M&C TechGroup FA-1_2_3,bi Operator's manual - Manual (Page 7)

7
Gas sampling and conditioning technology 5-6.10-ME
6 INTRODUCTION
The flow alarm units FA... are used for monitoring failures of sample gas or test gas in analysing
equipment or analyse systems.
The patented M&C flow alarm sensor FA-1/2/3bi can only be used on flow meters with meter tubes
out of transparent material. By means of the optical scanning, it is possible to register also very small
flow quantities for example in case of non-metallic or small particles.
We can also supply a high temperature version for temperatures of up to 180°C.
The M&C flow alarm units FA... are designed for stationary continuous operation and provide a long
service life and a minimum of maintenance work presuming a correct installation.
6.1 PATENTED FLOW ALARM SENSOR
The patented optical flow alarm sensors (forked light barriers) FA1/2/3bi are produced by
M & C TechGroup GmbH, D- 40885 Ratingen. [PATENT-No.: 3528270]
7 APPLICATION
In the analyse technique, the optical flow alarm sensors FA-1/2/3bi are used for the flow monitoring in
flow meters with meter tubes made of transparent material, for example Duran glass. By means of the
optical scanning, it is possible to detect also very low flow quantities in flow meters with non-metallic or
very small particles (1 mm).
The M&C electronic controllers series FA
®
are to be used for operating the flow alarm sensors FA-
1/2/3bi and FA2-H (see data sheet 5-6.15) as well as the liquid sensor KS 2 (not KS 2.Ex).