Manual

Installation Model 2120
The sample manifold system must be designed so that you can:
Purge the sample line and pre-adjust the flow rate before
admitting a sample to the analytical cell.
Maintain a flow of argon through the analytical cell whenever
ionization voltage is being applied.
The following guidelines are presented as an aid in constructing a
suitable external sampling system for the Model 2120:
Alter the geometry of the system in Figure 3-2, as necessary, to
suit your specific needs and to maintain access to items on the
rear panel. However, alterations should be adhered to
schematically.
Use 1/8-inch (0.32 cm) electro polished stainless steel tubing for
all parts of the manifold between the source and sample inlet
connections of the analyzer. Although you can use 1/4-inch (0.64
cm) tubing, it is not recommended. The manifold should be a
welded assembly wherever possible.
Use only high-purity components with metal seals.
Eliminate excess components.
Minimize "dead spaces" in the sample lines.
Use a 1/4-inch (0.64 cm) VCR fitting for the analyzer inlet
connection. 1/4-in VCR glands with 1/8 in tube stubs are
available.
Use a high-quality regulator or device to maintain a constant
pressure to the zero, sample, and span inlet lines. Teledyne
recommends using a high-purity regulator with the following
specifications:
2-stage tied diaphragm
100 psi outlet
15 RA max
5 ports
CGA 580 welded on inlet side
1/4 MVCR (1 port), 1/4 FVCR (1 port)
2 gauges
24 Teledyne Analytical Instruments