Teledyne 6200E - Sulfides Analyzer - Manual (Page 30)

Getting Started Model 6200E Instruction Manual
30 M6200E Rev: A1
ZERO AIR
• A gas that is similar in chemical composition to the earth’s atmosphere but without the gas
being measured by the analyzer, in this case H
2
S. If your analyzer is equipped with an IZS
or external zero air scrubber option, it is capable of creating zero air.
For analyzers without these options, a zero air generator such as the Teledyne Analytical
Instruments Model 701 can be used.
4. Once the appropriate pneumatic connections have been made, check all pneumatic fittings for
leaks using a procedure similar to that defined in Section 11.5.1.
3.1.2.1. Connections with Internal Valve Options Installed
If your analyzer is equiped with either the zero/span valve option (Option 50) or the internal
zero/span option (Option 51), the pneumatic connections should be made as follows:
External Zero
Air Scrubber
Filter
MODEL 701
Zero Air
Generator
Source of
SAMPLE Gas
VENT if input is pressurized
Zero/Span Valves – Option 50
MODEL 700
Gas Dilution Calibrator
(with O 3 generator option)
VENT
MODEL
6200E
Sample
Zero Air
Exhaust
Span
Source of
SAMPLE Gas VENT if input is pressurized
Internal Zero/Span Option (IZS) – Option 51
MODEL
6200E
Sample
Zero Air
Exhaust
Span Calibrated SO 2 or H 2 S
gas
(At high concentration)
Ambient
Air
Figure 3-8: Basic Pneumatic Connections for Units with Valve Options