Teledyne 6200T - Sulfides Analyzer - Manual (Page 68)

Getting Started Model 6200T Total Sulfur Analyzer
Teledyne Analytical Instruments 68
3.3.2.3. Pneumatic Layout for Zero/Span Valves Option
Figure 3-19 shows the internal, pneumatic connections for a 6200T with the zero/span
valve option installed.
FLOW
SENSOR
FLOW / PRESSURE
SENSOR PCA
SAMPLE
PRESSURE
SENSOR
V
ACUUM
M
ANI
F
O
L
D
FLOW
CONTROL
ASSY
EXHAUST TO OUTER
LAYER OF KICKER
SAMPLE/CAL
VALVE
SAMPLE GAS
INLET
ZERO AIR INLET
SPAN 1 INLET
ZERO/SPAN
VALVE
SAMPLE FILTER
Chassis EXHAUST GAS
OUTLET
KICKER EXHAUST
TO PUMP
HYDROCARBON
SCRUBBER
(KICKER)
UV
LAMP
PMT
SAMPLE
CHAMBER
PUMP
Figure 3-19: Pneumatic Layout with Zero/Span Valves Option
Table 3-10 describes the state of each valve during the analyzer’s various operational
modes.
Table 3-10: Zero/Span and Sample/Cal Valve Operating States
MODE VALVE CONDITION
SAMPLE
Sample/Cal Open to SAMPLE inlet
Zero/Span Open to ZERO AIR inlet
ZERO CAL
Sample/Cal Open to zero/span inlet
Zero/Span Open to ZERO AIR inlet
SPAN CAL
Sample/Cal Open to zero/span inlet
Zero/Span Open to SPAN GAS inlet
The state of the zero/span valves can also be controlled by any of the following means:
 manually from the analyzer’s front panel by using the SIGNAL I/O
controls located within the DIAG Menu (refer to Section 5.9.1)
 by activating the instrument’s AutoCal feature (refer to Section 9.8)
 remotely by using the external digital control inputs (refer to Section 8.1.2
and Section 9.7.1)