Continuous Direct BTU, Wobbe Index, Heating Value, CARI Calorimeter
A Rugged & reliable CALORIMETER
Our COSA XENTAUR™ 9610CXc™ continuous calorimeter measures Wobbe Index, BTU/Heating Value and CARI (Combustion Air Requirement Index). Key advantages of this calorimeter are its insensitivity to changes in ambient temperature, a very fast response with the ability to measure gases with BTU values down to zero and the measurement of the Combustion Air Requirement Index besides Wobbe Index and Heating Value. Using our 9610CXc calorimeter continuous gas analyzers with expert design make BTU analysis a definitive money saving tool!
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RESIDUAL OXYGEN MEASUREMENT
Our 9610CXc calorimeter Wobbe Index measurement is based on the analysis of the oxygen content in the flue gas after combustion of the sample. A continuous gas sample is mixed with dry air at a precisely maintained constant ration, which depends on the BTU range of the gas to be measured. The fuel air mixture is oxidized in a combustion furnace in the presence of a catalyst at 800°C, and the oxygen concentration of the combusted sample is measured by a zirconia oxide cell.
Some of the benefits of using the 9610CXc calorimeter include:
- High Accuracy: Provides highly accurate results for measuring the calorific value of fuels, with a precision of +/-0.2%.
- Wide Measurement Range: Has a wide measurement range, making it suitable for measuring the heating value of various liquid and gaseous fuels.
- Fast Response Time: Has a fast response time, providing results within minutes, making it suitable for real-time monitoring and control of fuel quality. T90 it 5 seconds.
- Low Sample Volume: Requires a small sample volume, which reduces the amount of fuel required for testing and minimizes waste.
- Easy to Operate: Easy to operate, with a user-friendly interface and intuitive controls.
- Durable: Made of high-quality materials and is designed for durability and long-term use.
- SCC at 50°C and 100°C
- Bypass stream to flare
- Furnace at 800°C
- O2 Cell in furnace
- SG Cell required for BTU
- 20+ years pf proven reliability
- Standing mount included
- Large cabinet area ease of maintenance
- Global service and repairs
- Optional SG Cell for BTU measurement
- Certified C1D2, ATEX, IeCX, CE
The 9610CXc calorimeter is a specialized instrument used to measure the heat value of a wide range of gas mixtures. It is commonly used in the natural gas industry for quality control purposes and to ensure the safety of gas-fired appliances.
Some of the applications include:
- Energy Monitoring and Efficiency Testing: Used to measure the heat content of various gas mixtures, making it an essential tool for energy monitoring and efficiency testing. By accurately measuring the heat value of different gas mixtures, it is possible to optimize combustion processes and improve energy efficiency.
- Gas Quality Control: Used in natural gas processing plants to ensure that the gas being produced meets the required heating value. By continuously monitoring the heat value of the gas, the instrument can detect any changes in gas composition and help operators adjust the process accordingly.
- Safety Monitoring: Used to monitor the safety of gas-fired appliances. By measuring the heat value of the gas being supplied to the appliance, it is possible to detect any abnormalities that could lead to inefficient or incomplete combustion, which could result in the production of carbon monoxide and other harmful gases.
- Emissions Monitoring: Used to monitor emissions from gas-fired appliances. By accurately measuring the heat value of the gas being combusted, it is possible to determine the efficiency of the combustion process and the amount of pollutants being released into the environment.
Measurement Principle (Residual Oxygen Measurement)
The COSA 9610CXc BTU Calorimeter uses the measuring principle based on the analysis of the residual oxygen content in fuel or flare gas after combustion of the sample. A continuous gas sample is mixed with dry air at a precisely maintained constant ratio, which depends on the BTU range of the gas to be measured. The fuel air mixture is oxidized in a combustion furnace in the presence of a catalyst at 800°C, and the oxygen concentration of the combusted sample is measured by a zirconia oxide cell. The residual oxygen provides an accurate measurement for the Combustion Air Requirement of the sample gas, which can be correlated accurately to the Wobbe Index of the gas.
The 9610CXc continuous calorimeter is used in various industries where accurate measurement of the calorific value of fuels and combustibles is required. Some of the industries that use this type of calorimeter include:
- Natural Gas: Used in the natural gas industry to measure the heating value of natural gas for billing and quality control purposes.
- Refineries: Used in refineries to measure the calorific value of fuels and feedstocks for process control and optimization.
- Power Generation: Used in the power generation industry to measure the heating value of coal, oil, and other fuels used in boilers and turbines.
- Biogas: Used in the biogas industry to measure the heating value of biogas produced from organic waste.
- Chemicals: Used in the chemicals industry to measure the calorific value of fuels and feedstocks used in chemical processes.
Wobbe measurement vs CARI measurement
Wobbe Index and CARI (Combustion Air Requirement Index) are two different measurements used in the natural gas industry to determine the quality of natural gas.
The Wobbe Index is a measure of the interchangeability of fuel gases and is defined as the heating value of the gas per unit volume divided by the square root of the specific gravity of the gas. The Wobbe Index is used to ensure that the natural gas being supplied to a customer meets the required heating value. Natural gas appliances are designed to operate within a specific Wobbe Index range, and if the gas supplied to an appliance is outside that range, it can result in inefficient combustion, incomplete combustion, and potentially dangerous conditions.
On the other hand, CARI is a measure of the combustion air requirement of natural gas. It is a method used to determine the amount of air required to completely combust a given volume of natural gas. The CARI measurement is important because incomplete combustion of natural gas can lead to the formation of carbon monoxide, which is a poisonous gas.
While the Wobbe Index and CARI both measure different properties of natural gas, they are related. If the Wobbe Index of natural gas is too high or too low, it can affect the CARI measurement, which can result in incomplete combustion of the gas. Therefore, it is important to ensure that the natural gas being supplied meets both the Wobbe Index and CARI requirements.