Operating Manual
37
© Copyright 2016
OMBG3000 – Rev1
An additional ball valve should be incorporated in to each sample line
close to the BIOGAS 3000 system. This ball valve will be used to isolate
the gas supply to the system as part of pressure testing the system
during routine maintenance.
The sample tube should be connected to the bulkhead connectors
labelled ‘SAMPLE GAS 1’, ‘SAMPLE GAS 2’, ‘SAMPLE GAS 3’, and
‘SAMPLE GAS 4’ where applicable – see annotations 4, 5, 10, and 11 on
Figure 3 - BIOGAS 3000 customer connections
Note: The maximum distance the BIOGAS 3000 can be from the sample
point is 164 feet, (50 meters).
Process Return
4.4.2
This is the line where measured gas from the system is exhausted. It can be
returned to the process or vented to atmosphere.
Care should be taken in routing the process return line, especially in cold
environments. The process return line may need insulating or even trace
heating to prevent freezing of water within the pipe. This is not part of the
BIOGAS 3000 system and is the responsibility of the operator.
The gas exhaust line should be returned to a suitable location at the
required point. It is recommended that a valve be incorporated in the
assembly so that the gas can be shut off if the sample line is removed.
See
Figure 5 - Ball valve assembly
Warning
The gas being exhausted at this point of the system will
be flowing at approximately 300ml/min. If the sample
gas is being vented to atmosphere, it should be routed
to a safe and well-ventilated area.
An additional ball valve should be incorporated in to the piping close to
the BIOGAS 3000 system, even when being vented to atmosphere. This
ball valve will be used as part of pressure testing the system during
routine maintenance.