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Checking for gas-tightness, Use of the temperature controller, Display and function keys – M&C TechGroup CG-2H-W_-2MH-W Operator's manual User Manual

Page 24

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24

Gas sampling and conditioning technology

9-0.2-ME

When replacing the outside seals, they have to be pushed over the adapter into the appropriate seal
groove.

The inside seals are to be mounted as follows:

Lay the seal in the adapter aperture;

Push the O-ring into the appropriate seal groove using a blunt instrument.

N O T E !

Take care when re-mounting the O-ring seals:
Do not damage the O-rings and take care that they are correctly
positioned !


17.3

CHECKING FOR GAS-TIGHTNESS

Connect device to mains supply;

Set temperature controller to ambient temperature;

N O T E !

The converter must be cooled down to room temperature in order to check
for gas-tightness !

Switch sample gas path to catalyst operation (lower green LED lights up);

Seal sample gas outlet tightly;

Connect sample gas outlet with U-tube manometer or similar for 0,6 bar and upstream stopcock;

Release air using the stopcock until the manometer displays a pressure of approximately 0.5 bar;

N O T E !

Do not exceed the maximum operating pressure of 2 bar absolute !

Close stopcock;


A pressure drop of 0,01 bar in 5 minutes is acceptable.






18

USE OF THE TEMPERATURE CONTROLLER

18.1

DISPLAY AND FUNCTION KEYS

 Process value display, red

3

2 9 9 . 5

300.00

2

1

PGM

EXIT