Connecting Or Replacing Gas Cylinders - Sony Multiscan CPD-1304S Service Manual

Transport, storage, installation
Connecting steps process gas sample line
Make sure that there is a shut-off valve* in the process gas sample probe or the pipe
system you want to connect to the Q2. Check that this shut-off valve is closed. A suitable
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1.
pressure regulator* may be required as well. If a pressure regulator* is present, turn the
regulator to its lowest setting.
Connect the process gas sampling with the pipe system.
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2.
Do not connect the Q2 yet!
Carefully open the shut-off device valve of the pipe so that a permissible flow of gas is
generated which is above the operating conditions. Then purge for about 30 seconds** to
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3. clean the process gas sampling line. Vent the gas at the end of the line using a hose to
ensure proper safe exhaust. Check if the pressure and other parameters will fit before
doing so.
Then close the line shut-off device and restore the previous settings!
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4.
The exact pressure will be adjusted later, after connection of the Q2
The process gas sample line is now ready for connection to Q2.  see chapter 5.3.6
5.
Prevent the ingress of dirt and moisture if the connection is not made immediately
(*not part of device and delivery; make sure to use a type that meet the specifications and standards)
** If long lines are used extend this time

5.3.4 Connecting or replacing gas cylinders

A regular automatic calibration / adjustment with an operational calibration gas is required for the
proper operation of the Q2. A Gas cylinder with a CH4+CO2 mixture is required. The cylinder
should be replaced as soon as the outlet pressure can not be kept stable anymore. Depending
on the regulator this will normally occur around 0.5MPa. The pressure should in particular be
monitored using a pressure gauge or contact pressure gauge, for example. For more options, and
details of calibration gas mixture, please contact Elster GmbH.
Some situations make it nessesary to conneckt additional gas cylinders to the device, e.g. to
repeat the basic or service calibration (done by Elster staff) or for verification purposes. This work
must be carried out according to the steps described herein.
Always follow the steps of the cylinder change in compliance with local
regulations analog to the work steps in the operating instructions. Failure
to comply may result in substantial damage to the device or the station.
A suitable pressure reduction is required to connect a gas cylinder to the
calibration gas inlet of the Q2. Elster GmbH offers prefabricated panels
with high pressure reductions for this purpose
Steps to connect the gas cylinder
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1. Secure the cylinder against tilting over.
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2. Unscrew the protective cap from the cylinder
Make sure that the main valve on the cylinder is closed.
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3.
If this is the case, remove the screw cap (plug) from the valve connection.
GasLab Q2 G a s Q u a l i t y A n a l y z e r
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