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How to Design an Industrial Gas Detection System for Toxic and Flammable Gases

Thursday, April 22, 2010 - 10:00am

Industrial Gas Detection  Industrial Gas Detection2  Industrial Gas Detection3  Industrial Gas Detection4  Industrial Gas Detection5

Topics Covered:

  • Gas hazards…Flammable, Toxic, and Asphyxiant
  • Gas sensing technologies including.. Catalytic Bead, Electrochemical, and the newest technology Infrared
  • Care, maintenance, and calibration of the above technologies
  • Mounting and sensor location considerations
  • Local and remote indication, alarming, and networking
  • Discussion of Natural Gas, Methane, Oxygen and other applications
  • The Latest in Portable Gas Detection Units Including “Belt-Clip Units.”
  • Honeywell gas book (free to each attendee) that discusses all the above along with key data on hundreds of gases
  • The latest NFPA update on regulations requiring Natural Gas detectors in Boiler Rooms

What You Will Learn:

Keeping personnel and equipment safe is becoming more of a priority than ever. Industrial Controls and Honeywell Analytics can help you keep your gas safety systems up to date and functional while helping reduce the operating costs of these systems. You will learn the upgrade path for legacy systems and how investing in newer technology, such as infrared detectors, can save you time and money by reducing the need to replace sensors regularly.

We will also discuss how the NFPA is changing the code for fuel gas detection. We can help you become compliant with new and existing codes in your boiler rooms and process areas.

Who Should Attend:  Any Industrial customers who use analytical equipment such as:

  • Chemical plants and refineries
  • Power Generation Plants
  • Boilerhouse Personnel
  • Water and Wastewater plants
  • Pulp and Paper
  • Plastic and Textiles
  • Heat Treating Facilities that have Gas Fired Furnaces
  • Engineering and Consulting Firms


Hello everyone and welcome to the webinar. My name is Jennifer Adlestein and I am the marketing assistant for Industrial Controls. Today's webinar is how to design an industrial gas detection system for toxic and flammable gases. The presentation will take about forty-five minutes and after the presentation we will take some time to answer your questions. During the presentation, feel free to enter your questions into the chat interface on the right-hand side of your screen. We will also open it up to voice questions where you can raise your hand if this option is only for people with phone connections and not those using their computer microphones. Now we are going to hear from our speakers.

Our first speaker is Bill Hopler and he has a BS Degree in Electrical Engineering from Rutgers, The State University of New Jersey. He worked for 13 years as a sales engineer for Honeywell’s Process Management Division, and has worked for Industrial Controls for the last 14 years. Bill teaches customer seminars on Flow Technology, Industrial Wireless Solutions, and Gas Detection.

Our second speaker is Lori Levangie and she is one of Honeywell’s Gas Detection Regional Managers. Honeywell is now the worlds’ largest manufacturer of sensors and currently sells brands such as Seiger, Zellweiger, Vulcain, Manning, Lumidor, B&W and MDA MST. She has 17 years of experience in specifying, designing, and starting up simple and complex gas detection systems using Honeywell, Scott Health and Safety, and MSA. At this time, I will pass the presentation off to Bill.


Thank you, Jen. For those of you on the webinar that know us and don't know us, Industrial Controls has a wide range of product lines in the process instrumentation field. Things like temperature, pressure, flow, pH, in fact we did a webinar last month on pH, conductivity, humidity, controllers, recorders, indicators. We did a seminar last month on Honeywell pH and today our subject is gas detection. Some of the other things that we do, we are very involved in all kinds of valves from solenoids up to completely automated valves. Next month, one of our webinars are topic is going to be how to save energy in your combustion controls area. We have 17 offices in 22 states and at the end of the presentation you will see our contact information. If you would like to get more information, sign up for our guestbook or have one of our people come out and make a sales call.

So let's talk about an introduction to gas hazards. The name gas comes from the word chaos. It is basically a swarm of molecules moving randomly and chaotically and gases fill any available volume and due to their very high speed and they move rapidly. That is one of the most challenging things in designing a gas detection system. There are different gases around us in everyday life. The air that we breathe is made up of oxygen and nitrogen. A natural gas known as methane is used to heat most homes, for heating and cooking and of course in the industrial environment. And car exhaust, which produces gases which contain deadly carbon monoxide and carbon dioxide. Gases can be lighter than air, heavier than air or about the same density. This is one of the challenges in designing a gas system is to determine what the properties are of the gas we are looking to measure. Gases can have an odor like the material the gas companies put in the natural gas so you can sense a leak by smell. Many other gases are odorless. Gases can have a color or they could be colorless. The three main types of gas hazards are flammable, toxic and asphyxiant. Flammable, obviously those things that can risk a fire or explosion like recently happened on the oil rig in the Gulf of Mexico. Toxic, which is the risk of poisoning and asphyxiant which is the lack of or oxygen deficiency.

So the flammable risks need three things in order to become a dangerous situation. One, a source of ignition, the presence of oxygen and the fuel in the form of either a gas or a vapor. That is the flammable style. Then you have got the toxic applications. Some gases are poisonous and can be very dangerous to life at very low concentrations even down to parts per billion. Some toxic gases have strong smells like the distinctive rotten egg smell of H2S. Others are completely odorless like carbon monoxide. The third category of gas detection is oxygen deficiency. We obviously breathe oxygen in the air to live in the air is made up of several different gases including oxygen. The normal concentration of oxygen in the air we breathe is around 20.9%. When that oxygen level dips below 19.5%, the air is considered to be oxygen deficient and when concentrations dip below 16%, they are considered unsafe for human habitation. So with that now I'm going to turn it over to Lori to talk about the needs for gas detection.


Good morning. On behalf of Honeywell, I welcome everybody to the webinar. I will be talking to you a little bit about the need for gas detection and how to design a solid gas detection system. There are many areas that require gas detection. One of the largest users of gas detection is chemical plants. They use wide ranges of both flammable and toxic gases in their manufacturing processes or they off gas these gases. Typical applications include raw material storage, process areas, laboratories, pump rows, compressor stations, loading and unloading areas in the typical gases that you will see in chemical plants include general hydrocarbons, some acids such as hydrogen fluoride, hydrogen chloride and various toxics including hydrogen sulfide and ammonia.

Many power stations use gas detection primarily natural gas and hydrogen. On the toxic side of the business, you will find ammonia used for nox reduction for power stations. Traditionally coal and oil have been used as the main fuel for power stations but more and more you will see various uses of fuel.

Waste water treatment plants are huge users of gas detection as well. You will see gases such as hydrogen sulfide, methane, oxygen possibly some carbon monoxide as well. You will see the typical applications for use is digesters, plant sumps, H2S scrubbers, and pumps.

Boiler rooms are starting to use gas detection more and more primarily around the leaking joints were natural gas comes into the facility. The NFP code 54, the national fuel gas code, is currently in the process of changing to reflect the use of gas detection in these areas.

Hospitals and medical centers are also users of gas protection. You will see large bulk cryogenic tanks on the side of each building which may produce a hazard for oxygen depletion. A few things such as carbon monoxide and chlorine and ammonia and flammable gases such as methane and their boiler room also for heating the facility. Typical applications are also refrigeration plants especially where you will see things like plasma being stored.

Tunnels and subways are using gas detection more and more frequently now than they have been in the past. You will see things like open path detection where a beam of light is run across the ceiling of a tunnel to detect for hazardous gases such as flammable gases, natural gas and methane. You also see carbon monoxide detectors and nitrogen dioxide detectors which are off gas of diesel fuel.

This brings us to the principle of gas detection and how it works. Three main ways gas detection is manufactured is via catalytic bead, electrochemical sensors, or infrared. There are other technologies available today but we are going to talk about these three primary ones. The catalytic bead was created originally Samuel Hunter Christie and the concept is basically Wheatstone bridge and was popularized by Charles Wheatstone where the name came from. The catalytic bead detects any flammable gases or basically anything that has a LEL associated with it, a lower explosive limit. The speed of response of a typical catalytic bead is about 10 to 20 seconds. The sensitivity is 0 to 100% LEL with a lower detectable limit normally around 2 to 4% LEL. One thing to be careful about with catalytic bead detection is it is not failsafe. There are poisons such as sulfurs, silicone, phosphors, and leads that will affect performance of the catalytic bead as well as chlorine and fluorinated hydrocarbons which will actually etch the catalytic bead. The costs of the catalytic bead detector are usually low in the initial cost structure but later on down the road they do become high maintenance and you have a higher cost of maintenance. How a catalytic bead works is inside the sensor itself there are two small beads. They're about the size of a tip of a pen. One of the beads is completely inert. It is usually made of glass or ceramic. The other bead is coated with some sort of catalyst. Both of the beads are heated to very high temperatures up to 500°. When you're target gas comes into the sensor it starts to break down on both of these heads of these beads and thus the bead that has the catalyst on it will burn a little bit hotter than the bead that does not. We measure the difference of the resistance of the energy going through the bead and that difference is directly proportional to how much gas you have present.

Electrochemical technology is used for toxic gas detection. How electrochemical technology works is basically a small container or a small vial that is filled with electrolytes. There is permeable membrane at the bottom of the container and then there is some sort of connection at the top of the container. As your target gas comes into the electrolyte, it produces a current, causes a reaction. That reaction then comes up to the top of the sensor via energy into a transmitter in the transmitter will transmit that signal as a 4 to 20 or a relay. The typical life of an electrochemical sensor is about 1 to 2 years. They are not failsafe which means that they do need oxygen to function and when they are no longer sensing gas they may go to zero. There are technologies available today. Honeywell does have a technology where we actually ping that electrolyte to make sure that the sensor remains good and we do alarm at the transmitter.

Infrared gas detection is used to detect hydrocarbon gases or combustible gases. How infrared gas detection works is basically there is a chamber inside a transmitter in that chamber is filled with a certain wavelength of infrared line. When the hydrocarbon comes in contact with the infrared light, it will start absorbing certain wavelength. The manufacturer basically measures that absorption. That absorption is directly proportional to the amount of gases present.

NDIR, this term is used in many gas detection manufacturers. This is basically the main means in the main way we detect hydrocarbon gases in the field in safety instrumentation. NDIR is the non-dispersive infrared and what this means is just the chamber technology where you have a specific area that is filled with that infrared light and then they gas absorbs in that specific area. This is the typical infrared you will see in the field today. One really nice thing about an infrared is it works and completely oxygen free environments. It is failsafe. Should anything happen to it, either the emitter be burned out, the lens gets scratched, there's bugs, dirt, debris, it will fault and give you a reading. Initially you are going to spend a little bit more on infrared up front however the long-term costs are low because it doesn't require calibration. It only requires some testing. Also speed of response on infrared is very important. Honeywell currently provide an infrared that has the speed of response faster than a catalytic bead at less than 5 seconds to 90.

So we look at the comparison of gas detection techniques. Catalytic beads, it is a simple measurement. It measures all types of flammable gases and it is a low-cost alternative. The disadvantages of catalytic beads it can be poisoned by lead. It can be etched by chlorine. It can also be desensitized by sulfides. Electrochemical technology, it measures all toxic gas. Detections are generally low concentrations and wide ranges of gases can be detected. One of the disadvantages of electrochemical is that it does require oxygen to work and it does need to be calibrated and there is maintenance involved. Infrared technology is used primarily for hydrocarbons related gases. It is less sensitive to calibration errors. It does not fail to zero. Some of the disadvantages that it is a little bit more costly upfront and it measures higher levels of flammable gases.

Gas properties, this is a good indication of the flammable risk of gas and what LEL and UEL is referred to. In the gas detection world, gas detection companies will measure explosive gases as a lower explosive limit. Each gas that is flammable does have a LEL associated with it. What we mean by the LEL is the minimum amount of fuel that you will need an atmosphere to have a fire. There are different standards to this LEL. The NFPA and CSA standards can differ as well as European standards. You also have to think about the classification of a facility when you are looking at gas detection such as class 1 group A, B, and C. The gas detection is categorized by grouping. The flashpoint of a flammable liquid is the lowest temperature at which the surface of the liquid emits sufficient vapors to be ignited by a small flame. Not to be confused with the ignition temperature, which refers directly to temperature of flashpoint.

Vapor density, we look at vapor density in the gas detection world to basically show you where to put the sensor for gas detection. Methane, for example is a vapor density of .55 which means it is lighter than air and it will go towards the ceiling. So your gas detection would need to be placed more towards the ceiling. Vapor density is relative to air at one so we consider air to be one and then we measure the other gases above one and below one.

There are toxic gas limits. Time weighted average and short-term exposure limits, these two terms are used sometimes in compliance but as well they are used in six scan detection. The time weighted average is basically the amount of gas that can expose a person to over an eight hour and it is based on the average of concentration. The short-term exposure limit is the maximum allowable concentration over 10 to 15 minutes and that is by local and national regulations. The three units of measure which is parts per million and you can define those levels by referencing OSHA and NIOSH.

Oxygen deficiency, air is made up of several different gases including oxygen- nitrogen, oxygen, argon, and carbon dioxide. As Bill was saying earlier, went oxygen gets below 19.5% the air is considered oxygen deficient. Many companies will measure oxygen for personal safety and also to make sure that there is enough oxygen for their other related gas detection to function properly. You can find more information about short-term exposure limits, time weighted averages and LEL's in the Honeywell gas book. You can order the book directly through Industrial Controls or your local Honeywell representative. The slide looks very busy but it has a lot of information. The two pages that we are taking from the Honeywell gas book, it does reference various gases, the LEL's to help you make a better decision on the gas detection that you will need for your facility.

Which brings us to designing a gas detection system, so why do we do gas detection? We do gas detection primarily to safeguard life and property. This gas detection is used to safeguard more property in a larger area as well as people. It provides early warnings of hazardous conditions and by using this gas detection is that protection you are providing the opportunity for evacuation. It also satisfies the local fire codes and provides insurability for the employees. Another nice thing about gas detection, it addresses real and perceived safety concerns. So in an incident where an employee may feel that he is being poisoned by carbon monoxide, a gas detector at that facility for a period of time will confirm those basic concerns. Gas detection is a recommended practice. It is required by code in some states and is required by law.

So we go over to the points to consider when you are designing your gas detection system. You must first understand your application to identify the potential danger points, establish design goals, understand your gas characteristics, profiling your plant and also make sure that you are placing these gas detectors indoors as well as outdoors. By understanding the application, you need to understand the short-term exposure limits, the time weighted averages of the gases that you are detecting, the combustible levels of those gases as well as the density. It is also good to researcher local and federal regulations such as the local fire marshal.

When identifying potential danger points, you have to look at two different danger points, the release point and the receptor point. You have to look at where the gas is going to be coming from and where is it going to be going to. In order to have a solid gas collection system, you want to make sure that you tell the people inside the area to get out and tell the people outside the area don't go in. So a look at release point, we are looking at things like expansion joints. We're looking at things like seals and flanges. You're looking at decomposing materials in your runoff area. At your receptor point, you are looking at confined spaces. If you take into consideration your ventilation system, is a revelation system going to change when that gas goes at certain times of the day? Also, you want to make sure that you have some sort of notification or enunciation and really understand your process should you need to shut your process down. Gas detection can also do things like that. You can hook it up to solenoid valves, turnoffs, a gas stream or a cryogenic tank. Evacuation emergency response, make sure that you understand those protocols are for your individual company.

Determining your gas characteristics, as stated earlier you need to understand what the toxicity and LEL of each gas is. Also understand the vapor density. Where are these gases going to go once you have a leak? Understand how some gases will actually change composition such as dry ice which starts as a solid and then goes right into a gas. Understand the toxicity versus the flammability of each gas. Some gases of toxic as well as flammable but are detected at the toxic level because it is more deadly such as MTBE. Hydrolyzing gases and pyrolyzing gases, some gases with a mix with moisture in the air, even basic simple humidity will change composition such as fluorine which turns to hydrogen chloride in a very humid environment. Some gases are pyrolyzed such as nitrogen triflouride and seen as the off gas hydrogen fluoride. Understand oxygen enriched environments, gas mixing and the rate of evaporation as well.

Gas sensors should always be placed to ensure that a quantity of gas will pass by there in a normal relief scenario. Again, just understanding your ventilation, understanding your escape routes, understanding where the wind is blowing into the facility, where your doors are being opened, where the windows are. Just really understanding and making sure if there were to be a gas detection leak, it would eventually pass the gas detector.

Other elements for consideration, one of the biggest mistakes customers make is installing gas detectors where they are not accessible. Not making the gas detectors easy for calibration and maintenance will result in employees not maintaining their gas detectors. Make sure that you hire a qualified electrical engineer for wiring and installation. Make sure, in talking to your gas detection manufacturer about EMI and RFI.  Are your radio is going to affect what your gas detector will read? Will there be some sort of interference? Also understand oxygen levels. Some toxic gas electrochemical sensors require a minimum oxygen level to function which means the sensor will fail to zero and will read zero if there is no oxygen to allow it to work. Be aware of poisoning and inhibiting factors. We talked about chlorine. We talked about hydrogen chloride against the catalytic bead sensor.

Indoor detector placement guidelines- always operate detectors within the temperature limit. When you can't operate a gas detector in its temperature limits be sure to install something like the sample draw panel or use duct mounting configuration. Duct mounting configurations are very different from large areas where it is not economically feasible to put in multiple gas detectors. Make sure that water, moisture, dirt and dust are not present around your gas detector and that maintenance is continually done. You are going to locate the detectors with respect to the grade, floor and that operating level. Make sure that you are placing the gas detectors as close as possible to the leak source where possible. You can also conduct a smoke trace behavior study if you are in doubt of the wind direction at your facility.

There are very few published guidelines and there are no standards indicating the area or volume effectively protected by a diffusion gas sensor. So what gas detection companies will normally tell you is that the UL suggests a 900 ft.² ceiling space for each gas detector. This is a good sketch to show you the area of coverage from a normal gas detection system. You see in the center that is the gas detector and this is according to the NFPA 72 E standard and that is the standard on automatic fire detectors, smoke detectors. It says that each chapter must be placed within 30 feet of another in the detector will only see gases within a 15 foot radius, 30 foot diameter. We reference the NFPA standard because there is no current published standard for gas detectors. The closes that the gas detection company can reference is the standard for smoke detectors.

When you are placing gas detectors outdoors, you're going to use the same considerations that you did indoors. You're going to consider the angle and direction of prevailing winds. You're also going to take a look at the orientation of structures surrounding the terrain to make sure that you're not creating a confined space. The proximity of large quantities of toxic to personnel and equipment may require added detectors. Be sure that you understand where there may be possible entrapment of leaking gases and vapors within columns and low-lying areas or confined spaces. Make sure you understand where your sources of ignition may exist. An outdoor detector location, heavier than air gases, again gas detectors should be mounted at 18 inches above the floor or above the area that you are installing. For liquid spills, as close as possible to the vapor. The reason why gas detection manufactures will tell you that is because most liquids, heavy hydrocarbons assume very low vapor pressure and began the gas detector needs to touch the molecule to see it. Lighter than air gas detection, again, you're going to put that gas detector up towards the ceiling. They usually say about 6 to 8 feet above grade. When you're dealing with gases such as methane you're going to put it right up against the ceiling structure. When we looked at gas detection indoors, we set a 15 foot radius, 30 foot diameter. We're going to increase that grid we are doing outdoors detection. Gas detection outdoors, we basically increase that grid by 5 to 10 feet so we are going to put gas detectors every 10 to 15 feet. Now of course, it may become economically unfeasible for a company to do something like this so we do look at other gas detection options such as open pass detection, when you're running a beam of light down a facility. That will save time and it will save money on installation. Again, you are placing detectors between the probable release points and the work area.

General locations consideration, make sure that you always allow access to your gas detection system to be calibrated and tested. Sensors do have a finite light and they need to be calibrated and maintained regularly. Always locate the detectors using your local conditions knowledge and the lighter or heavier than air principles. Again, avoiding exposure to sources of high radiant heat on gas detectors, it may cause them stress. It may cause the screen to go blank. It may cause bleeding of a screen as well. Keeping the detectors away from moisture and chemicals, you are also avoiding false alarms. Avoid vibration and mechanical shock hazards as well. You're going to use shielded cables whenever possible and follow the correct grounding practices by the NFPA 70 standards.

We look at gas detection placement. This is a good sketch where you would mount gas detectors around the storage tank. You can see these are open pass detectors that we mounted around a simple storage tank. In another area, you can see we are protecting all of our wind directions and we are protecting our potential leak sources at the top of the tank. Here is the same type of diagram with horizontal tanks of fuel. You are mounting your detectors to all prevailing wind directions and you are also monitoring leak sources. The same thing with rail cars, you are protecting all of the wind directions and leak sources. These are the publications that were used directly to create the presentation. The NFPA/ANSI guidelines, NIOSH: pocket guide to chemical hazards, “The Key Considerations when Designing a Gas Detection System”, was published in chemical weekly. Actually, I think the date is incorrect. I think it was 1998 in chemical weekly that it was published so you could reference that as well.


I am not going to spend a whole lot of time on portables but there have been some recent technology increases and portable gas detectors which are an important part in any chemical or facility that has toxic or flammable gases. The nice part is the profile of these portable units has really been reduced. They are a belt clip devices that measure individual gases. There are belt clip devices that measure multiple gases and many of these solutions actually have data loggers know. So you can send somebody out to do a little bit of a survey, bring that gas detector back and load that up into a software program and see what the trend of those toxic or flammable gases are during that particular survey. You will see on our next slide we have a contact list. If you need or want any more information on the portables, please drop us an e-mail.

So in summary and in conclusion, that is the completion of our webinar slide presentation. As far as contact information is concerned, you will see my contact information- cell phone, office phone and e-mail. Our corporate office is in New Jersey. By the way this PowerPoint is going to be published on our website for viewing. If you want to recommend that to any of your colleagues that didn't have a chance to join us on the webinar but if you would like a copy of the Honeywell gas book, it is a total of around 82 pages. It reviews a lot of things we talked about today in a way of technologies, and a way of designing a system but most importantly it gives you the list of all the toxic and flammable gases in the lower explosive limit, flashpoints, vapor densities. It is just a really great reference book. So he sent us an e-mail or if you want us to come to your site to do a focused PowerPoint presentation on what we presented today or if you like for us to send out an engineer to do a site visit, please contact us through moreinfo@indutrialcontrolsonline.com. Thank you so much for your time and Jen do you want to go through some questions?


Yes, thank you guys. So at this time no read some of the questions that came through and you guys can address them. We had a question come through from Joe. He asks, can you tell us more about the NFPA code that you reference in your boiler slide?


The NFPA code that gas detection manufacturers use is the code of 72 which is a code used for fire detection and smoke detectors. We use that code because there is no code specific to gas detection and just also to let you know that there was a recent publication in a North Carolina newspaper, that the NFPA is reviewing article 54 to ensure that gas detection is used in cases where large amounts of gas and large amounts of methane is used and that is due to the recent explosions on the East Coast.


Okay, we received a second question and from Mark. How do you calibrate the infrared sensor to make sure that it is working?


There has been a lot of discussion about infrared technology and each manufacturer is different. Some manufacturers recommend quarterly calibration, some of them recommend twice a year, and some say that you don't have to calibrate the infrared detector at all. On behalf of Honeywell, I can tell you that the Honeywell gas detector does not require calibration. What we do want the customer to do is do routine bump testing so basically by applying the cap to the infrared and applying your gas you can make sure that it moves. The absorption of infrared light by a hydrocarbon is a standard and calibration is minimal.



You may want to mention for those transmitters that are above grade, where you have to use the latter, is there an option to bump test from the ground?


Another option you want to look for especially if you're detecting things like methane with an infrared is to make sure that your manufacturer does allow bump testing from floor level. The Honeywell detectors does allow bump testing from floor level just by running a simple flue from the IR down to the floor and running your gas up.


Explain the bump test.


Bump testing versus calibration, bump testing is just basically a mixture of gases that is applied to the infrared to make sure that it is responding accurately. Calibration is a way of adjusting the instrument to make sure it reads accurately.


So that is one of the beauties of the infrared technology is that you don't have to climb a ladder and do I calibration tests like you would on electrochemical or catalytic bead which are ones that we discussed in our presentation that do not have failsafe capabilities.


Okay, we have received another question from Bob. He asks do you have an application form that I can fill out to request a quote?


Yes, Honeywell can provide that to you as well as Industrial Controls. There is a formal application data sheet on larger projects that we do use with our customers to make sure that we understand their application fully.


And the nice part about that is it does ask some of the questions that we went over in the presentation so that you can discover those parameters and pick the proper technology for your fixed gas detection.


Okay, it looks like Mike Lawrence is raising his hand so he could ask his question directly to you. Mike, are you out there? Mike, do you have a question?

Mike: No.


Alright, well it looks like we are out of time today and I wanted to let everyone know if you missed any part of today's presentation, we will post a recorded version on our website and that is www.industrialcontrolsonline.com. Within the next couple of days, we will e-mail a link to the video and our contact information if you have any further questions or feedback for future webinars and as Bill said he is information is up on the screen now so you can jot that down. We also have a few more webinars coming up in May. On May 12, we will be running one on boiler upgrades that will save fuel and energy on industrial and commercial boilers from 50 hp and up. Also on May 19, we are running part three of the pneumatic series. So we will be sending out e-mail invitations soon and both will be up on our website under the online training section. I want to thank everyone today for attending and we look forward to having you guys back soon. Thanks everyone.



Bill Hopler has a BS Degree in Electrical Engineering from Rutgers, The State University of New Jersey. He worked for 13 years as a sales engineer for Honeywell’s Process Management Division, and has worked for Industrial Controls for the last 14 years. Bill teaches customer seminars on Flow Technology, Industrial Wireless Solutions, and Gas Detection.

Lori Levangie is one of Honeywell’s Gas Detection Regional Managers. Honeywell is now the worlds’ largest manufacturer of gas detection sensors and systems including brand names like Seiger, Zellweiger, Vulcain, Manning, Lumidor, and MDA. She has 17 years of experience in specifying, designing, and starting up simple and complex gas detection systems using Honeywell, Scott Health and Safety, and MSA.

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