Preliminary Instructions - B-I Inductrial BI-SM2004 Manual

B-I INDUSTRIAL CO., LTD.
CHAPTER 3

3-1 Preliminary Instructions

A. This equipment comprised :
A.1 Light Beam Projector
This consists of two parts, a tube housing a solid state light source and optical system and a
flange casting which is mounted onto the flue or stack. The flanged casting should be
insulated against the flue or ducting by an asbestos gasket to reduce conduction of heat into
the projector and receiver units.
A.2 CDS cell Receiver
This has a casting for mounting on the flue or stack similar to the projector unit. A second
tube houses a photocell, and optical system which should be cleaned at regular intervals in
order to prevent soot deposits causing incorrect operation. The cell should not be subjected
to an ambient temperature in excess of 70 deg Centigrade.
A.3 Control Unit
This is contained in a robust housing suitable for panel or wall mounting. Wiring should be
carried out in accordance with the diagram.
B. The following points should be carefully observed before installation:
B.1 Optical units must be rigidly mounted and properly aligned.
B.2 Avoid temperature extremes at the projector, receiver and cable junctions i.e. direct
sunlight, hot stack etc. Max. temperature 70°C.
B.3 Prevent external light sources affecting the optics i.e. install away from duct or flue exit.
B.4 The optical units should be installed after possible pipe connection to an inert gas
system.
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