1. Multi-Gas Detection: Smart Gas Detector capable of detecting Oxygen, Toxic, Combustible Gases, and Volatile Organic Compounds (VOC).
2. Smart Sensor Module: Smart Gas Detector utilizes a pluggable gas sensor module with options for Electrochemical, Catalytic, Pellistor, NDIR, and PID sensors.
3. Data Storage: Calibration data, alarm data, offset data, and output current data are saved in the sensor module, ensuring easy maintenance and servicing.
4. Wide Detection Range: Capable of detecting gas concentrations down to PPM, %V/V, and %LEL, providing comprehensive monitoring.
5. Digital Display: 8 x 2 alphanumeric LCD with configurable backlit for clear and convenient gas concentration display.
6. Alarm Indicators: LED indicators for ‘Sensor Open,’ ‘Over Range,’ ‘Sensor Replace,’ ‘Cal Due,’ and ‘Cal Fail’ for quick status identification.
7. Output Signals: Standard 4-20mA signal output with configurable range, along with options for 0-10V, 0-5V, and 0-1V.
8. Optional Set Points: Configurable STEL and TWA set points for Toxic and VOC gases, allowing customization based on specific requirements.
9. Communication Options: Optional RS-485 Communication Port with MODBUS RTU PROTOCOL for enhanced connectivity.
10. User-Friendly Programming: Non-intrusive programming for weatherproof models using front keys, with password protection and password-changing facility.
11. Alarm Acknowledgement: Facility for alarm acknowledgment from both front and rear terminals, enhancing user control.
12. Test Mode: Allows checking of electronics, alarm LEDs, relays, and output current/voltage with or without the sensor module.
13. Optional Relay Contacts: On-board relay contacts with two configurable alarm levels and one fail-safe relay for additional safety measures.

Technical Specifications:

1. Sensor Technology: Electrochemical, Catalytic, Pellistor, NDIR, PID
2. Detection Method: Diffusion
3. Operating Temperature: -15 to +50°C
4. Power Supply: 18 to 36 VDC, Typically 24VDC
5. Response Time: Less than 15 seconds
6. Output Signal Capacity: ±0.125% Full Scale for 4-20mA output
7. Electrical Connector Cross-section: 1.5mm for Flexible or Armoured Shielded Cable
8. Environmental Protection: IP-65, suitable for various environments
9. Error Monitoring: Comprehensive monitoring for sensor break, over range, output current open, and more.
10. Mounting Options: Wall mounting, stand mounting, or pipe mounting for flexibility.
11. Weight: Varies based on housing type, ranging from approximately 573 to 636.5 grams.
12. Optional Accessories: Includes certified 24VDC power supply, mounting stand, gas calibration kit, hooter cum flasher, gas sampling & conditioning system, RS-485 to USB or RS-232 converter, Ethernet converter, and PC-based SCADA software.
13. Common Deliverables: Test Calibration Certificate, Reference Calibration Gas Certificate, Operational/Instrument User Manual, Standard Mounting Hardware.