Si Meccos iTr CO2 EV Stand-Alone Gas Transmitter and Alarm System 2013

Si Meccos iTr CO2 EV Gas Transmitter

The Si Meccos iTr CO2 EV is a stand-alone CO2 gas monitor and alarm transmitter for continuous indoor air quality monitoring. It is designed for laboratories, boiler rooms, storage rooms, cellar rooms, conference halls, theaters, restaurants, and other areas where carbon dioxide accumulation or gas leaks may present a safety risk.

Applications and operation

• Continuous, selective monitoring of carbon dioxide concentrations
• Suitable for indoor air quality control and gas leak detection
• Stand-alone operation with local alarm indication
• Four LEDs indicate alarm, warning, operation, and fault status
• Internal buzzer for alarm and fault conditions
• Three integrated relay contacts for alarm, warning, and fault signals
• One reset button for alarm reset and test triggering
• Maximum number of measuring points: 1

Measurement technology

• Measurement principle: infrared spectrometry
• Measurable gas: carbon dioxide (CO2)
• Wavelength: 4.3 µm
• Light source: halogen lamp
• Detector: pyroelectric LiTa element
• Optical path lengths: 50 mm, 20 mm, 10 mm, and 1 mm
• Typical measuring ranges: 0...1, 0...2, 0...5, and 0...100 Vol% CO2
• Accuracy: +/-5% of the displayed value
• Setting time: < 30 sec (90% time), maximum 1 min. (100% time)

Outputs and alarm functions

• 4–20 mA analog output with a maximum 500 ohm load
• 1 relay alarm output, opener/closer
• 1 relay warning output, opener/closer
• 1 relay fault output, opener/closer
• Maximum relay contact load: 48 V/DC/20 W
• Internal buzzer for alarm and fault conditions
• Red LED: main alarm self-holding and pre-alarm self-extinguishing
• Yellow LED: fault
• Green LED: operation

Technical specifications

• Ambient temperature: +3...40°C
• Electrical connection: 18...26 V/DC
• Residual ripple: < +/- 100 mV
• Power consumption: 25 W maximum
• Protection class: IP56
• Dimensions (L × W × D): 165 × 82 × 90 mm
• Weight: 0.5 kg maximum
• Year of construction: 2013
• Part number: 13746
• Serial number: 5701-4155

The supplied unit is a Si Meccos iTr CO2 EV monitor gas transmitter and universal gas alarm system, described as fully functional and in very good condition.