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Si Meccos iTr CO2 EV Infrared Gas Transmitter and Alarm System 2013

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Measured Gases
CO2
All 3 specifications
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Specifications 3

Brands
Si Meccos
New/Used
Used
Measured Gases
CO2

Product description

Stand-alone CO2 gas transmitter with infrared detection, alarm LEDs, buzzer, relays, and 4–20 mA output.

Si Meccos iTr CO2 EV is a stand-alone CO2 gas transmitter and alarm system designed for continuous indoor air-quality monitoring and gas-leak detection. It is suitable for laboratories, boiler rooms, storage areas, basements, conference halls, theaters, restaurants, and other occupied spaces where elevated carbon dioxide concentrations may require a warning.

  • Manufacturer: Si Meccos
  • Model: iTr CO2 EV
  • Part number: 13746
  • Serial number: 5701-4155
  • Year of manufacture: 2013
  • Condition: Very good, fully functional condition
  • Measurement principle: Infrared spectrometry
  • Measured gas: Carbon dioxide (CO2)
  • Wavelength: 4.3 µm
  • Light source: Halogen lamp
  • Detector: Pyroelectric lithium tantalate (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 displayed value
  • Response time: Less than 30 seconds at 90%; maximum 1 minute at 100%
  • Operating temperature: +3 to +40°C
  • Measurement points: One maximum
  • Analog output: 4–20 mA, maximum 500 Ω load
  • Relay outputs: Three integrated relays for alarm, warning, and fault; normally open/normally closed contacts
  • Maximum relay rating: 48 V DC / 20 W
  • Visual indicators: Four LEDs for alarm, warning, operation, and fault
  • Alarm indication: Red LED for latching main alarm and self-resetting pre-alarm; yellow LED for fault; green LED for operation
  • Audible alarm: Internal buzzer for alarm and fault conditions
  • Control input: Reset button for alarm reset and test activation
  • Power supply: 18–26 V DC, residual ripple below ±100 mV
  • Power consumption: 25 W maximum
  • Ingress protection: IP56
  • Dimensions (L × W × D): 165 × 82 × 90 mm
  • Weight: 0.5 kg maximum

The compact CO2 monitor provides local concentration alerts through LED indicators, an internal buzzer, and configurable relay contacts. Its 4–20 mA output supports integration with building-management, laboratory safety, and environmental monitoring systems.

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Frequently asked questions

How long does laboratory equipment typically last?

With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.

Can I get service for older equipment?

Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.

Where can I buy parts?

Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.

What is the typical lead time for refurbished equipment?

Two to six weeks, depending on refurbishment scope and whether calibration is included.

Does laboratory equipment ship internationally?

We ship to 38 countries. Crating and customs handling are quoted with the instrument.

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Last updated 29 October 2026