Introduction
Carbon residue is a test parameter used to characterize the tendency of petroleum products, such as fuels, lubricating oils, and crude oils, to form carbonaceous deposits when subjected to high temperatures, and it is measured with instruments such as the Conradson carbon residue tester and the micro carbon residue tester, which are used in petroleum testing laboratories. In the carbon residue test, a weighed sample is subjected to controlled heating and destructive distillation in the absence of air, and the carbonaceous residue remaining after the test is weighed and expressed as a percentage of the original sample; the Conradson method (ASTM D189) uses a larger sample and a specific heating procedure, while the micro method (ASTM D4530) uses a smaller sample and a controlled temperature, providing comparable results, and the carbon residue value indicates the tendency of the product to form coke and deposits in engines, injectors, and processing equipment. Carbon residue testing is used for characterizing and grading fuels, for predicting the deposit-forming tendency of lubricating oils, for quality control of diesel fuels and heavy fuel oils, for evaluating base oils, for monitoring refining processes, and for research, and carbon residue testers are used in refineries, petroleum testing laboratories, fuel quality control facilities, and research institutions, and they are available as manual and automated instruments, with features such as precise temperature control and reproducible heating. With its importance in assessing deposit formation, carbon residue testing is an essential analysis in the petroleum industry.
Micro Carbon Residue Tester LRCT-T2010
Micro Carbon Residue Tester determines carbon residue content at temperature range of 300°C to 500°C. Its precise calibration enhances accuracy, ensuring reliable test results. Equippe...
Carbon Residue Tester LRCT-T2011
Carbon Residue Tester is designed to measure the amount of carbon residue left after the combustion of petroleum products. This reliable unit is made up of stainless steel, resistant to ...
Carbon Residue Tester (Ramsbottom) LRCT-T2020
Carbon Residue Tester (Rams bottom) is used to determine the carbon residue of sample which provides an indication of the deposit-forming tendencies of fuels. It inserts up to five sampl...
Carbon Residue Tester (CONRADSON METHODS) LRCT-T2010
Carbon Residue Tester (Conradson Method) is equipped with advanced a 30 ml porcelain crucible. Features an iron wire fire bridge on top that serves as the maximum height indicator. It in...
Standards
ASTM D524-Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products
ASTM D4530-Standard Test Method for Determination of Carbon Residue (Micro Method)
Complies with the above standards, but is not limited to them.
Features
1. Carbon residue tester for measuring carbon residue content of petroleum products.
2. Conradson or Ramsbottom method for determining coke-forming tendency.
3. Suitable for petroleum refineries, lubricant laboratories, fuel testing and quality control.
4. Includes crucible, heating apparatus, temperature control and operation manual.
5. Determines carbon residue affecting engine performance and fuel quality.
FAQ
Q1: What testing scenarios is this tester mainly applied to?
A: The carbon residue tester is used in petroleum refineries, lubricant laboratories, fuel quality control, shipping, power generation and research institutions to measure the carbon residue content of petroleum products, lubricating oils, fuels and other hydrocarbons using the Conradson or Ramsbottom method. It supports petroleum product specification testing, lubricant quality and deposit-forming tendency assessment, fuel oil quality evaluation, residual fuel oil testing, engine and burner fuel quality assessment, and regulatory compliance testing. The carbon residue value indicates the tendency of a fuel or oil to form carbonaceous deposits during combustion or evaporation, affecting engine performance, injector fouling and equipment maintenance. It is essential for petroleum refineries, lubricant laboratories, fuel testing and industrial facilities requiring carbon residue measurement for product specification, quality control, engine performance assessment, regulatory compliance and research, where carbon residue is a critical quality parameter indicating the coke-forming tendency of petroleum products, affecting engine deposits, burner performance, equipment maintenance and product classification in petroleum, lubricant and fuel industries requiring standardized carbon residue testing per ASTM, ISO and industry specifications.
Q2: What standards does the tester comply with?
A: The carbon residue tester follows ASTM D189 for Conradson carbon residue, ASTM D524 for Ramsbottom carbon residue, ISO 6615, ISO 4262, and relevant GB/T standards including GB/T 268 for petroleum products. The apparatus dimensions, heating conditions and sample quantity follow the standard specification. The instrument complies with relevant laboratory safety standards including fire safety. Temperature and timing should be verified for compliant testing.
Q3: What is the warranty period for the whole machine and key components?
A: The whole tester is covered by a 12-month warranty. The heating system, crucibles, controller and apparatus are covered, while crucibles, igniters, thermometers and fuses are consumables or accessories. Damage from improper use, fire exposure or unauthorized repair is excluded. Extended service contracts are available for petroleum testing equipment.
Q4: Is this device difficult to operate? Is professional training required?
A: Operation requires trained petroleum laboratory personnel familiar with carbon residue test methods and fire safety. We provide operation manuals, training and application support. Proper sample quantity, heating rate, ignition technique, timing and result calculation are important for accurate carbon residue results and safe operation.
Q5: What is the typical lead-time for order delivery?
A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.
Q6: Is regular calibration required? What is the recommended calibration cycle?
A: Temperature calibration against a reference thermometer recommended every 6-12 months. Apparatus dimensions verified per standard. Heating rate and timing verification periodically. Crucible condition and weight verified. Full apparatus verification recommended for accredited laboratories. Routine cleaning of apparatus after each use.
Q7: Are supporting consumables universal?
A: Crucibles, igniters, thermometers and gas are available from laboratory suppliers, though dimensions should match the standard method. Long-term consumable cost is low.
Q8: Can I customize parameters or supporting accessories?
A: Customization includes method type (Conradson, Ramsbottom, Micro), automation level, number of positions, temperature control and data output. Additional crucibles and accessories can be ordered separately. Custom orders extend delivery lead-time.
Q9: Does the purchase include on-site installation and commissioning service?
A: Standard delivery includes the carbon residue tester and accessories with an operation manual. On-site installation, calibration and training are not included for standard orders but can be arranged for quality control laboratory setup. Remote guidance is provided.
Q10: What types of samples are compatible with this equipment?
A: The carbon residue tester measures carbon residue of petroleum products, lubricating oils, residual fuels and other hydrocarbon products within the method range and sample specification. Very volatile products may require special handling or the micro method. Samples should be representative and properly stored. Users should follow the specific test method (Conradson or Ramsbottom) including proper sample quantity, controlled heating rate, ignition of vapors, coking period, cooling and weighing, use clean, pre-weighed crucibles, ensure proper ventilation and fire safety for flammable vapors, and report results as percentage mass of carbon residue. The test should be performed in a fume hood or well-ventilated area with fire safety equipment available due to the flammable nature of samples and vapors. Results should be reported with the test method specified for comparison.
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