 CONC VALID
OFF any time the HOLD OFF feature is active, such as during calibration or when
other faults exist possibly invalidating the current concentration measurement
(example: sample flow rate is outside of acceptable limits).
ON if concentration measurement is valid.
3 HIGH RANGE ON if unit is in high range of either the DUAL or Auto range modes.
4 ZERO CAL
ON whenever the instrument’s
ZERO point is being calibrated.
5
SPAN CAL
ON whenever the instrument’s
SPAN point is being calibrated.
6 DIAG MODE ON whenever the instrument is in DIAGNOSTIC mode
7&8
SPARE
D
EMITTER BUS The emitters of the transistors on pins 1-8 are bussed together.
SPARE
+ DC POWER
+ 5 VDC, 300 mA source (combined rating with Control Output, if used).
Digital Ground
The ground level from the analyzer’s internal DC power supplies