3.6.4 Carrier Supply
The carrier gas is specified in the Application Drawing Package on the Block Diagram Utility
Connections sheet. See Technical Specifications included with the analyzer for requirements
for the air supply.
Install two secured carrier gas cylinders in tandem near the analyzer mounting location. This
allows exchange of the cylinders without disrupting the carrier supply. Install carrier lines using
new, clean, ¼” (.635 cm) stainless steel tubing and fittings between the carrier gas cylinders
and the analyzer. Do not use cutting oil on the tubing. Install a check valve to prevent
contamination if backpressure should occur.
If hydrogen carrier is used, then the hydrogen connection must be to an external pressure alarm
switch. This switch is wired to an internal digital input to generate an alarm when pressure from
the cylinder falls below the programmed threshold.
Typical carrier consumption is 5100 liters (180 standard cubic feet) per month.
Table 3-1 Regulator Assemblies
Regulated Gas Siemens Part # Valve & Fitting Material
Helium or nitrogen of ultra high purity X10014 Stainless Steel
Hydrogen of ultra high purity X10035 Stainless Steel
Figure 3-13 Automatically-switched carrier-gas cylinders
Installation Steps
3.6 Utility Gas Supply Installation
Installation Manual
30 Installation Manual, 12/2019, 2000595 Rev 1
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