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2901-37-004 IR 29 i Gas Transmitter without 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

72-0327RKC GX-8000 Harsh Environment Sample Draw Gas Monitor, 5 Sensors, % Vol (HC)/LEL/O2/H2S/CO with Li-Ion Battery Pack and 115/220 VAC Charger by RKI Instruments

The GX-8000 sets a new standard for rugged, relaible portable gas detection. It's tough water proof design utilized features based on years of gas detection design experience, to assure that the instruments wiil operate properly in all kinds of harsh gas detection applications.

The integrated pump with 0.75 l/min suction flow lets you take samples from upto 30 m.

On top of that, GX-8000 configure is also very versatile due to simple sensor replacement. Additionally, alarms levels are freely adjustable adjusted to your needs.

Combining all revelant certifications, such as MED (Wheelmark) and ATEX (Ex), GX-8000 is a perfect tool for marine applications.

Additional features include the large LCD screen with simultaneous display of up to 5 ranges, time, live test and battery status. The display in addition to a loud and clear buzzer and 3 alarm LED's gives you full overview at all times so that alarm conditions are obivous from multiple perspectives especially in high noise environments.

The GX-8000 features a waterproof and dust proof design with IP 67 rating for which the overmold body is impact resistant and RFI shielded. Consequently, GX-8000 offers full protection while minimizing large instrument fleets because of its functionality.

The built-in infrared port with standard datalogger features lets you store, download and analyze measurement data for perfect traceability.

And because of the wide accesory range you can also customize the GX-800 for special applications and to fit your individual requirements.

Features

• Real-time 5-gas detection with simultaneous display
• Visual and audible alarm
• Strong sample drawing capacity
• Password protected, auto calibration
• Datalogging standard
• IP-67: waterproof and dust proof design
• ATEX and MED (Wheelmark) approved

Applications

• Confined space
• Refineries/petrochemical/chemical plants
• Oil tanker/gas carrier/bulk carrier
• Water/wastewater treatment
• Fire services
• Telecommunication services
• Power plant
• Gas plant/gas supplier service
• Utilities
• Coating field
• Fuel cell facilities

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

58ES-112-25 58 Liter Single Gas (25 PPM NO2) Ecosmart Refillable Cylinder, Nitrogen Balance by Gasco

The NEW 58-liter refillable cylinder is a smaller package! 58-liter ecosmart cylinders hold pure and mixed gases. Filled to your specifications, this lightweight portable cylinder is easier to manage than the traditional bigger 58-liter.

Features & Benefits

• Refillable or Disposable
• Dynamic smaller package
• Holds pure and mixed gases
• Lightweight and portable
• Same capacity as a traditional
• 58-liter disposable cylinder
• Eliminates disposal fees and regulatory paperwork

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

IAQ Probe Air Quality Monitor

Designed to operate in environments requiring reliable monitoring, the IAQ Probe is industry s most versatile portable air quality monitoring tool. The IAQ Probe simultaneously monitors four parameters: Carbon Monoxide, Carbon Dioxide, relative humidity and temperature.

Ergonomically designed and user-friendly, the IAQ Probe delivers peak performance second to none. The instrument displays instantaneous readings on the easy-to-read LCD display. The IAQ Probe is available with datalogging capacity with a real-time clock that calculates and records STEL and TWA readings (more than 77 days of data stored). Additional features include: audible and visual alarms, easy one-button calibration and peak reading memory. A full line of accessories makes the instrument even more versatile.

Practical Features

A real-time clock calculates and records STEL and TWA readings. Additional features include audible, visual and vibrator alarms, one-button calibration and peak reading memory.

A minimum 77-day datalogging capacity is complemented by a user-friendly Windowsbased data management software, which provides direct access to the IAQ Probe and enables data downloading with a few clicks of a mouse. Once the data is downloaded, the data management software analyses the information and compiles it in an easy-to-read format. All vital statistics are sorted by date and time. The deluxe software enables interactive graphing and trending through powerful charting tools.

User Friendly

• Easy-to-read LCD display
• Instantaneous readings
• One-button calibration
• Windows-based data management software
• Portable
• Compact and lightweight

Versatility and Reliability

• Monitors Carbon Monoxide, Carbon Dioxide, relative humidity and temperature
• Full line of accessories
• More than 77 days of data stored

Practicality

• Real-time clock calculates and records STEL and TWA readings
• Peak reading memory

Safety Measures

• Audible alarm
• Visual alarm
• Vibrating alarm

pH630C pH/Temperature & Replaceable pH Electrode by Jenco

VisionPlus pH630 is a rugged, easy to use, IP67 rated pH tester with temperature readout. Key features include IP67 rated body, automatic temperature compensation, up to 3 point calibration and replaceable electrode module. Available in degrees Celsius and degrees Fahrenheit models.

This pH tester is RoHS compliant.

• Automatic temperature compensation
• 1, 2 or 3 point calibration
• Stores calibration data
• Replaceable electrode module
• High noise resistance
• Simultaneous display of pH and temperature
• Large temperature range
• Dedicated button for data hold
• Low battery indicator
• IP67 rated body for water-proof and dust-proof
• RoHS compliant

Part Number: 34L-77-500

WD-35643-11 DO 6+ Dissolved Oxygen Meter Only, with NIST Traceable Certificate of Calibration, 0.0 to 50.0°C Tempature Range and 0.0 to 50.0 ppt, 0 to 20 mg/L Dissolved Oxygen Range by Oakton

High accuracy combined with economical pricing

These meters provide a great value. The ranges work to test water quality in wastewater, surface water, ground water, or drinking water. A clear LCD display shows results in ppm or mg/L with enunciators to aid in use and troubleshooting. Six simple buttons allow for freezing readings, toggling between display units and temperature results, setup, calibration, and automatic barometric and salinity compensation after manual parameter inputs. Additional benefits of the simple design allow you to view electrode slope, zero offset, and millivolt values for electrode diagnostics.

• Includes Electrolyte solution, membrane caps,protective rubber boot, and batteries
• Low-maintenance, Galvanic probe requires no warm-up time

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

Vortex 12-Channel Control Panel for Gas and Fire Monitoring

Crowcon Detection Instruments consistently produces the best gas detection and monitoring devices in the industry. Around the globe, companies and workers enjoy higher standards of safety when they purchase and implement a product by Crowcon. With many years of research and development under its belt, Crowcon continuously works to advance its product offerings by utilizing the latest technology in gas detection. The Vortex 12-channel control panel for gas and fire monitoring is one of the most versatile and compatible control panels on the market with its ease of use and ease of customization.

Easy to Use

The Vortex control panel requires very little training. The unit is incredibly easy to use and simple to understand. All of the day to day operations are easily accessible through push buttons on the front panel, and while the display panel continuously shows necessary information, the LEDs only illuminate when a hazard or fault is detected. This allows users to quickly check the conditions with a mere glance. The Vortex is also incredibly easy to service and maintain. Replacement parts simply plug into the unit, and the interior of the panel was designed for easy access for cable termination. The zones within the unit are compartmentalized so that a user may work on one part of the unit without disabling the entire control panel.

Maximum Flexibility

Crowcon understands the economics of efficiency. When designing the Vortex 12-channel control panel, the company worked to create a product that would be optimally compatible with existing equipment and infrastructures. The Vortex can be configured to match any and all site requirements with minimum wiring. The control panel may also be factory set with specific requirements, easing the installation and training process. These settings may be adjusted at any time by a PC using Vortex software. The panel also uses industry standard communication links and can be simply integrated with existing control systems.

Reliable and Safe

The Vortex has been tested for numerous environmental hazards and is rated IP65 for dust and water ingress. To improve safety measures, all of the relays are monitored continuously. In this manner, faults are immediately identified. This helps to protect the integrity of the device and the safety of the users. The unit also continuously monitors its power supply. If power were to fail, the control panel would switch to its internal batteries which are also continuously monitored. For years, Crowcon has developed its reputation for manufacturing safe and reliable gas detection equipment. In turn, the Vortex control panel enjoys some of the highest safety standards in the industry.

Specifications

The Vortex has dimensions of 18.5 x 12 x 6.5 inches. Enclosed in aluminum and plastic, the wall mounted control panel houses up to 12 channels and utilizes IP65 ingress protection. The unit also has datalogging capabilities. The panel displays several indicators:

• Channel number
• Gas reading
• Measurement units
• Power
• Battery status
• Run/hold indication
• Channel test mode
• System fault/integrity
• Color coded visual alarms and audio alarms

WD-35630-81 pH/CON 450 Portable Waterproof pH/CON Meter with Combination Probe Kit with NIST Certification by Oakton

The pH/CON 450 meter offers a rugged, waterproof housing, making it ideal for the manufacturing floor, field testing, and the laboratory. Large, backlit LCD lets you view the main measurement simultaneously with temperature. Calibrate pH with up to six points from USA, NIST, DIN, PWB, and custom pH buffer sets. Autocal feature for conductivity has one calibration point per range. ATC ensures measurement accuracy even in fluctuating temperatures.

Meter features include ready (stability) indicator, smart averaging, user-selectable C/F units, hold function, calibration alarm, battery life-indicator, and electrode status.

Perform data logging with manual or timed collection of up to 500 data sets with real-time clock time/date stamp. Order optional data cable for USB and RS-232 connectivity. Choose combination pH/CON probe or separate probe options.

• Intuitive, user-friendly icons-electrode status displays pH slope
• Grip-Clip electrode holder quickly and easily secures electrode to side of beaker or container
• USB or RS-232 output for up to 500 data sets
• Extended battery life or optional universal power adapter
• Built-in stand with wall mount allows for easy benchtop measurement or storage

GD-K71D-HBR GD-K71D Smart Transmitter, Hydrogen Bromide (HBr), 0 - 9 ppm by RKI Instruments

The GD-K71D is a complete sample drawing gas monitor, including digital readout and alarm relays. A new gas sensor technology using an intelligent sensor for remote location calibration and setup is used. The new GD-K71D sensors are designed to provide a longer time period between calibrations. Calibration intervals have been extended to12 months of on-line service which equates to reduced maintenance cost. In addition, the sensors can be calibrated away from the gas detector installation, for example in a service area or off site. This eliminates the inconvenience of having calibration gases in the fab or monitoring location. GD-K71D easily connects to an existing PLC system and is ideal for applications needing a local readout or where a relay control is needed. The automatic zero correction software provides excellent long term stability and minimizes false alarms due to zero drift.

Features:

• LED digital display
• Sensor information and calibration is stored within sensor memory
• Several data transmission options available
• Zero suppression and correction
• Housing design for narrow wall mounting locations
• Self-diagnostic functions by microprocessor
• Electrochemical sensors for most semiconductor gases
• Built-in sampling pump
• Easy replacement of pump and sensor
• Two alarm levels with relays, plus trouble alarm
• 24VDC operation
• Optional NEMA 4X housing available

Applications:

• Semiconductor
• Chemical Processing
• Laboratory
• Manufacturing
• HVAC

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