Internal Zero/Span (Izs) (Option 51); Figure 5-3: Pneumatic Diagram - Zero/Span Valves; Table 5-2: Zero/Span Valve Operating States - Teledyne 400E Instruction Manual

Model 400E Ozone Analyzer
Instruction Manual

5.4. Internal Zero/Span (IZS) (Option 51)

The Model 400E Ozone Analyzer can also be equipped with an internal Zero Air and
Span Gas generator. This option includes an ozone scrubber for producing Zero Air,
a variable ozone generator and a valve for switching between the Sample gas inlet
and the output of the scrubber/generator.
Figure 5-3 shows the internal pneumatic connections for a Model 400E Ozone
analyzer with the IZS Option installed.
Span Gas
Zero Air
Exhaust
Table 5-2 contains the operational state of the major components of the analyzer's
pneumatic system during various operational modes when the IZS option is
installed.
Option
50
P/N 04316 Rev: B
Sample
Filter &
Charcoal
Dry Air
Scrubber
Figure 5-3: Pneumatic Diagram – IZS Option

Table 5-2: Zero/Span Valve Operating States

Mode Valve
Sample/Cal Valve
SAMPLE
Ozone Generator
Sample/Cal Valve
ZERO
CAL
Ozone Generator
Sample/Cal Valve
SPAN
CAL
Ozone Generator
Filter
Sample/Cal
Ozone
Valve
Generator
Critical Flow
Pump
Orifice
Open to SAMPLE inlet
OFF
Open to Ozone Generator
OFF
Open to Ozone Generator
ON at intensity level set by user
Optional Hardware and Software
Option 51 (IZS)
Ozone
Scrubber
Measure/Reference
Optical
Bench
Condition
Valve
51