1. Product Research:

   - Start by researching manufacturers or suppliers that offer gas detection systems with the specified features, especially those designed for use in explosion-hazardous areas.

2. Contact Manufacturers or Suppliers:

   - Contact the manufacturers or suppliers you've identified and inquire about the availability of a gas detection system that meets your criteria. Clearly communicate your requirements and expectations for continuous flammable gas detection in an explosion-hazardous area.

3. Request Quotations:

   - Request quotations for the gas detection system that aligns with your needs. Ensure that any warranty information and additional services, such as calibration and maintenance, are clearly outlined in the quotation.

4. Demo and Evaluation:

   - If possible, arrange for a product demonstration to ensure that the system meets your expectations and is user-friendly.

5. Choose the Right Product:

   - Evaluate the options presented to you and select the gas detection system that best fits your requirements and budget.

6. Purchase and Delivery:

   - Place your order with the chosen manufacturer or supplier and confirm the delivery terms, especially considering the potential hazardous area.

7. Installation and Training:

   - Coordinate the installation of the gas detection system, ensuring compliance with safety standards, and ensure that your team receives proper training on its operation and maintenance.

8. Cartridge Sensor Replacement:

   - Understand the procedures for easy cartridge-type sensor replacement and ensure that you have replacement cartridges readily available.

9. Digital Flow Sensor:

   - Familiarize yourself with the digital flow sensor's operation to maintain a regular flow rate for accurate detection.

10. Auto Calibration and Magnet Bar:

    - Set up auto calibration and program settings using the magnet bar on the FND display board for ease of use.

11. Digital Gas Concentration Display:

    - Configure and monitor the 4-digit digital gas concentration display for real-time data.

12. Output Signals and Communication:

    - Set up the 4-20mA output signal and RS-485 Modbus communication according to your monitoring and data transmission needs.

13. Alarms and Relay Outputs:

    - Configure the 2-stage alarms, trouble display, and relay contact output for safety and notification purposes.

14. 3-Wire Type:

    - Ensure that the system is configured as a 3-wire type for both signal and power connections.

15. Calibration and Maintenance:

    - Ensure that the system can be calibrated and maintained by one person, following the manufacturer's guidelines.

By following these steps and working closely with the manufacturer or supplier, you can arrange the procurement of the gas detection system that meets your specific needs for flammable gas detection in an explosion-hazardous area. Maintain proper documentation for warranty and service records to ensure the long-term performance of the system in the hazardous area.