Teledyne T101 - page 48

Getting Started Teledyne API – T101 Operation Manual
46
ZERO/SPAN (Z/S) VALVE GAS FLOW
PMT
EXHAUST TO OUTER
LAYER OF KICKER
REAC T ION CELL PURGE
FLOW
SENSOR FLOW / PRESSURE
SENSOR PCA SAMPLE
FILTER
INSTRUMENT C HASSIS
EXHAUST GAS
OUTLET
VACUUM MANIFOLD
KICK E R E XHAUST TO P UM P
PUMP
FLO W
CONTR OL
ASSY
SAMPLE
PRESSURE
SENSOR
UV
LAMP
HYDROCARB ON
SCRUBBER
(KICKER)
SAMPLE
CHAMBER
SO2
Scrubber
MOLYBDENUM
CONVERTER
SO2  H2S
H2S / SO2
MODE VALVE
ZERO AIR
INLET
SPAN GAS
INLET
SAMPLE/ CAL
VALVE
NO
COM
NC
SAMPLE GAS
INLET
Gas Fl ow wh en m ult i gas vers i on of
Analyzer is measuring SO
2.
COM
NC NO
ZERO/SPAN
VALVE
NC
NO
COM
Figure 3-15. Pneumatic Diagram of the T101 With Z/S Option Installed
The following table describes the state of each valve during the analyzer’s various
operational modes.
Table 3-10. Zero/Span Valve Operating States
MODE VALVE CONDITION VALVE PORT CONNECTION
Sample/Cal Open to SAMPLE inlet NO  COM
SAMPLE Zero/Span Open to ZERO AIR inlet NO  COM
Sample/Cal Open to zero/span inlet NC  COM
ZERO CAL Zero/Span Open to ZERO AIR inlet NO  COM
Sample/Cal Open to zero/span inlet NC  COM
SPAN CAL Zero/Span Open to SPAN GAS inlet NC  COM
07266B DCN6485