1. Product Research:

   - Start by researching manufacturers or suppliers that offer gas detection systems with the specified features for fast response to flammable gases.

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 fast response to flammable gas leaks.

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.

7. Installation and Training:

   - Coordinate the installation of the gas detection system 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. LCD Display and Configuration:

    - Learn how to use the fine LCD display to access and configure various information as needed.

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 communication method (RS-485 Modbus or PoE) 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 Connection:

    - Ensure that the system is configured with a 3-wire connection for both signal and power.

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 fast response to flammable gases leakage. Maintain proper documentation for warranty and service records to ensure the long-term performance of the system.