Carbon dioxide (CO2)
With the switch from plastic to metal enclosures complete, we have taken a key step towards creating a more robust and reliable system designed to withstand the demands of a working farm environment. Moving on to the function of the system, each individual module plays a crucial role in capturing, controlling and analysing the gas samples.
The CDM is the home to the PLC, which is the controller for all components in the system. Represented on a touchscreen HMI, this displays triggering valves, speed of pumps and sensor values.
The CDM is the home to the PLC, which is the controller for all components in the system. Represented on a touchscreen HMI, this displays triggering valves, speed of pumps and sensor values.
SAM is designed to filter and capture the sample from the cow’s breath in a Tedlar bag, which can be held to be processed through the SEMs when ready.
SAM is designed to filter and capture the sample from the cow’s breath in a Tedlar bag, which can be held to be processed through the SEMs when ready.
SEM 1 has the Methane (CH4) and the Carbon Dioxide (CO2) sensor which are the two most important gases being measured in this project. This is connected to the SAM unit using polyurethane tubing which will pass the sample gas across the sensors by triggering valves and activating pumps.
SEM 1 has the Methane (CH4) and the Carbon Dioxide (CO2) sensor which are the two most important gases being measured in this project. This is connected to the SAM unit using polyurethane tubing which will pass the sample gas across the sensors by triggering valves and activating pumps.
SEM 2 is an extension of SEM 1 with a paramagnetic Oxygen (O2) sensor and an electrochemical cell Hydrogen (H2) sensor in series as an expansion module fit for this project specifically.
SEM 2 is an extension of SEM 1 with a paramagnetic Oxygen (O2) sensor and an electrochemical cell Hydrogen (H2) sensor in series as an expansion module fit for this project specifically.
The Ammonia (NH3) module takes a sample from the same point as the other two SEM’s but bypasses the bag using a heated sample line. This is to keep the ammonia captured at a high temperature and is immediately directed to the Ammonia converter.
The Ammonia (NH3) module takes a sample from the same point as the other two SEM’s but bypasses the bag using a heated sample line. This is to keep the ammonia captured at a high temperature and is immediately directed to the Ammonia converter.