IR29 i Transmitter

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For more than 60 years, GfG has been committed to protecting people, industrial facilities and the environment by developing and manufacturing gas detection systems. With an extensive range of portable gas detectors and fixed gas detection systems, GfG can supply you with a selection of products for many applications and industries. Our scope also includes on-site service and advanced training courses.


What distinguishes us from other manufacturers

We are specialists for gas detection solutions, not generalists in safety. No one can be the best at everything, but if you focus on one thing, you can achieve excellence. We work hard to provide you with the best gas detection equipment available, so you can focus on your task without having to worry about the risks that gases can pose. Because of that we invest more heavily in research and development than any other company. Approximately 13% of our annual turnover is reinvested in basic research and the development of new sensors and devices.


A “never say no” approach

This includes finding solutions for customers whose requirements are not met by “off the shelf” products. We take pride in our longstanding cooperation with the Singapore Civil Defence Force (SCDF), for example. For many years now, they have put their trust in GfG’s portable devices, which we optimized to adapt to the Singaporean climate and fulfill the special requirements for integration into the SCDF communication network.

The IR29 i uses non-dispersive infrared (NDIR) sensor technology to detect combustible gases and vapors as well as carbon dioxide. For selective measurement results without false alarms, our patented 4-beam and 4-wavelength technology with gold-plated mirror optics is used, which dispenses with beam splitters altogether. The infrared sensors used also enable measurements above the lower explosion limit (LEL), do not require oxygen and are insensitive to sensor poisons. The long-life sensors make the IR29 i a permanently reliable solution for detecting a wide range of combustible gases and vapors in the 0 to 100 % LEL measuring range, as well as CO2 in the 0 to 10 % vol. measuring range. Automatic temperature compensation and linearization of the measurement signals ensure high measurement accuracy.

Communication and service
Signal transmission is according to the 4-20 mA industry standard. The transmitter indicates operating states via two status LEDs. If a safety barrier with display is used, measured values and status can be read safely outside the Ex zone. Service and adjustments are performed on site using the optional RC2 remote control (one-man adjustment). Self-monitoring of the IR29 i increases device safety between maintenance intervals. Test gases can be added for function control and adjustment using a calibration adapter.

Safety and instrument protection
The IR29 i is ATEX-certified for use in Ex zone 0. It complies with the intrinsic safety “i” standard, which is required for use in many industrial and mining applications. The V4A stainless steel and poly-carbonate housing is protected against dust and water ingress (protection class: IP67). Accessories available include a guard plate and dust filter.


Key features at a glance:

General information:

  • Measuring principle: infrared (IR)
  • For combustible gases and vapors
  • Intrinsically safe
  • Not susceptible to sensor poisons
  • Expected sensor lifetime: 6 years
  • Signal transmission: 4-20 mA
  • Protection class: IP67
  • Integrated data logger

Approvals / Certifications:

  • ATEX certification: II 1G Ex ia IIC T4 Ga

Optionally available:

  • Safety barrier, pressure and humidity sensors, ex-proof control unit RC2, impact protection, flow adapter, calibration adapter, protection plate, dust filter, weatherproof housingflow adapter

Would you like to know more?

Our team can help you with any product information, quotes, or any general questions you may have about the product.

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IR29 i Transmitter

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