ZR-1 Intelligent Oxygen Index Analyzer for Combustion Testing

Product Introduction

The ZR-1 Intelligent Oxygen Index Analyzer is a specialized instrument for evaluating the combustion characteristics of non-metallic materials by determining the minimum oxygen concentration required to sustain combustion under specified test conditions. The result is expressed as the oxygen concentration, in volume percentage, in an oxygen-nitrogen mixture.

Designed for laboratory testing and material performance evaluation, the ZR-1 features an intelligent control system, a large LCD display, imported oxygen sensing technology, and a gas diffusion system designed to improve gas mixing uniformity. Its adjustable oxygen concentration range of 0–100%, 0.1% resolution, and response time of less than 5 seconds support convenient oxygen index testing.

The instrument is suitable for testing plastics, rubber, textiles, fibers, wood, thermal insulation materials, and other applicable non-metallic materials. It is equipped with two glass cylinders, two igniters, and two sets of sample holders to support different test requirements and improve laboratory workflow.

Performance Features

1. Intelligent Control System: Independently developed control technology supports stable operation without requiring routine adjustment of multiple setting parameters.

2.  Wide Oxygen Concentration Range: Adjustable oxygen concentration from 0 to 100%, with a resolution of 0.1%.

3.  Imported Oxygen Sensor: Uses a specialized oxygen sensor supplied by CITY Technology in the UK to support accurate oxygen concentration measurement.

4.  Fast Sensor Response: Specified response time of less than 5 seconds.

5. Uniform Gas Diffusion: A dedicated gas diffusion system is designed to improve the distribution and mixing of oxygen and nitrogen.

6. Large LCD Display: A large graphical display makes test conditions and operating information easier to observe.

7.  Tilt-Meter-Based Indication: The instrument uses a tilt-meter design instead of a conventional glass rotameter, supporting convenient adjustment and observation.

8. Insulating ABS Enclosure: The patented ABS refractory enclosure is designed to reduce interference associated with static electricity or electrical leakage compared with conventional metal enclosures.

9. Pull-Out Operating Platform: The embedded sliding platform improves space utilization and makes sample handling more convenient.

10.  Convenient Calibration: Supports calibration using air at a known oxygen concentration.

11. Dual Sample-Holding Configuration: Includes two sets of sample holders to accommodate different testing requirements.

12. Continuous Test Preparation: Two glass cylinders and two igniters are supplied to facilitate preparation for successive tests.

Working Principle

The ZR-1 Intelligent Oxygen Index Analyzer determines the limiting oxygen index (LOI) of a material by measuring the minimum oxygen concentration in an oxygen-nitrogen mixture that will sustain combustion under specified test conditions.

A prepared specimen is positioned in the combustion tube. Oxygen and nitrogen are supplied and mixed to establish the required oxygen concentration. The specimen is then ignited according to the applicable test procedure, and its combustion behavior is observed.

By adjusting the oxygen concentration and evaluating whether combustion is sustained, the operator determines the limiting oxygen concentration. The result is generally expressed as the volume percentage of oxygen in the test gas mixture.

The ZR-1's oxygen sensor, gas adjustment system, and intelligent control system support concentration setting and monitoring during testing. Correct specimen preparation, gas supply, ignition procedure, and test conditions are essential for reliable results.

Technical Parameters

Note: Confirm the applicable test standard, specimen dimensions, gas flow requirements, and calibration procedure with the manufacturer before testing.

Application Scenarios

The ZR-1 oxygen index analyzer is suitable for combustion performance evaluation and material quality testing across multiple industries.

•  Plastics Industry: Evaluating the limiting oxygen index of plastic materials and molded components.

•  Rubber Industry: Assessing the combustion characteristics of rubber products and compounds.

• Textile Industry: Testing fibers, fabrics, and other textile materials for combustion behavior.

•   Wood and Wood-Based Materials: Evaluating the oxygen index of wood and suitable wood-based products.

• Thermal Insulation Materials: Testing applicable insulation materials and related products used in buildings and industrial equipment.

• Material Research Laboratories: Supporting formulation development, material comparison, and combustion behavior research.

•  Quality Control and Inspection: Providing oxygen index test data for material evaluation and product quality management.

ZR-1 vs. Conventional Oxygen Index Testers

This comparison describes design and configuration differences. Actual performance should be assessed using verified specifications and the applicable testing standard.

Frequently Asked Questions (FAQ)

1. What does the ZR-1 Intelligent Oxygen Index Analyzer measure?

It determines the minimum oxygen concentration required to sustain combustion in a non-metallic material under specified test conditions. The result is expressed as a volume percentage of oxygen.

2. What is the oxygen concentration range of the ZR-1?

The oxygen concentration adjustment range is 0–100%, with a resolution of 0.1%.

3. Which materials can be tested using the ZR-1?

Applicable materials include plastics, rubber, textiles, fibers, wood, thermal insulation materials, and other suitable non-metallic specimens.

4. How quickly does the oxygen sensor respond?

The specified sensor response time is less than 5 seconds.

5. What gases are required for operation?

The instrument requires industrial-grade oxygen and nitrogen. The gas supply is provided by the customer, and the working pressure is specified as 0.1–0.3 MPa.

6. What is the size of the combustion tube?

The combustion tube is made of quartz glass, with an inner diameter of 95 mm and a total height of 450 mm.

7. Does the ZR-1 support calibration?

Yes. The instrument supports calibration using air with a known oxygen concentration. Calibration should be performed according to the manufacturer's instructions and the applicable test method.

8. What accessories are included?

The stated configuration includes two glass cylinders, two igniters, and two sets of sample holders. Confirm the complete accessory list when ordering.

9. What power supply does the ZR-1 require?

It operates on AC 220 V at 50 Hz, with a specified power consumption of 50 W.