Gas Analyzer

Circadian Analysis Module analyzes

2009-03-20T05:08:00.000-07:00

The Circadian Analysis Module analyzes data with daily patterns to reveal the underlying themes. The new module for LabChart for Windows is particularly useful to researchers completing hormonal and sleep studies as well as any long-term study of physiological variables. Both continuous and intermittent recordings can be analyzed.

Set-Up in Seconds and Analyze Hundreds of Hours of Data

In the Circadian Analysis Module's easy-to-use setup dialog you can quickly:

Select the data channels to be analyzed
Choose to analyze the entire channel, or just a selection
Customize the circadian period (day length) and start time to suit your recordings
Apply an exclusion filter to set upper and lower limits for data to be included in the analysis
Configure the appropriate averaging interval for your recording

See Your Recordings in Light and Shade

The new module's Averaging View calculates and plots the data trace for the Average Day. You can also overlay the data traces for every day being analyzed. The Averaging View can be set up with light on/off shading so you can easily demonstrate day and night.

EMG Analysis Software

2009-02-23T06:24:00.000-08:00

The EMG Analysis software is a research quality analysis program that implements a wide range of powerful analysis methods using Fast Fourier Transform (FFT) techniques as well as many traditional EMG analysis methods making it especially suitable for educational as well as research uses. This application, like the basic EMG Graphing program, fully supports all C3D formats as well as several older file formats and raw data from Dataq data acquisition systems for stand-alone functionality. Data can be processed and exported to third-party applications for additional analysis via C3D files or standard ASCII formatted files compatible with Excel, SAS and MATLAB etc.

This is the one of the most powerful, yet easy to use, software packages using FFT analysis that is available to both the clinician and researcher. The program reads EMG data directly from C3D files as well as the native file formats from B|T|S, Motion Analysis Corporation, Vicon Motion Systems. Written for the Kinesiologist driven environment, directly to clinical specifications, this software effortlessly delivers instant viewing and full color reports using sophisticated Frequency Spectrum, Power Spectrum and Muscle Correlation techniques. The EMG Analysis program includes all of the basic features of the EMG Graphing version of this program and added many analysis and data export options:

Gas analysis system

2009-02-22T07:22:00.000-08:00

Conditioning Systems
Every kind of gas analysis, either fairly straight forward single component analysis or complex multi component process gas analysis require application specific sample gas conditioning systems. These systems must deliver continuously reliable process data even under varying ambient and/ or process conditions.
It is quite obvious, that stack testing has other requirements than engine emission testing, EPA methods testing or process applications in the food industry just to name a few.

Bühler delivers modular designed prefabricated systems as mobile or stationary stand alone or 19” rack mount solutions and assists in planning application specific gas analysis systems on panels, in cubicles or analyser shelter.

Sample Gas Conditioning System SCS 19

Complete system for 19" rack
One or two gas streams
Modular design
Probe and cal gas controller

Wireless WAN Solutions

2009-02-21T16:47:00.000-08:00

Extend your network infrastructure with long range
outdoor wireless Ethernet connections

Trango's long range fixed wireless broadband Ethernet equipment is ideal for all types of wireless wide area network (WWAN) and wireless local area network (WLAN) applications. Trango outdoor wireless networking solutions allow you to quickly, easily, and cost effectively deploy reliable, high-speed, secure wireless IP connections between multiple remote locations at distances up to 45+ miles, and enable you to eliminate your costly leased lines and avoid expensive time consuming fiber trenching.
Wireless WAN Applications

Wireless WAN applications are endless for Trango long-range wireless Ethernet bridges. For example, a business may need to link its IT infrastructure to a few outlying buildings; a university or any school may need to provide internet access to dormitories or other buildings across campus; or a hospital may need to establish a secure link to a clinic across town so that doctors may securely exchange patient information over a high-speed connection.

Whether you need to a network connection across the street, across town, or from urban to rural areas, Trango wireless WAN/LAN building-to-building outdoor networks are ideal for any private enterprise or network operator that requires high-speed connectivity between two or more remote locations. Trango long range wireless wide area network (WWAN) solutions are well suited for a wide variety of industries and applications because they deliver high-capacity bandwidth, are extremely reliable, highly secure, and can be established with minimal effort and cost.

Licensed Point-to-Point Wireless WAN Radios

* TrangoLINK Giga® is a split-architecture (ODU/IDU) full duplex RF microwave system link that is both native Ethernet and native-TDM.
* TrangoLINK® Apex is an all-outdoor full duplex RF microwave radio that is native-Ethernet for 100% IP traffic.
* ATLAS 4900™ is an all-outdoor native Ethernet OFDM 4.9 GHz wireless bridge that operates in the licensed Public Safety band.

Unlicensed Point-to-Point Wireless WAN Radios

* TrangoLINK-45™ is an all-outdoor, native Ethernet, multi-band OFDM wireless Ethernet bridge that is capable of operation in 4 different 5 GHz bands (5.2, 5.3, 5.4, 5.8 GHz).
* TrangoLINK-10™ is an all-outdoor, native Ethernet 5.8 GHz wireless bridge.

Unlicensed Point-to-MultiPoint Wireless WAN Radios

For delivering point-to-multipoint (PtMP) broadband access wireless WAN connectivity from a central office to many remote offices, Trango offers these robust solutions.

* Access5830™ System 5.8 GHz broadband wireless access system delivers up to 10 Mbps up to 18 miles.
* Trango M2400S™ 2.4 GHz broadband wireless access system delivers up to 5 Mbps up to 25 miles.
* Trango M900S™ 900 MHz broadband wireless access system delivers up to 3 Mbps up to 20 miles.

Analyzers >> Network / Spectrum Analyzer Accessories

2009-02-19T23:30:00.001-08:00

There are a wide range of Network/Spectrum Analyzer Accessories that are associated with these instruments. Some are internal to the instrument and others are external components. Network/Spectrum Analyzer Accessories also include a wide range of optional and external active and passive components such as directional couplers, bridges, cables, down-converters, amplifiers, attenuators, terminations, and other unique test fixtures.

h2s analyzer suppliers

2009-02-09T02:53:00.000-08:00

H2S Analyzer is a UV-VIS diode array process spectrophotometer, which contains no moving parts. It is designed to address on-line applications that require fast, reliable and maintenance-free monitoring of concentrations, including both single- & multi-components. H2S analyzer operates at high pressure to simplify the sampling system.

Infrared Analyzer

2009-02-06T19:22:00.000-08:00

INFRARED ANALYZER

The above diagram provides a graphic representation of the basic design of an infrared analyzer which is used to measure breath alcohol concentrations. The design is based on the fact that specific wavelengths of infrared energy are absorbed by ethyl alcohol molecules. In its simplest form, the instrument's detector measures the change in the amount of a specific wavelength of infrared energy that passes from the infrared source (lamp), through the sample chamber and filter wheel to the detector. The change in response on the detector, as a breath sample is submitted to the sample chamber , is monitored and analyzed by a processor in the instrument. The change in the signal is used to calculate an alcohol concentration

The difference between the amount of infrared energy that reaches the detector when the sample chamber is free of compounds that absorb the infrared energy and the amount of infrared energy that reaches the detector when a subject's breath sample is within the sample chamber, provides an indication of the concentration of the absorbing substances in the sample . If ethanol was the only molecule found in a breath sample that would absorb energy at the wavelength being recorded by the detector, the calculated difference in infrared energy reaching the detector could be used by itself to establish the concentration of alcohol in the breath sample. Unfortunately this is not always the case.

In order to deal with the lack of specificity, it is important that the primary wavelength of infrared energy used to measure the concentration of alcohol is selected based upon its limited cross sensitivity to other substances that are commonly found in the human breath. The spinning filter wheel in the diagram above is used to modulate the light through several different filters allowing different wavelengths of infrared energy to be transmitted to the detector for analysis. The secondary wavelengths of energy are selected based upon the interfering compounds that could be found in a human breath sample. If these compounds are identified and are in concentrations that would adversely effect the calculated ethanol result, the analysis can be aborted.

One other important point is that the differing concentrations of alcohol or other energy absorbing compounds found in the subject's breath sample are not in a one to one relationship with the amount of energy that reaches the detector. In other words, a .050 alcohol concentration may absorb X units of infrared energy, but a .200 will not absorb 4X units of infrared energy. This inherent non-linearity can be overcome by performing a multi-point calibration. To ensure that the instrument is properly quantifying alcohol and the other substances, it would be prudent to perform multi-point accuracy checks for each substance of interest and ensure proper calibration over the entire range of substances and concentrations.

Finally, infrared systems require power to light the IR source, heat the sample chamber, power the light modulator and drive the detector and associated circuits. Historically, the signal from the detector has been small relative to the noise generated in the system. This has made it difficult to resolve changes in the signal when low level concentrations of alcohol are presented to the system. To solve this problem, several manufacturers have included cooled detectors. These systems require additional power, but the cooled detector decreases the noise on the detector and enhances the instrument's performance at the low alcohol

Gas Analyzer

2009-01-23T19:49:00.000-08:00

The Thermal and Evolved Gas Analyzer (TEGA) is a scientific instrument aboard the Phoenix spacecraft. TEGA's design is based on experience gained from the failed Mars Polar Lander. Soil samples taken from the Martian surface by the robot arm are eventually delivered to the TEGA, where they are heated in an oven to about 1,000ºC. This heat causes the volatile compounds to be given off as gases which are sent to a mass spectrometer for analysis. This spectrometer is adjusted to measure particularly the isotope ratios for hydrogen, oxygen, carbon, nitrogen, and heavier gases. Detection values as low as 10 parts per billion. The Phoenix TEGA has 8 ovens, which are enough for 8 samples.

A residual gas analyzer (RGA) is a small and usually rugged mass spectrometer, typically designed for process control and contamination monitoring in the semiconductor industry. Utilizing quadrupole technology, there exists two implementations, utilizing either an open ion source (OIS) or a closed ion source (CIS). RGAs may be found in high vacuum applications such as research chambers, surface science setups, accelerators, scanning microscopes, etc. RGAs are used in most cases to monitor the quality of the vacuum and easily detect minute traces of impurities in the low-pressure gas environment. These impurities can be measured down to 10 − 14 Torr levels, possessing sub-ppm detectability in the absence of background interferences.

RGAs would also be used as sensitive in-situ, helium leak detectors. With vacuum systems pumped down to lower than 10 - 5Torr—checking of the integrity of the vacuum seals and the quality of the vacuum—air leaks, virtual leaks and other contaminants at low levels may be detected before a process is initiated.

Brimrose NIR Analyzer

2009-01-22T16:33:00.001-08:00

A new series of miniature near-infrared (NIR) spectrometers is said to offer a cost-effective tool for inspecting incoming raw materials and product quality control. Compact, battery-powered Model 5030 ATOF-NIR Portable Analyzer from Brimrose Corp. of America, Baltimore, allows laboratory tests to be performed anywhere in a plant environment. The instrument, which sells for $28,000 (compared with $40,000 for larger units), is reportedly insensitive to ambient light, vibration, dust, and dirt. Its design allows for quick switchover from solids to liquids, and results appear instantly on its LCD. Applications include material identification or measurement of moisture content and active-ingredient levels. Once the instrument is calibrated, it reportedly can be used by an inexperienced operator.

Dual IR Gas Analyzer

2009-01-22T04:07:00.000-08:00

The Model 9000MGA is a Series III microprocessor-based gas analyzer featuring gas filter correlation infrared measurement and a paramagnetic oxygen module. Up to three gases may be measured in a single 3 RU high standard Series III instrument case.
High and low concentration analyzers employ a unique dual length optical path for drift-free, linear operation.

2 or 3 channel

Fast Response

3 Ranges per channel

RS232
AK Protocol

4-20mA & 0-10V
Chart outputs

Menu Diagnostics

2 year warranty

Available in the following
standard configurations:

CO+CO2

CO+CO2+O2

CO+NO

CO+NO+O2

HiCO+LoCO

HiCO+LoCO+O2

Consult us for
other configurations
not shown here

We are excited about getting this product. We have fielded many questions in the past and turned away countless product inquiries for high accuracy, multigas applications. This is the only multigas Gas Filter Correlation Infrared (GFC/IR) gas analyzer available anywhere. This equipment can also be outfitted with a paramagnetic oxygen module.
Based on the proven, 7000FM Series GFC/IR and Model 8000M Paramagnetic oxygen gas analyzers, the 9000MGA is a much higher quality alternative to drifty single beam IR and fuel cell oxygen multigas analyzers that are currently available.
Save yourself the trouble and disappointment of buying something that won't work properly. The 9000MGA is available now and ideally suited for combustion research / combustion analysis applications.

The standard 3-rack unit tall, Series III instrument case has up to three sets of keypads and operator displays on the front panel. Each channel may be operated seperately (as a seperate gas analyzer) and plumbing connections may be easily configured at the rear panel for this type of operation. This is a dry-basis measuring instrument so it must be used on a dry or conditioned gas stream. A series 200 gas conditioner or similar chiller is necessary for measuring raw exhaust and combustion gases directly.

Selecting a protocol analyzer

2009-01-21T04:07:00.000-08:00

Consultants have used a protocol analyzer or "sniffer" to help identify the source of problems on our network. I have been thinking about adding a tool like this to our collection but wasn't sure which one to use?
-- via the Internet

Choosing a protocol analyzer is not something that you should jump right into. There are several good candidates out there. The three most popular ones that I know of are Sniffer from Sniffer Technologies (www.sniffer.com aka Network Associates), Etherpeek from www.wildpackets.com and Ethereal from www.ethereal.com. I used to recommend a fourth candidate from Novell but they seem to have stopped supporting their software based analyzer. I haven't seen any new protocol decodes released for several years.

The cost of these ranges from free (in the case of Ethereal) to more than $10,000 for a fully equipped Sniffer package from Network Associates. I encourage you to get an eval copy of the above mentioned sniffers and run them through their paces. Etherpeek and Ethereal can be downloaded while Sniffer will require you to fill out a form and someone will call you in a couple of days to follow up.

Economical Ammonia Analyzer

2009-01-21T04:03:00.000-08:00

* High Precision
* High Sensitivity
* Simple to Use
* Extremely Wide Dynamic Range
* Economical of Own and Operate

LGR’s Economical Ammonia Analyzer (EAA) provides sensitive measurements of ammonia in ambient air or in industrial process flows with extremely high precision and sensitivity. No longer do you have to spend a lot of money or wait a long time to measure ammonia with high sensitivity – LGR’s EAA provides measurements every second with ppbv-level precision. In addition, the EAA can report measurements quickly over a very wide range of ammonia concentrations. The instrument, based on LGR’s cavity enhanced laser absorption spectroscopy, is simple to use, inexpensive to operate, and includes all components (internal vacuum pump, keyboard,mouse, video monitor) to start recording data within minutes. Other atmospheric gases, including water vapor, carbon dioxide and methane, do not interfere with the ammonia measurements. The instrument includes an internal computer that can store data practically indefinitely on its internal hard drive (for unattended long-term operation), and that can send real-time data to a data logger through its analog and digital (RS232 serial) outputs. In addition, an Ethernet connection allows remote access to data files stored on the instrument’s hard drive. LGR’s EAA provides the high quality data necessary for the most demanding applications including semiconductor process monitoring and atmospheric trace gas monitoring. For customers interested in the highest precision with extremely fast response time, LGR offers the Trace Ammonia Analyzer.

Trace Ammonia Analyzer

2009-01-21T04:01:00.001-08:00

* Unparalleled Precision
* Ultra-high Sensitivity
* Extremely Fast Response

LGR’s Trace Ammonia Analyzer (TAA) provides fast measurements of ammonia in ambient air with unparalleled precision and sensitivity. No longer do you have to wait for minutes before getting a useful reading – LGR’s TAA provides measurements every second with sub-ppbv precision. In addition, the TAA can report measurements quickly over a wide range of ammonia concentrations. For your convenience, we offer two versions of the TAA. If you require the fastest response rate possible (data rate up to 20 Hz), you will want to use our Trace Ammonia Analyzer - Fast. For applications requiring measurements of NH3 with highest accuracy, you’ll want the Trace Ammonia Analyzer – High Accuracy. In general, LGR Analyzers are not adversely affected by other atmospheric gases (no cross interferences) or changes in atmospheric pressure. Due to our low-power requirements, LGR analyzers may be operated on battery power with an appropriate AC/DC voltage inverter.

The Trace Ammonia Analyzer - Fast is designed to suit many applications including eddy correlation flux measurements using established micrometeorological techniques, which require response rates above 10 Hz.

The Trace Ammonia Analyzer – High Accuracy is designed for applications that require the highest sensitivity, precision and accuracy like semiconductor process monitoring and ambient air monitoring.

For customers interested in a less expensive ammonia analyzer with very high precision and fast response time, LGR offers the Economical Ammonia Analyzer.

Deep-Sea Gas Analyzers

2009-01-21T03:58:00.002-08:00

The Deep-Sea Gas Analyzer provides an accurate measurement of a variety of gases at depths of up to 2500 meters. The instrument employs a membrane gas extractor and is capable of measuring virtually any gas in LGR’s catalog, including CH4, CO2, and various stable isotopomers. Self-sustained, remote operation is possible using the internal battery, gas handling system, and data storage. Possible applications include carbon sequestration in ocean waters, methane-hydrate studies, and hydrothermal-vent effluent analysis.
As described in the Theory Section (on www.lgrinc.com), the measurement strategy is based on high-resolution direct-absorption spectroscopy. As a result, the instrument is self-calibrating and provides an absolute, accurate gas concentration without reference standards. An internal computer can store data practically indefinitely for applications requiring unattended long-term standalone operation. These analyzers can also send real-time data to a data logger through analog, digital (RS232), and Ethernet outputs.

CO2 Isotope Analyzer

2009-01-21T03:58:00.001-08:00

* Measures 13C/12C in carbon dioxide
* Extremely wide measurement range
* Low power requirement (120 W with internal pump)
* Easy to use

The CO2 Isotope Analyzer is an autonomous instrument capable of measuring the 13C/12C ratio in ambient carbon dioxide with better than 0.25‰ repeatability (for an integration time of 60 seconds) and without the need for costly consumables. This is possible because the instrument itself is built around conventional telecommunications-grade diode lasers that operate in the near-infrared spectral region. In addition, since the measurement strategy is based on high-resolution direct-absorption spectroscopy (see www.LGRinc.com, Theory Section), the instrument is not affected by other atmospheric gases or by changes in ambient atmospheric pressure. Thus the need for regular calibration with expensive reference gases is also significantly reduced compared with traditional analytical instruments.
The instrument includes an internal computer that can store data practically indefinitely on its hard drive (for applications requiring unattended long-term standalone operation), and send real-time data to a data logger through its analog, digital (RS232), and Ethernet outputs.

Methane Isotope Analyzer

2009-01-21T03:56:00.001-08:00

* Field deployable
* Easy to use
* Unsurpassed precision
* Low power

Due to its rugged, field-portable packaging, the Methane Isotope Analyzer is ideally suited for studies of methanogenic bacteria, methane hydrates, hydrothermal vent effluents, and other applications involving isotropic ratios in elevated levels of methane (>500 ppmv). The Analyzer provides parts per mil accuracy when measuring the carbon isotope ratio (13C/12C) of methane with precision better than 1‰ and a rapid response time (2 seconds). Because it does not require any sample preparation or user-intervention, this instrument also enables long-term methane isotope monitoring studies.
Based on high-resolution direct absorption spectroscopy, (for Theory go to lgrinc.com), the Methane Isotope Analyzer is self-calibrating and provides an absolute, accurate measurement of 13C/12C in methane without the need for expensive reference gases.
The instrument includes an internal computer that can store data practically indefinitely on its internal hard drive (for applications requiring unattended long-term operation) and send real-time data to a data logger through its analog and digital (RS232) outputs. In addition, an Ethernet connection allows remote access to data files stored on the instrument’s hard drive.

Fast Methane Analyzer

2009-01-21T03:55:00.000-08:00

These instruments are designed to work in ambient air and to deliver accurate results at rapid response rates. If you require the fastest response rate possible (data rate up to 20 Hz), you will want to use our Fast Methane Analyzer. For applications requiring measurements of CH4 and CO2, both our Fast Greenhouse Gas Analyzer and our Methane/Carbon Dioxide Analyzer measure both gases simultaneously. In general, LGR Analyzers are not adversely affected by other atmospheric gases (no cross interferences) or changes in ambient atmospheric pressure (no pressure broadening effects). Due to our low-power requirements, LGR analyzers may be operated on DC battery power, with an appropriate voltage inverter, and still maintain their inherent accuracy.

The Fast Methane Analyzer is designed to suit many applications including eddy correlation flux measurements using established micrometeorological techniques, chamber flux measurements, and leak detection from natural gas pipelines.

As described in the Theory Section, the measurement strategy is based on high-resolution direct-absorption spectroscopy. As a result, the instrument is effectively self-calibrating. (Under extreme conditions—such as following shipment—you may wish to recalibrate the instrument. There is a Calibration mode available for this on each instrument.) Each LGR instrument includes an internal computer that can store data practically indefinitely on its internal hard drive (for applications requiring unattended operation), and send real-time data to a data logger through its analog and digital (RS232) outputs. In addition, an Ethernet connection allows remote access to data files stored on the instrument’s hard drive.

Trace Ammonia Analyzer

2009-01-21T03:53:00.000-08:00