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CHN ANALYSER

CHN Analyzer is a proven instrument which can determine the elemental concentrations in Organic and other type of materials given sample. It has the capability of handling a wide variety of sample types in the field of pharmaceuticals, polymers, chemicals, environmental and energy, including solids, liquids, volatile and viscous samples It is used to measure Carbon (C), Hydrogen (H) and Nitrogen (N). Sample sizes may differ depending on system, but most often in around a few mg. For some sample matrices larger mass is preferred due to sample heterogenicity.

This instrument uses classical Pregl-Dumas method of combustion in a pure oxygen environment to oxidize the sample into simple compounds which are then detected with thermal conductivity detection and infrared spectroscopy. Separation of interference is done by chemical reagents. The design has been field-proven in thousands of laboratories around the world. High-speed microprocessor control, solid-state components and built-in diagnostics provide confidence in performance and reliability
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Key Features

  • Tests 30 samples at one time, the instrument can automatically send samples, fall samples, experiment, test cycle, may increase or decrease and replace the sample at any time during the analysis.
  • Using PID temperature control, furnace temperature control accuracy can reach ± 1°C, thermostatic chamber and air storage tank temperature control accuracy can reach ± 0.1°C.
  • Use absolute pressure sensor for monitoring the whole gas line pressure of the instrument, automatic air tightness check to the whole gas line and furnace, infrared pool, thermal conductivity pool and air storage tank.
  • The instrument uses ultra-low drift infrared pool and thermal conductivity pool as the core component of elemental analysis, so that the experimental results are more accurate.
  • With unique airtightness detection device, can detect the tightness of the gas line in sections under the program control, determine the failure to a specific range. Convenient for gas line maintenance.

Technical Specifications*

Model

CHNR-01

Measurement range

1. Cad: 50ppm or 0.005%-100%
2. Had: 200ppm or 0.02%-50%
3. Nad: 80ppm or 0.008%-50%

Accuracy

1. Cad: 0.5%
2. Had: 0.15%
Nad: 0.08%

Single sample analysis time

6-7min

Sample weighing

Recommended: 100-120mg

Test method

1. Cad: Optimized for low noise, non-dispersive infrared absorption method
2. Had: Optimized for low noise, non-dispersive infrared absorption method
3. Nad: Optimized for low drift, thermal conductivity detection method

Gas specifications required by experiments

1. Carrier gas: helium, purity higher than 99.996%, 0.25 ± 0.01MPa
2. Assistant gas: oxygen, only when carbon and hydrogen measured, the purity higher than 99.50%, when measuring nitrogen, purity higher than 99.995%, 0.25 ± 0.01MPa
3. Power gas: compressed air or nitrogen, must be free of oil and water, 0.25 ± 0.01MPa

Furnace type

Resistance furnace, the maximum temperature 1050°C

Automatic sample-falling head

30 samples loaded at one time

Power supply

1. Detecting Power Supply: AC220V ± 22V, 50Hz, 2A
2. Heating unit: AC220V ± 22V, 50Hz, 20A

Host machine dimension (mm)

710×690×930

Host machine weight (kg)

120

Accessories

  • CHN5000 Host machine
  • Lenovo/HP computer (Optional)
  • Printer (Optional)


Advanced Automation and Efficiency

With automatic ash removal, calibration, and digital control, this CHN Analyzer ensures a highly streamlined workflow. Its sample throughputup to 60 analyses dailyguarantees efficient laboratory operations for busy research or industrial settings. Microprocessor control and Windows-based software integration enable seamless analysis, data management, and reporting.


Precision Measurement and Wide Applicability

Engineered to measure carbon, hydrogen, and nitrogen across vast concentration ranges (0.01%100%), this analyzer offers high sensitivity and 0.001 mg resolution. Versatile for various sample types and sizes, it excels in research, quality assurance, and production environments for accurate elemental quantification.


User-Friendly and Reliable Operation

Features such as easy-access design, minimal consumables, automatic safety mechanisms, and built-in diagnostic systems make operation and maintenance straightforward. The instruments robust construction ensures reliability while protecting users and samples, suitable for Indian laboratory conditions.

FAQs of CHN ANALYSER:


Q: How does the CHN Analyzer detect and quantify carbon, hydrogen, and nitrogen in samples?

A: The analyzer uses a high-temperature quartz tube combustion furnace to oxidize the sample, converting its elements into measurable gases. These gases are then detected by a thermal conductivity detector (TCD), which quantifies the concentrations of carbon, hydrogen, and nitrogen present.

Q: What software and data management features are included with this CHN Analyzer?

A: It is equipped with Windows-based control and data analysis software, offering user-friendly interfaces for automated operation, calibration, and reporting. Data can be stored in the built-in memory or exported via USB or RS232 interfaces for external backup or further analysis.

Q: When should the automatic calibration feature be used, and what are its benefits?

A: Automatic, multi-point calibration should be used before sample runs to ensure optimal accuracy and consistent results. This feature saves time, minimizes human error, and maintains precision throughout regular laboratory workflows.

Q: Where is this analyzer most effectively utilized?

A: The CHN Analyzer is ideally suited for laboratory sample analysis in research institutions, industrial quality control departments, and production facilities where accurate C, H, and N elemental analysis is required.

Q: What is the process for operating and maintaining this analyzer?

A: Operation involves loading samples (1500 mg each), initiating analysis through the user-friendly software, and reviewing real-time results. Maintenance is straightforward due to its easy-access design and minimal consumable requirements. Safety features such as over-temperature protection and leak detection contribute to hassle-free, secure operation.

Q: How does the automatic ash removal functionality enhance sample throughput?

A: The automatic ash removal mechanism streamlines sample preparation and analysis, reducing manual intervention between tests. This contributes to the instruments ability to process up to 60 samples per day, improving lab productivity.

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