Installing The Zero/Aspirator Drive Gas Line - Ametek 931S Operator's Manual

3-12 | Model 931S / Model 932S UV Analyzers

Installing the Zero/Aspirator Drive Gas Line

The Zero/Aspirator gas line is supplied by the customer. The tubing must
be 1/4" 316 stainless steel tubing with appropriate 1/4" NPT connectors.
Refer to Final "As-Built" drawings for Zero/Aspirator Drive Gas pressure
settings for your application.
The recommended Zero gas is UHP Nitrogen or Instrument Air for non-
flammable streams.
 If using Instrument Air, it must meet the ANSI/ISA S7.0.01 (1996)
specifications at all times. If it cannot meet these requirements, an
NOTE
inlet filter system must be installed.
To install the Zero/Aspirator gas line:
1. Route the line from the supply source to the analyzer.
2. Purge the line to remove any liquids or particulate in it before con-
necting it to the analyzer.
3. Connect the line to the Zero/Aspirator Drive Gas Inlet on the analyzer.
4. Connect the Zero gas air line to the Zero gas cylinder or the
Instrument Air line to the Instrument Air supply.