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Consider the type of samples to be tested, required calorific value range, testing frequency, level of automation, testing time, oxygen filling method, measurement performance, and laboratory workflow. The appropriate model should match the requirements of the intended testing procedure.
A measured sample is combusted in a sealed oxygen filled bomb. The heat released during combustion causes a temperature change in the surrounding calorimetric system, which is used to calculate the sample's calorific value.
Depending on the model and applicable test method, suitable combustible materials can include coal, biomass, biofuels, petroleum products, food materials, and waste derived fuels. Sample suitability should be confirmed before testing.
Gross calorific value represents the total heat released when a sample is completely combusted and the water produced during combustion is condensed. Net calorific value accounts for the heat that would remain unavailable when that water stays as vapor. The applicable reporting basis depends on the test method and calculation procedure.
The bomb requires a controlled oxygen atmosphere for combustion. Labmate models are available with automatic or semi automatic oxygen filling, depending on the configuration. The appropriate oxygen filling system should be selected according to the required testing workflow.
Testing time varies by model. For example, the LMABC B100 specifies an analysis time of less than 8 to 10 minutes, while the LMABC A100 and A101 specify approximately 15 minutes and the LMABC B101 specifies 15 to 25 minutes.
Sample preparation, sample mass, moisture content, homogeneity, oxygen conditions, ignition, combustion completeness, calibration, temperature measurement, and the condition of the combustion vessel can affect results. Following the applicable test procedure helps maintain consistent measurements.
Automated functions can reduce manual steps involved in processes such as oxygen filling, ignition, water handling, and data recording. The specific automation level depends on the selected Labmate model.
Calibration generally involves determining or verifying the calorimeter's heat capacity using an appropriate reference material and following the applicable test procedure. Calibration frequency and acceptance criteria should follow the manufacturer's instructions and the laboratory's quality requirements.
Routine maintenance may include cleaning the combustion vessel and chamber, inspecting seals and ignition components, checking oxygen connections, removing combustion residues, and performing required calibration or performance checks. Maintenance should follow the procedure specified for the selected model.
Yes. Labmate identifies biomass and fuel analysis among the applications of its Automatic Bomb Calorimeter range. The selected model and test procedure should be appropriate for the specific biomass or biofuel sample.
Yes. Calorific value testing can be used to evaluate suitable waste derived fuels and support waste to energy research. Sample composition, preparation, safety, and the applicable test procedure should be considered before testing.
The listed Labmate Automatic Bomb Calorimeter models use an Isoperibol calorimeter configuration. Model specific operating functions and performance specifications vary across the range.
Use consistent sample preparation, appropriate sample mass, correct oxygen conditions, proper calibration, complete combustion, and the recommended operating procedure. Regular cleaning and inspection of the combustion system also help maintain consistent testing performance.
Choose the model based on the sample types, required measurement range, testing frequency, desired automation, testing time, oxygen filling method, measurement performance, and laboratory workflow. Labmate offers different configurations, so the model should be matched to the actual testing requirements.