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Preparations For Installation; Flanges; Flange Installation Requirements - Siemens LDS 6 Operating Instructions Manual

In-situ laser gas analyzer

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Table of Contents

Preparations for Installation

2.1

2.1.1

Before the gas analyzer and its sensors can be used, a pair of process flanges should be

installed at the measurement site. The flanges must be installed at a safe and accessible

position to make installation and service easy to accomplish.

The flanges should be welded to the wall of the furnace or funnel.

The flange must protrude at least 100 mm (4") from the wall and 0-30 mm (0-1.2") into the

furnace/funnel.

There are applications where furnace walls move due to variations in temperature. If the

furnace walls move the sensors will be miss-aligned and the measurement interrupted. To

overcome this, the sensor can be fixed to a girder or other structure that is not influenced by

the temperature and the flexible metal tube is fitted between the process flange and the

sensor flange. Remember that the flanges fitted for the sensors must not deviate more than

±2°.

Note

It is very important that the flanges are mounted so that they are aligned. Otherwise the

measurements will not be correct.