Teledyne 300m User Manual download pdf (Page 81)

Teledyne API Model 300M CO Analyzer Instruction Manual, 04033, Rev. A

For minimum back-diffusion through the vent and for minimum back-pressure in the manifold,

the following relationship should be met:

500

Where Q

is the vent flow in cc/min

is the analyzer flow in cc/min

L is the vent line length in inches

D is the ID of the vent line in inches

For Q

of 1000 cc/min

of 800 cc/min

D of .188 inches

L = approximately 72”

8.2 Multi-Point Calibration

Multi-point calibration requires seven approximately equally spaced calibration points, including

zero, using an NIST-traceable CO source.

The calibration must be carried out:

1. After maintenance

2. Every three months (recommended)

CAUTION

The test gas must be introduced into the analyzer through the sample

inlet port. All flow measurement devices must be calibrated against

an nist-traceable standard such as a bubble-flowmeter that has been

calibrated against an nist-traceable volume standard.

8-3

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Teledyne 300m User Manual Page 81