Mc-techgroup FA-1_2_3 bi Data sheet Bedienungsanleitung PDF herunterladen

M&C TechGroup Germany GmbH • Rehhecke 79 • 40885 Ratingen • Germany

info@mc-techgroup.com • www.mc-techgroup.com • Fon +49 2102 935-0 • Fax +49 2102 935-111

9.4

Embracing Challenge



Easy mounting without dismounting the

measuring glass



Also for very low ow quantities



Also for non-metallic or very small oat-

ing balls



Easy adjustment of any alarm set-point

Special Features

Optical bi-stable ow alarm sensors

series FA®

Version FA-1/2/3, bi forked lightbarrier

FA-1/2/3, bi

Application

The patented forked light-barrier FA-.., bi is

used in gas and water analysis for flow-mon-

itoring in flowmeters with measuring tubes

made of transparent material, e.g. Duran glass.

Thanks to optical scanning, very low flow

quantities can be detected even in flowm-

eters with non-metallic or very small (1 mm)

floating balls.

Description

The patented M&C forked light-barrier FA-..,

bi consists of a compact aluminium body

with a fixed, open prism and a pressure

screw. This makes positioning of the sensor

FA-.., bi on the flowmeter’s measuring glass

very easy; it is not necessary to disassemble

the measuring glass. Three basic versions

cover a measuring glass diameter range of

5 - 55 mm.

Within the sensor’s body, a mechanically pro-

tected, high-intensity LED is mounted on the

left side as a light source and two photo-

transistors are mounted on the opposite side

as receivers.

The standard 3-meter long connection cable

exits on the left side adjacent to the pressure

screw. The LED emitters’ light beam is incident

on the photo-transistors through the flow

measuring glass. As soon as a floating ball

breaks the light beam, one or both of the

photo-transistors are blanked out.

The necessary FA-1.. electronic controllers

analyse this status changes accordingly. The

bi-stable operation of the FA-1.. electronic

controllers ensure identification of the set

flow rated value in the event of measured

values falling below or exceeding this pre-set

value with the sensor in any position. The

mono-stable operation of the FA-1.. electronic

controller indicates only whether the float is

located in the light beam of the light-barrier,

above or below it.

A special sensor head FA2-H is supplied for

temperatures up to +180 °C. Here, a fibre-

optic light guide is located in the sensor head.

Via this light guide the incident and

emergent light is conducted by the

transmitter/receiver located externally in a

separate adapter in the “cold area“.

Technical specications and illustrations are without

obligation, subject to modications. 09.96/11.06

1 2

Inhaltsverzeichnis

Seite 1 - Description

M&C TechGroup Germany GmbH • Rehhecke 79 • 40885 Ratingen • Germany [email protected] • www.mc-techgroup.com • Fon +49 2102 935-0 • Fax +49 21

Seite 2 - Technical Data

M&C TechGroup Germany GmbH • Rehhecke 79 • 40885 Ratingen • Germany [email protected] • www.mc-techgroup.com • Fon +49 2102 935-0 • Fax +49 21

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Mc-techgroup FA-1_2_3 bi Data sheet Bedienungsanleitung

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