M&C TechGroup FA-1-2-3 bi Datasheet

FA-1/2/3, bi

Embracing Challenge

Optical bi-stable ow alarm sensors
series FA®

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

Special Features

Easy mounting without dismounting the

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measuring glass

Also for very low ow quantities

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Also for non-metallic or very small oat-

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ing balls

Easy adjustment of any alarm set-point

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Application

The patented forked light-barrier FA-.., bi is
used in gas and water analysis for flow-mon­itoring 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 flowm­eters 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 pro­tected, high-intensity LED is mounted on the
left side as a light source and two photo­transistors 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 fibre­optic 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

M&C TechGroup Germany GmbH • Rehhecke 79 • 40885 Ratingen • Germany
[e-mail] • www.mc-techgroup.com • Fon [phone] • Fax [phone]

9.4

Attachment of flow monitor

FA-1,bi to flowmeter FM10

Optical bi-stable flow alarm sensors series FA

O.K.
Alarm

Technical Data

Flow alarm sensors type FA-1,bi FA-2,bi FA-3,bi

Part No. 02E1000 02E2000 02E3000

Measuring tube 5-14 mm 13-27 mm 26-55 mm

Dimensions W x D x H in mm 35 x 23 x 15 63 x 40 x 22 103 x 75 x 25

Weight 50 g 100 g 200 g

Operating temperature -25 °C to +60 °C

Storage temperature -25 °C to +70 °C

Electrical connection 3 m connection cable standard; 4.5 mm ø, 4 core (each additional meter of sensor connection cable = Part No:

02E9000, max. 10 meters) (>10 meters = with pre-amplifier K-FA.. max. 200 meters)

Mounting with clamping screw

Function bi-stable and mono-stable

Power supply voltage from FA.. electronic controller

Protection type IP65 EN 60529

Material aluminium-anodized, epoxy, PVC cable, semi-conductors

9.4

M&C TechGroup Germany GmbH • Rehhecke 79 • 40885 Ratingen • Germany
[e-mail] • www.mc-techgroup.com • Fon [phone] • Fax [phone]

Technical specications and illustrations are without
obligation, subject to modications. 09.96/11.06