Simplicity 4040 Specifications download pdf (Page 27)

Installation

Teledyne Analytical Instruments 27

3.3.2 Gas Connections

The analyzer gas connection diagram identifies the various gas

connection points as to function and location. Figure 3-1 shows the gas

connection points for instruments with AutoCal module.

OPTIONAL

SAMPLE-SPAN

MANIFOLD

SPAN GAS

FLOW RESTRICTOR

Figure 3-1: Gas Connections

Gas connections to the instrument are made at the 1/8”or 1/4”

stainless steel tube fittings provided on the rear panel. Note that the

Purge and Sensor Vent fittings are 1/4” while all other gas connections

are 1/8”.

It is recommended that all gas tubing leading to the connections on

the back of the analyzer be of the coiled type. This will facilitate sliding

the unit out of the case without disconnecting the gas supply to the

analyzer.

Before tubing is connected to the system, it must be decontaminated

to rid it of hydrocarbon deposits. Using a small torch, heat each length

of tubing, while passing nitrogen through it, until it glows red. Begin at

the nitrogen source end and proceed down the length of the tube,

“chasing” the red glow (and hydrocarbon deposits) down to the open

end of the tube. Cap tubing while not in use with suitable non-

contaminating caps.

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Simplicity 4040 Specifications Page 27