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Optional Hardware and Software Teledyne API - T100H Addendum to T100 Operation Manual)
26
5.2. Ambient Zero / Two Ambient Span Valve Option (OPT 50C)
This option includes a special set of valves that allows two separate SO
2
mixtures to enter the analyzer from two
independent sources. Typically these two gas mixtures will come from two, separate, pressurized bottles of
certified calibration gas: one mixed to produce a SO
2
concentration equal to the expected span calibration value
for the application and the other mixed to produce a concentration at or near the midpoint of the intended
measurement range. Individual gas inlets, labeled HIGH SPAN and LOW SPAN are provided at the back on the
analyzer.
The valves allow the user to switch between the two sources via keys on the front panel or from a remote
location by way of either the analyzer’s digital control inputs or by sending commands over it’s serial I/O port(s).
NOTE
The analyzer’s software only allows the SLOPE and OFFSET to be calculated when sample is being
routed through the HIGH SPAN inlet.
The LOW SPAN gas is for midpoint reference checks only.
GAS INPUT
MANIFOLD
Span/Cal
Valve
FLOW CONTROL &
PRESSURE SENSOR
VACUUM
PRESSURE
SENSOR
SAMPLE
PRESSURE
SENSOR
CRITICAL
FLOW ORIFICE
700 cm
3
/min
@ 7 In-Hg-A
Particulate
Filter
PUMP
EXHAUST
GAS OUTLET
SAMPLE
GAS INLET
INSTRUMENT CHASSIS
ZERO AIR
INLET
HIGH SPAN
AIR INLET
Zero Gas
Valve
LOW SPAN
AIR INLET
Low Span
Valve
High Span
Valve
UV
LAMP
PMT
REACTION
CELL
UV
Detector
Figure 5-2: Pneumatic Diagram of the T100H with Option 50C Installed
07265A DCN6038