Collection: GfG Fixed Gas Detection Systems - Transmitters

The CC33 uses catalytic combustion (CC; also heat tone or HT) to detect flammable gases and vapours such as methane, propane and hydrogen as well as ammonia. The long-life sensors make the 33 series transmitters an economical solution for detecting a wide range of combustible gases in the measuring ranges 0 to 100 % LEL and 0 to 4 % by volume (NH3). Automatic temperature compensation and linearisation of the measuring signals ensure high measuring accuracy. In the event of an alarm, two red LEDs light up and the display colour changes to red. The three optional relay outputs can be used to automatically control an explosion-proof buzzer, visual warnings such as flashing lights or the ventilation by alarm.

Communication and service
Signals are transmitted according to the analogue industrial standard (4-20 mA) or via the digital RS-485 interface (Modbus protocol). The transmitter indicates operating states via two status LEDs. In addition, two alarm and three relay LEDs are integrated. Service and adjustments are carried out on site via a magnetic pen and three magnetic buttons behind 15 mm thick bullet-proof glass (one-man adjustment). The pre-adjusted sensors can be easily replaced thanks to Smart Sensor technology. The multi-colour backlit display shows the current measured value, status messages and the menu of the CC33. Test gases can be added for function control with a calibration adapter. Alternatively, when mounted in a difficult-to-reach location, it is possible to use an optional remote calibration adapter without affecting the transmitter’s stack effect.

Explosion and equipment protection
The CC33 is approved for use up to Ex zone 1 and meets the requirements of ignition protection type “d” (flameproof enclosure). The unpainted stainless steel housing and Viton seals guarantee a long operating time even under the toughest conditions. The transmitter is protected against the ingress of dust and water according to IP54. If required, the protection class can be brought to IP67 by means of additional thread seals.

The CC33 uses catalytic combustion (CC; also heat tone or HT) to detect flammable gases and vapours such as methane, propane and hydrogen as well as ammonia. The long-life sensors make the 33 series transmitters an economical solution for detecting a wide range of combustible gases in the measuring ranges 0 to 100 % LEL and 0 to 4 % by volume (NH3). Automatic temperature compensation and linearisation of the measuring signals ensure high measuring accuracy. In the event of an alarm, two red LEDs light up and the display colour changes to red. The three optional relay outputs can be used to automatically control an explosion-proof buzzer, visual warnings such as flashing lights or the ventilation by alarm.

Communication and service
Signals are transmitted according to the analogue industrial standard (4-20 mA) or via the digital RS-485 interface (Modbus protocol). The transmitter indicates operating states via two status LEDs. In addition, two alarm and three relay LEDs are integrated. Service and adjustments are carried out on site via magnetic pen and three magnetic buttons behind 10 mm thick bullet-proof glass (one-man adjustment). The pre-adjusted sensors can be easily replaced thanks to the Smart Sensor technology. The multi-colour backlit display shows the current measured value, status messages and the menu of the CC33. Test gases can be added for function control with a calibration adapter. Alternatively, when mounted in a difficult-to-reach location, it is possible to use an optional remote calibration adapter without impairing the transmitter’s stack effect.

Explosion and device protection
The CC33 is approved for use up to Ex zone 1 and meets the requirements of ignition protection type “d” (flameproof enclosure). The epoxy-coated aluminium housing and Viton seals guarantee a long operating time even under the toughest conditions. The transmitter is protected against the ingress of dust and water according to IP54. If required, the protection class can be brought to IP67 by means of additional thread seals.

The IR29 Di 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 Di a permanently reliable solution for detecting a wide range of combustible gases and vapors in the measuring ranges 0 to 100 % LEL as well as CO₂ in the measuring range 0 to 10 % by volume. 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. The currently measured gas concentration can be read on the LC display. Depending on the installation location, this can also be selected as a rotatable version. Service and adjustments are carried out on site using the optional RC2 remote control or the RC3 IR remote control (one-man adjustment). The IR29’s self-monitoring feature increases instrument safety between maintenance intervals. Test gases can be added for function control and adjustment using a calibration adapter.

Safety and instrument protection
The IR29 Di is ATEX-certified for use in Ex zone 0. It complies with the intrinsic safety “i” standard, which is required for use in numerous industrial plants and in mining. 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.

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.

The IR29 DB 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 detect up to three gases simultaneously and 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 DB 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
Signals are transmitted via the digital RS-485 interface (Modbus). Operating states are indicated by the transmitter via two status LEDs. The currently measured gas concentration can be read on the LC display. Depending on the location of the installation, this can also be selected as a rotatable version. Service and adjustments are carried out on site using the optional RC2 remote control or the RC3 IR remote control (one-man adjustment). Self-monitoring of the IR29 increases device safety between maintenance intervals. The transmitter automatically records measured values and events in an internal ring buffer. Test gases can be added for function control and adjustment using a calibration adapter.

Safety and instrument protection
The IR29 DB is ATEX-certified for use in Ex zone 1. It complies with the increased safety “e” and encapsulation “m” standards. The housing made of V4A stainless steel and poly-carbonate is protected against the ingress of dust and water (protection class: IP67). Accessories include a guard plate and dust filter.

The IR29 D 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 D a permanently reliable solution for detecting a wide range of combustible gases and vapors in the measuring ranges 0 to 100 % LEL as well as CO₂ in the measuring range 0 to 10 % by volume. 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. The currently measured gas concentration can be read on the LC display. Depending on the installation location, this can also be selected as a rotatable version. Service and adjustments are carried out on site using the optional RC2 remote control or the RC3 IR remote control (one-man adjustment). Self-monitoring of the IR29 increases device safety between maintenance intervals. The transmitter automatically records measured values and events in an internal ring buffer. Test gases can be added for function control and adjustment with a calibration adapter.

Safety and instrument protection
The IR29 D is ATEX-certified for use in Ex zone 1. It complies with the increased safety “e” and encapsulation “m” standards. The housing made of V4A stainless steel and poly-carbonate is protected against ingress of dust and water (protection class: IP67). Accessories include a guard plate and dust filter.