Required RS-232 Options, Supporting Gases

Installation

Implementation: The RS-232 protocol allows some flexibility in its implementation. Table 3-6 lists certain RS-232 values that are required by the Model 4030 implementation.

Table 3-6: Required RS-232 Options

Parameter	Setting
Baud	2400
Byte	8 bits
Parity	none
Stop Bits	1
Message Interval	Sent at the end of each cycle.

3.3.5 Supporting Gases

Normally, four supporting gases of different composition (see Section 4.1: Equipment) will be required to operate the analyzer. The recommended composition of these gases is specified in the Application Data section of the Appendix. The gases should be supplied from cylinders that are equipped with the type of regulator specified in the aforementioned sections.

CAUTION: UNDER NO CIRCUMSTANCES SHOULD YOU EMPLOY A REGULATOR THAT IS NOT EQUIPPED WITH A METALLIC DIAPHRAGM ANYWHERE IN THE SYSTEM.

The regulators should be inspected prior to installation to be sure that they are oil-free. Failure to comply with these directives will result in a constant drift in analyzer output, as organic compounds will outgas into the plumbing system at a rate that is related to the ambient temperature. Use 316 stainless steel, dual-stage stainless steel diaphragm regulators only in fuel, sample, and blanket air lines; shutoff valves should be used downstream from each regulator.

Place the supply cylinders as close to the analyzer as possible, and interconnect them to the analyzer with new tubing. Be sure that all plumbing connections are free of leaks.

Note: Use only stainless steel tubing throughout the system. Consult the assembly, piping, outline drawings, and any Addenda included with this manual to determine if special conditions apply.

Teledyne Analytical Instruments