
Motorola Explosion-Proof Radio:
Ideal for safety and reliability
What is explosion-proof?
Explosion protection refers to techniques and measures to prevent explosions or to protect people and equipment from the effects of explosions when they occur. This is particularly important in the presence of flammable gases, dust or flammable liquids in the environment, such as chemical plants, oil depots, coal mines and so on. The purpose of explosion protection is to reduce the risk and likelihood of an explosion and to minimize the damage caused by an unavoidable explosion when it occurs.
How to choose
Identification of Hazardous Area Classification: Understand the specific hazardous environments (e.g., gases, vapors, dust) and the classification of zones in which the radios will be used (e.g., Zone 0, Zone 1, Zone 2).
Check the certification label: Verify the certification label of the equipment to ensure that it meets the safety standards of the relevant industry.
Evaluate environmental conditions: Consider environmental conditions such as temperature, humidity, and chemical exposure, and select equipment that can withstand these factors.
Assessment of communication needs: Determine the communication range, number of channels, and the need for additional features such as GPS or emergency alerts.
Applications
- automobile gas station
- Oil refineries,
- Drilling rigs and processing plants
- Chemical plant
- Printing industry (paper and textiles)
- Aircraft refueling stations and hangars
- Surface Coating Industry
- Sewage Treatment Plant
- Natural gas pipelines and distribution centers
- Food handling and storage operations
- Carpentry Area
- Metal surface grinding operations, especially aluminum powder and particles
Explosion Proof Certificates




The IECEx / ATEX standards use symbols and alphanumeric codes to classify different types of hazardous (explosive) conditions and define the likelihood of an explosion under these conditions.
The UL Explosion Proof Certification is issued by the Underwriters Laboratories (UL) organization in the U.S. It ensures that products meet the standards for use in hazardous locations and is generally applicable to the U.S. market, while the TIA Explosion Proof Standard is developed by the Telecommunications Industry Association (TIA) and is primarily intended for telecommunications equipment used in explosive atmospheres. Both standards use symbols and alphanumeric codes to guide the classification and use of products to ensure safety and suitability for use in hazardous locations.
Hazardous Area Classification Comparison Table
National Electric Code (NEC) / IEC / JIS Classification Reference
This Technical Comparison Table has been compiled by Commutronics to provide a reference for defining areas and categorizing groups of substances for international explosion protection standards.
Area Classification and Definition of Hazardous Areas
| Type of substance | Environmental Characteristics (Occurrence) | United States NEC 500 | Europe IEC / International |
|---|---|---|---|
| CLASS I Gas/Vapor |
Continuous. Long-term presence | Division 1 | Zone 0 |
| Normal. probable | Division 1 | Zone 1 | |
| Abnormal. Abnormal Occurrence | Division 2 | Zone 2 | |
| CLASS II Flammable Dust |
Continuous. Long-term presence | Division 1 | Zone 20 |
| Normal. probable | Division 1 | Zone 21 | |
| Abnormal. Abnormal Occurrence | Division 2 | Zone 22 |
Material Groups
| Category | Substances represented | NEC | IEC | JIS Explosion Level |
|---|---|---|---|---|
| GAS | Acetylene | Group A | IIC | Grade 3 (3c) |
| Hydrogen / Carbon disulfide | Group B | IIC | Level 3 | |
| Ethylene | Group C | IIB | Level 2 | |
| Propane / Alcohol | Group D | IIA | Level 1 |
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