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Step 11: Once the experiment is finished, generate and download a report in the report menu
of the software. Turn off the thermostatic water bath and the motors, including the motor
controller. Next, unplug the power adapters (for the Motor Controller and the Gas Volume
Measuring Device) from the power source. Disconnect the tubing and remove the lids from
the reactors and CO
remove after the experiments, since they sit very tightly after usage, specially the tubing to
the different connectors. AMPTS III is equipped with a bottle/tube opening tool to easily
remove lids and tubing without the risk of damaging them and the connectors.
The AMPTS III and AMPTS III Light DUO was designed to increase the testing capacity for
double gas measurements. This configuration consists of two BPC Core AMPTS Units, where
users can measure the total gas (e.g., CH
samples simultaneously (Figure 11).
The system operates based on three different stages:
-
Stage
: The accumulated gas volume and flow rate generated by the anaerobic
digestion process (CH
measured by the first BPC Core AMPTS Unit.
-
Stage
: Carbon dioxide is removed using a 3 mol/L NaOH solution (selective
absorption). In this case, only a single gas component will be measured by the second
detection unit.
-
Stage
: CH
The average gas composition can be backcalculated and plotted at any time during the test.
removal bottles after the tests. These components are often difficult to
2
Chapter 05: AMPTS III and AMPTS III Light DUO
+ CO
) or dark fermentation process (H
4
2
or H
is collected and measured.
4
2
+ CO
) and a gas component (e.g., CH
4
2
) from 18
4
+ CO
) is continuously
2
2
20
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