Si Meccos iTr CO2 EV CO2 Gas Transmitter and Universal Gas Alarm System P/N 13746

Si Meccos iTr CO2 EV is a stand-alone CO2 gas transmitter and universal gas alarm system for continuous indoor air-quality and carbon dioxide monitoring. It is designed for laboratories, boiler rooms, storage areas, basements, conference halls, theaters, restaurants, and other occupied or potentially hazardous spaces.

The unit detects excessive CO2 concentrations and provides local visual and audible alarms, while integrated relay contacts and a 4–20 mA analog output support connection to external monitoring or building-management systems.

Key features

• Selective, continuous CO2 measurement
• Infrared spectrometry measurement principle
• Stand-alone operation
• Four status LEDs for alarm, warning, operation, and fault indication
• Internal buzzer for alarm and fault conditions
• Three integrated relay contacts for alarm, warning, and fault
• Reset and test trigger button
• One maximum measurement point
• Suitable for indoor air-quality monitoring and gas-leak detection applications

Technical specifications

• Measured gas: CO2
• Wavelength: 4.3 µm
• Light source: Halogen lamp
• Detector: Pyroelectric LiTa element
• Optical path lengths: 50 mm, 20 mm, 10 mm, 1 mm
• Typical measuring ranges: 0–1, 0–2, 0–5, and 0–100 vol% CO2
• Accuracy: ±5% of displayed value
• Response time: Less than 30 seconds to 90%; maximum 1 minute to 100%
• Operating temperature: +3 to +40°C
• Analog output: 4–20 mA, maximum 500 Ω load
• Relays: Alarm, warning, and fault; normally open/normally closed contacts
• Maximum relay contact load: 48 V DC / 20 W
• Power supply: 18–26 V DC
• Residual ripple: Less than ±100 mV
• Maximum power consumption: 25 W
• Ingress protection: IP56
• Dimensions: 165 × 82 × 90 mm (L × W × D)
• Weight: Maximum 0.5 kg
• Year of manufacture: 2011
• Part number: 13746
• Serial number: 5701-4134
• Condition: Very good and fully functional