C3h8

2901-37-005 IR 29 Di Gas Transmitter with Display, with Pressure and Humidity Compensation, IP67, Propane (C3H8), 0 - 100 LEL by GfG

Measuring Principle

IR transmitters have become recognized as reliable gas warning systems for explosion protection. They are used to detect individual combustible gases or a wide range of gases. This involves sending an IR beam with a certain light intensity through a measuring space and then capturing it with a detector. Parts of this beam are absorbed by, amongst other things, hydrocarbon molecules. The reduced light intensity of the beam is registered by beam detectors and converted into a signal as the existing % LEL gas concentration.

Benefits

A special feature of our IR technology is its ability to also measure combustible gases above the lower explosion limit. Moreover, the measurement does not require oxygen.

With this technology there is basically no risk of contaminating the sensor, through silicone vapors or hydrogen sulfide, when using catalytic combustion sensors.

Operation

IR transmitters are usually used with 2 wavelengths, a so-called reference wavelength and just one measuring wavelength. Strict limits are applied to these systems. The absorption spectra of many hydrocarbons are located in the wavelength range of 3.3 μm and overlap to a large extent.

This means that gases with overlapping spectra and just one measuring wavelength can no longer be clearly distinguished. Some hydrocarbons, e.g. the frequently used welding gas acetylene, are non-absorbing in the wavelength range of 3.3 µm, but absorb instead in neighboring wavelength ranges.

In many practical applications, it is not essentially important which gas is responsible for the explosion risk. Therefore, early warnings through the broadband measurement of hydrocarbons in order to monitor the lower explosion limit (LEL) must be guaranteed. False alarms with uncritical concentrations of individual gases or solvents are thus absolutely unacceptable.

These requirements are problems for systems with 2 wavelengths.

Patented GfG Technology

The internationally patented technology of the IR 29 has been developed to solve these problems. The gold-plated mirror optics of the sensor contains 2 radiators and up to 4 detector elements with different optical filters. The precisely calculated, microstructured and pure gold coated mirror optics of the IR 29 are supplied for the first time without beam splitters.

This helps to cut signal losses by 50 % and to completely avoid the physically-related disadvantages of a beam splitter. The measured values from two additional wavelengths (4 wavelengths in total) ensure improved detection of individual gases and thus enhanced selectivity. This results in the prevention of false alarms. Only a 4 wavelength system always guarantees early warnings and the simultaneous prevention of false alarms.

New Technology

The IR 29 is the first and only intrinsically safe IR gas transmitter with patented 4-beam 4-wavelength technology.

The ignition protection class "intrinsically safe", which is so essential for industrial plants and the mining industry, is achieved by the additional use of the SB1 safety barrier and its internationally patented and innovative design.

Complete Safety Even In Zone 0

The IR 29 is the first IR gas transmitter that can also be used in Ex zone 0 and which enables maintenance as well as replacement of the sensor head without additional expense when energized.

Universal Application

The IR 29 with its robust V4A stainless steel housing has been designed to withstand the harshest environmental conditions.

The application areas of the dust and water-protected structure range from production and storage areas to disposal sites, biogas plants, mines and oil rigs.

Internal Data Logger

A standard built-in data logger records all the measuring data, minimum / maximum values, average values and alarm events of the last 24 hours in a ring buffer.

The recording can also be shown on the display as a 2 and 8 hour trend indicator.

The histogram mode can be selected as a permanent display of the measured values. These values are continuously updated.

Graphical Display

Measured values are shown on the high-contrast graphical display. The display can be rotated 180° depending on the installation of the IR 29.

Self Diagnosis

Processor-based signal processing enables the systematic compensation of temperature dependencies, aging influences and soiling effects. Safety-relevant functions are monitored permanently via self-diagnosis procedures and a possibly required service is indicated automatically. Daily interfering factors, such as dust and dirt accumulation, are almost completely eliminated by the innovative design.

Pressure Sensor, Moisture and Temperature Compensation

The measuring accuracy of IR sensors depends on partial pressure and thus also air pressure. Climatic fluctuations or barometric high pressure therefore influence the measuring result. Furthermore, the absorption spectrum of water almost completely covers that of hydrocarbon absorption in the 2.7 to 3.3 μm range. Air humidity therefore initially generates a measuring signal the same as the actual measuring gas. This cross-sensitivity is of particular importance in warm areas with high relative humidity. An increase in the absolute water absorption capacity of air is not linear with the temperature, i.e. three times as much water can be absorbed at 40 °C than at 20 °C. This influence can only be compensated if the current moisture content of the air is known. The IR 29 can be optionally equipped with a pressure and moisture sensor for compensation.

Maximum Safety

The innovative display enables the realization of completely safe warning concepts.

Local displays and signals directly at the device can be used to provide an early warning of potential risks.

The display at the upstream safety barrier SB1 D enables the detection of risks outside the danger zone being monitored.

This allows immediate on-site action before really hazardous situations occur.

Dust Protection

A gas permeable, water-repellent diaphragm protects the absorption space of the transmitter against dust. The additional impact protection made from robust V4A stainless steel prevents mechanical damage to the optical components.

The diaphragm can be cleaned or replaced in a matter of minutes.

Remote Controls

The IR 29 transmitter does not feature control elements for setting or servicing tasks. This helps to prevent accidental or unauthorized manipulation.

Service work at the IR 29 transmitter is carried out using the RC 2 remote control.

Features

• First intrinsically safe infrared transmitter for explosion protection
• ATEX II 1G Ex ia IIC T4 Ga C0158 can also be used in Ex zone 0
• Temperature, moisture and pressure compensation
• Patented infrared technology (NDIR)
• The energized IR sensor head can be replaced in Ex areas
• Maintenance and service-friendly

GD-70D-MC3H8-5K GD-70D Smart Transmitter, MOS Sensor, C3H8 (propane), 0-5,000 ppm by RKI Instruments

RKI Instruments has been making high quality gas detection and monitoring units for over 15 years. With an emphasis on safety and reliability, RKI Instruments excels at providing the best products in gas detection and sensor technology on the market. Every year, RKI strives to improve its product offering and scours the globe for the latest technologies and innovative designs. With the introduction of the GD-70D Series Intelligent Gas Detector, employers and workplace safety managers can feel confident that they have purchased a reliable detector that is built to last.

GD-70D Series Intelligent Gas Detector

The GD-70D Series Intelligent Gas Detector is a new smart gas detection transmitter that monitors combustibles, oxygen, and a wide range of toxic gases. The unit can be used as a standalone device, integrated with other PLC systems, or integrated with RKI's Beacon series of single and multi-channel controllers. Its common platform integrates numerous detection methods and requires very little maintenance.

Exclusive Features

The plug and play intelligent sensors make for easy setup and calibration by internally retaining calibration and sensor data. This allows workers to replace sensors while in the field without the need to reprogram the equipment. For little maintenance and optimal reliability, the internal technology automatically adjusts for long-term zero and span drift. The pump flow is also self-tuning for low maintenance functioning. In general, the smart sensors use electrochemical cell detection, semiconductor detection, pyrolysis-particle detection, galvanic cell detection, and catalytic combustion detection.

The GD-70D Series features a large LCD display that easily reads all notifications and provides a color coded graph for alarm status (first and second alarms are red, and fault alarms are yellow). The LCD screen displays the pyrolyzer connection, gas concentration, detection unit of measurement, the detected gas, the maintenance status, sensor identification, the flow rate, a graph of gas concentration, error codes, and alarm points. All operational settings are completely user adjustable from the front panel. The unit also has a self-diagnosing function which detects sensor trouble and system failure. The Intelligent Gas Detector has a convenient troubleshoot feature through its firmware. This allows users to investigate and resolve their own equipment issues while minimizing maintenance costs.

Specifications

The Intelligent Gas Detector is a convenient size for workplace and wall space efficiency with dimensions of 2.8 D x 4.7 H x 5.9 D and weighs approximately 2 pounds. It can be mounted to a wall easily with a base plate and 2 or 3 screws. Sensor replacements and pump replacements can be performed quick and easily without tools.

*Please note we can only ship RKI products to customers within the United States

GD-70D4X-MPRO5K GD-70D Smart Transmitter, C3H8, 0-5000 ppm, in NEMA 4X Housing by RKI Instruments

RKI Instruments has been making high quality gas detection and monitoring units for over 15 years. With an emphasis on safety and reliability, RKI Instruments excels at providing the best products in gas detection and sensor technology on the market. Every year, RKI strives to improve its product offering and scours the globe for the latest technologies and innovative designs. With the introduction of the GD-70D Series Intelligent Gas Detector, employers and workplace safety managers can feel confident that they have purchased a reliable detector that is built to last.

GD-70D Series Intelligent Gas Detector

The GD-70D Series Intelligent Gas Detector is a new smart gas detection transmitter that monitors combustibles, oxygen, and a wide range of toxic gases. The unit can be used as a standalone device, integrated with other PLC systems, or integrated with RKI's Beacon series of single and multi-channel controllers. Its common platform integrates numerous detection methods and requires very little maintenance.

Exclusive Features

The plug and play intelligent sensors make for easy setup and calibration by internally retaining calibration and sensor data. This allows workers to replace sensors while in the field without the need to reprogram the equipment. For little maintenance and optimal reliability, the internal technology automatically adjusts for long-term zero and span drift. The pump flow is also self-tuning for low maintenance functioning. In general, the smart sensors use electrochemical cell detection, semiconductor detection, pyrolysis-particle detection, galvanic cell detection, and catalytic combustion detection.

The GD-70D Series features a large LCD display that easily reads all notifications and provides a color coded graph for alarm status (first and second alarms are red, and fault alarms are yellow). The LCD screen displays the pyrolyzer connection, gas concentration, detection unit of measurement, the detected gas, the maintenance status, sensor identification, the flow rate, a graph of gas concentration, error codes, and alarm points. All operational settings are completely user adjustable from the front panel. The unit also has a self-diagnosing function which detects sensor trouble and system failure. The Intelligent Gas Detector has a convenient troubleshoot feature through its firmware. This allows users to investigate and resolve their own equipment issues while minimizing maintenance costs.

Specifications

The Intelligent Gas Detector is a convenient size for workplace and wall space efficiency with dimensions of 2.8 D x 4.7 H x 5.9 D and weighs approximately 2 pounds. It can be mounted to a wall easily with a base plate and 2 or 3 screws. Sensor replacements and pump replacements can be performed quick and easily without tools.

*Please note we can only ship RKI products to customers within the United States

Part Number: CG2R0.8558

Part Number: CG2R1.0103

2801-11-002 CC 28 Fixed Gas Transmitter with Gas Optimized Catalytic Sensor 0-100% LEL (MK 208-1), Propane (C3H8), Display by GfG

Superior technology

In areas where combustible gas or vapor hazards may exist, GfG s new CC 28 combustible transmitter is the perfect choice for reliable area monitoring. With its proven design, this ATEX certified transmitter offers an integrated explosion-proof buzzer and bright-alarm LEDs for reliable warning of combustible gas hazards (even in hazardous locations). This superior design provides warnings for immediate personnel, and ensures entire plant safety.

Easy handling

Smart sensor technology allows easy installation. Sensor replacement takes only a few seconds-simply plug in the sensor. User adjustments are performed at the transmitter with simple touch keys, or with the optional remote control interface (one person calibration).

RC2 remote control

Several combustible gases are lighter than air. With the transmitter mounted close to the ceiling, calibration can be difficult. The remote control for the CC 28 allows you to perform calibration or zero adjustments without the need of a ladder or lift. A flexible cable connects the remote control to the transmitter and displays the same reading as the display on the transmitter. With the remote control inspection,service and calibration can be performed easily by one person.

The sensor and the integrated temperature compensation provide highest measurement accuracy.

Low maintenance requirements and long sensor life reduce your cost of ownership. Just sign a service contract and don t worry about any problems. We will service your system at regular intervals.

Models

Model CC 28D allows you to read the gas concentration both at the transmitter and at the GMA controller.With the RC2 remote control - the CC 28 is easy to use and to operate even if it is mounted at the ceiling.

Model CC 28DA provides additional warning with bright integrated alarm LEDs and a buzzer.

Features

• Full-featured smart transmitter for combustible gas measurement
• Non-intrusive calibration adjustment
• Expected sensor life of 5 years
• Increased safety design to reduce installation cost in potentially hazardous locations
• ATEX EEx dem [1b] IIC T4
• Proprietary, high performance combustible gas sensor
• Available in three configurations: Blind (no display), Display, Display with local alarms

Advantages at a glance

• Display of gas concentration at transmitter or remote control
• ATEX II G EEx dem [ib] IIC T4
• Ex-proof visual and audible alarms
• No need of expensive EX-proof buzzer or wiring
• Easy sensor replacement with plug-in sensors
• Long life sensor
• Low service requirement
• Permanent status and function display at transmitter
• Adjustments by means of touch keys or remote control without opening the casing
• Easy handling even at hard-to-reach accessible transmitter positions.

*Please note we can only ship RKI products to customers within the United States

Part Number: CGQ348

Part Number: CGQ583

Part Number: CG2R1.034AL

*Please note we can only ship RKI products to customers within the United States

GD-70D-MC3H8-2K GD-70D Smart Transmitter, MOS Sensor, C3H8 (propane), 0-2,000 ppm by RKI Instruments

RKI Instruments has been making high quality gas detection and monitoring units for over 15 years. With an emphasis on safety and reliability, RKI Instruments excels at providing the best products in gas detection and sensor technology on the market. Every year, RKI strives to improve its product offering and scours the globe for the latest technologies and innovative designs. With the introduction of the GD-70D Series Intelligent Gas Detector, employers and workplace safety managers can feel confident that they have purchased a reliable detector that is built to last.

GD-70D Series Intelligent Gas Detector

The GD-70D Series Intelligent Gas Detector is a new smart gas detection transmitter that monitors combustibles, oxygen, and a wide range of toxic gases. The unit can be used as a standalone device, integrated with other PLC systems, or integrated with RKI's Beacon series of single and multi-channel controllers. Its common platform integrates numerous detection methods and requires very little maintenance.

Exclusive Features

The plug and play intelligent sensors make for easy setup and calibration by internally retaining calibration and sensor data. This allows workers to replace sensors while in the field without the need to reprogram the equipment. For little maintenance and optimal reliability, the internal technology automatically adjusts for long-term zero and span drift. The pump flow is also self-tuning for low maintenance functioning. In general, the smart sensors use electrochemical cell detection, semiconductor detection, pyrolysis-particle detection, galvanic cell detection, and catalytic combustion detection.

The GD-70D Series features a large LCD display that easily reads all notifications and provides a color coded graph for alarm status (first and second alarms are red, and fault alarms are yellow). The LCD screen displays the pyrolyzer connection, gas concentration, detection unit of measurement, the detected gas, the maintenance status, sensor identification, the flow rate, a graph of gas concentration, error codes, and alarm points. All operational settings are completely user adjustable from the front panel. The unit also has a self-diagnosing function which detects sensor trouble and system failure. The Intelligent Gas Detector has a convenient troubleshoot feature through its firmware. This allows users to investigate and resolve their own equipment issues while minimizing maintenance costs.

Specifications

The Intelligent Gas Detector is a convenient size for workplace and wall space efficiency with dimensions of 2.8 D x 4.7 H x 5.9 D and weighs approximately 2 pounds. It can be mounted to a wall easily with a base plate and 2 or 3 screws. Sensor replacements and pump replacements can be performed quick and easily without tools.

*Please note we can only ship RKI products to customers within the United States

Part Number: CG2RX103

Part Number: CGQ588

Part Number: CGQ343