M&C TechGroup FA1-H Operator's manual - Manual (Page 10)

10
Gas sampling and gas conditioning technology 5-6.15ME
10 RECEIPT OF MARCHENDISE AND STORAGE
The optical flow monitoring system is delivered in 4 sub-assembly modules :
sensor head FA2-H,
2 light guides FO..
K-FA-H pre-amplifier
electronic controller FA-1.1 or FA-1.4.

Please take the optical flow monitoring system and possible special accessories carefully out of the
packaging material immediately after arrival, and compare the goods with the items listed on the
delivery note;

Check the goods for any damage caused during delivery and, if necessary, notify your transport
insurance company without delay of any damage discovered.
N O T E !
The optical flow monitoring system should be stored in a protected frost-free
area
!
11 MOUNTING
The mono-stable version has got 2 light guides FO1/2/3 which must be mounted according to drawing
inside the sensor head FA2-H and inside the connection adaptor OA-bi in opposite position 2 + 1.
Inside the connection adaptor, there are always 2 high capacity LED's as light source and 2 photo
transistors as receiver which are mechanically protected.
In case of mono-stable function, only 1 piece each is used and the way 4 + 3 are shut with screws
M4x8 in the works in order to avoid optical interferences.

The sensor head FA2-H has to be fixed to the desired control point of the flow sensor
measuring tube with the pressing screw showing to the right side. It has to be fixed in such a
way that the light ray of the flow alarm sensor should not be deflected by an eventual
inscription or coloured background of the measuring tube.
C A R E ! Never screw down the stainless steel pressing screw without the white
coloured protecting cap! It should always be only hand-screwed!

The light guides type FO1 have got a total length of 600 mm, type FO2 has got a length of
1200 mm and type FO3 has got a length of 900 mm. They have to be lead with their inserted
ends from inside to outside via a cable gland or similar in the heat isolated wall of a heated
housing. Attention must be paid that the angled 3mm light guide ends in the positioned sensor
head FA2-H can be mounted without pulling. The fixing of the light guides by a cable gland or
similar can only be effected after the mounting has been finished because in the next mounting
step they have to be screwed into the adapter OA-bi.
C A R E ! The metallic protective covering of the spiral hose of the light guides must
not be bended to tight, the minimum bending radius is 25 mm.