Teledyne 6200T - Sulfides Analyzer - Manual (Page 62)

Getting Started Model 6200T Total Sulfur Analyzer
Teledyne Analytical Instruments 62
3.3.2. Pneumatic Connections
This section provides not only pneumatic connection information, but also important
information about the gases required for accurate calibration (Section 3.3.2.10); it also
illustrates the pneumatic layouts for the analyzer in three common configurations.
Before making the pneumatic connections, carefully note the following cautionary and
additional messages:
CAUTION
GENERAL SAFETY HAZARD
SULFUR DIOXIDE (SO
2
) IS A TOXIC GAS.
DO NOT vent calibration gas and sample gas into enclosed areas. Obtain
a Material Safety Data Sheet (MSDS) for this material. Read and
rigorously follow the safety guidelines described there.
CAUTION
GENERAL SAFETY HAZARD
Sample and calibration gases should only come into contact with PTFE
(Teflon) or glass tubes and fixtures.
They SHOULD NOT come in contact with brass or stainless steel fittings
prior to the reaction cell.
The exhaust from the analyzer’s internal pump MUST be vented outside
the immediate area or shelter surrounding the instrument.
It is important to conform to all safety requirements regarding exposure
to SO2.
ATTENTION COULD DAMAGE INSTRUMENT AND VOID WARRANTY
Maximum Pressure:
Ideally the maximum pressure of any gas at the sample inlet should
equal ambient atmospheric pressure and should NEVER exceed 1.5 in-
hg above ambient pressure.
Venting Pressurized Gas:
In applications where any gas (span gas, zero air supply, sample gas
is) received from a pressurized manifold, a vent must be provided to
equalize the gas with ambient atmospheric pressure before it enters
the analyzer to ensure that the gases input do not exceed the
maximum inlet pressure of the analyzer, as well as to prevent back
diffusion and pressure effects. These vents should be:
• at least 0.2m long
• no more than 2m long
• vented outside the shelter or immediate area surrounding the
instrument.