M&C TechGroup FM-200K-H_FA Operator's manual - Manual (Page 9)

9
Gas sampling and gas conditioning technology 5-6.5.1-ME
11 APPLICATIONS
The M&C flowmeters FM-2K and FM-200K-H(/FA) are used in analysis technique to control gas flow
up to an operating temperature of 180 °C.
Depending on the flowmeter glass tube, ranges from 16 l/h to 800 l/h can be realized.
12 DESCRIPTION
The M&C flowmeters FM-2K and FM-200K-H(/FA) consist of a vertical cone shaped glass tube with a
free movable float ball inside. The sample gas, flowing from the bottom to the top, lifts the float ball as
far as an annular gap appears between the tube wall and the float ball and the forces on the ball are
compensated. The position of the float ball is related to a scale on the flow meter tube. The FM-2K is a
basic heat resistant version for installation in heated systems.
The electrically heated version FM-200K-H(/FA) is equipped with an integrated needle valve and is
fixed on a mounting plate, decoupled from heat and covered with an insulated enclosure. The heater
consists of a heating element with high capacity. The temperature is adjustable on the integrated
thermostat up to 180 °C with high temperature limiter and low temperature alarm.
The window of the heat insulated enclosure guarantees a proper reading-out.
The electrical connection box with integrated thermostat is installed outside the enclosure on the
mounting plate. A flow control is possible consisting of fibre-optical light guides FO1, the sensor head
FA2-H and the pre-amplifier K-FA-H which is installed on the mounting plate as well. The electronic
controller FA... (option) has to be mounted externally.
– See data sheet 5-6.10.2. –
In order to avoid cold spots, the connecting fittings are equally heated by means of double-ended
thermal conducting jaws. The electrically heated sample lines type 3/4/5-N/M/H
– see data sheet 2-6.1
– are fixed with mounting brackets.
Part numbers:
09F2105
FM-2K heatable up to 180°C
09F2505 FM-200K-H el. heated up to 180°C with needle valve
09F2555 FM-200K-H/FA heated, with needle valve and flow control