Zero/Span Valve Option 51; Zero/Span Valve Option 52; Figure 5-2: Pneumatic Diagram - Zero/Span/Shutoff Valves & Internal Zero With Zero; Figure 5-3: Pneumatic Diagram - Zero/Span/ Valves & Internal Zero - Teledyne 300E Instruction Manual

Model 300E Carbon Monoxide Analyzer
Instruction Manual

5.2.2. Zero/Span Valve Option 51

Pressure Span
Vent Span
Exhaust
Figure 5–2: Pneumatic Diagram – Zero/Span/Shutoff Valves & Internal Zero
In Option 51 nearly identical to Option 50 above, except that the Zero Air is
generated by an internal Zero Air Scrubber. This means that the IZS inlet can
simply be left open to ambient air.
Like Option 50, Option 51 requires an external gas line greater than 2 meters but
less than 10 meters in length be attached to the Span Vent outlet on the Rear Panel
of the instrument. Span gas must to be supplied at a minimum of 800 cc/min,
preferably 1600 cc/min.
Table 5–1 lists the Open/Closed state of each valve during the analyzers various
operational modes.

5.2.3. Zero/Span Valve Option 52

Pressure Span
Figure 5-3: Pneumatic Diagram – Zero/Span/ Valves & Internal Zero
P/N 04288 REV: A
Vent here if Input is Pressurized
Sample
Orifice Shut Off Valve
IZS
Zero Air Scrubber
with Zero Air Scrubber
Vent as shown if Inputs are Pressurized
Sample
Vent Span
IZS
Exhaust
Filter
Sample/Cal Valve
Zero/Span Valve
Filter
Sample/Cal Valve
Zero/Span Valve
Optional Hardware and Software
Option 51
Sample
Chamber
Pump
Option 52
Sample
Chamber
Pump
45