BFI Automation CFC 200, Original Operating Instructions

Page: 32 / 56

Transport, Installation and Connection
4-6
Recommendation:
For adjustment, use the optical alignment device (availa-
ble as an option) as shown in the figure below. The best
setting is obtained when a large visual field is achieved.
correct incorrect
Risk of damage to the eyes from infrared and ultraviolet
radiation and from escaping gases during visual flame
monitoring!
Wear filtering protective goggles !
The images appear mirror inverted in
horizontal and vertical direction !
The length and the diameter of the sight tube have a di-
rect influence on the analysable flame radiation as the vis-
ual angle of the lens system is defined. Without restriction
of the visual range, the maximum length L of a sight tube
for conventional tube diameters D is as follows:
D: 1“ 1.5“ 2“
L: 0.5 m 0.8 m 1.1 m
For this reason, the sight tube should always be as short
as possible. A diameter of 2" is recommended.
At a diameter of 1", the sight tube should not be any
longer than 50 cm. When doubling the length, double the
diameter to 2" !