Carbon and Sulphur Analyzer (Infrared) - Quali-CSA-3000G

Carbon and Sulphur Analyzer (Infrared) - Quali-CSA-3000G

QT-CS-3000G is a highly advanced infrared carbon and Sulphur analyzer which is equipped with two sets of sample pre-treatment units, the two treatment units are, resistance furnace and the high frequency induction furnace which share the same infrared detection system for analyzing the percentage of Sulphur and Carbon in combustion gases.

QT-CSA-3000G facilitates the detection of carbon and Sulphur in a wide range of specimens, such as steel, cast iron, alloy, metal ore, ceramics, cement, lime, rubber, coal, coke, refractory, carbide, graphite, oil, catalyst, soil and other solid materials. The option to select and switch between two furnaces makes it a very versatile instrument and therefore can be used to analyze the Carbon and Sulphur contents of a wide range of materials with high precision.

QT-CSA-3000G standard configuration is equipped with three separate infrared absorption cells housed in three physical channels, two carbon channels and one sulfur channel, same can be configured with four independent infrared absorption cells with four physical channels, two for carbon detection and two for sulfur detection based on application and sample material under consideration.


  • Equipped with advanced pyro-electric solid-state infrared detector combined with anti-oxidation infrared light source for correct and precise measurement.
  • The entire testing chamber is thermostatically controlled for linear temperature rise and ensure constant analysis temperature for stabilized accuracy of detection.
  • Stable and linear treatment of sample to eliminate the data variation.
  • Flexible temperature settings with automatic control to test wide range of materials.
  • Supports full automatic and manual mode operation.
  • Advanced electronic flow control technology to control flow of oxidizing gas and respective adjustment with infrared detector and signals.
  • Automatic cleaning of gas channels to ensure accurate test data for each test.
  • Highly reliable electronic components with multiple safety circuit protections against meltdown.
  • Specially designed gas channel isolating mechanism to achieve zero dead volume
  • High quality gas channel with zero dead volume.
  • Infrared absorption technology enables quick analysis of carbon and sulphur content in solid inorganics.
  • Self-diagnostic functions which includes monitoring and adjustment of infrared signals, air line valve positioning and flow control, auto leakage check, etc.
  • Automatic switching among high-carbon channel, low-carbon channel and sulfur channel.

Software Functions

  • Unique and user friendly software to control and conduct test and interpret test data;
  • Quick display of analytical results & curves and auto storage.
  • Data stored can be sorted in multiple ways, such as by date or specimen ID.
  • The statistical analysis of test data to compare test results, identify mean, standard deviation, relative deviation for deferent samples

Operation & Working Principle

The operating principle involves heating of the sample in Oxygen rich environment to oxidize Carbon and Sulfur content of sample material to generate Carbon Monoxide (CO), Carbon Dioxide (CO2) and Sulfur Dioxide (SO2) respectively. These gases are then passed through detection cells to measure content of Carbon and Sulfur. The measured data are compared with the mass of sample to identify content of respective elements in sample. The residual gas is finally discharged out.

The analytical results of carbon and Sulfur content will be displayed in mass percentage of Carbon (%C) and Sulfur (%S) in the sample material, and is automatically stored.

The selection of the treatment furnace (resistance furnace or an induction furnace) is governed by the test requirements and characteristics of the sample material.

Technical Specifications


High Frequency Induction Furnace

Tubular Resistance Furnace

Measuring Range:

Low Carbon: 0.0001% ~ 0.2%,

High Carbon: up to 6%,

Low Sulfur: 0.0001% ~ 0.3%

High Sulfur: 0.3% ~ 30%

Carbon: 0 ~ 100%,

Sulfur: 0 ~ 100%

The number of detection cells and sizes to be determined in accordance with the content of carbon and sulfur in specimens.


Carbon and Sulfur: 0.01ppm


LC: 1 ppm or RSD ≤ 1%,

HC : RSD ≤ 0.5%,

LS: 1.5 ppm or RSD ≤ 1.5%

LC: ±4 ppm or 1%,

HC: 0.5%,

LS: ±4 ppm or 1.5%

Analysis Time:

40 ~ 60 seconds

150 ~ 300 seconds

Specimen Weight:

100 mg ~ 500 mg

400 mg

Resolution of the Electronic Balance: 0.1 mg


18 MHz, Max. 2.7 KVA

Temperature: 1550 °C (Max.),

Power Supply: 230 V ac ± 10%, 50/60 Hz, 20A

Power Supply Analyzer

230VAC ±10%, 50/60Hz, 16A

Carrier Gas

3 L/min (Oxygen 99.5%)

Chemical Reagent

Magnesium perchlorate (CO2 absorbent)


100 kg

30 kg

Furnace Size


330 mm x 520 mm x 600 mm

Analyzer Size

550 mm x 800 mm x 600 mm


For more information about Carbon and Sulphur Analyzer (Infrared), please call us at 1.877.884.8378 or Click the button below.