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Gas Sensing Blog

  • Particulate Matter (PM) sensor

    A new PM (Particulate Matter) sensor will be released in September and is designed to simultaneously measure PM2.5 and PM10 for indoor and outdoor use. This portable particulate monitor will display real-time measurements of particulate matter. (See picture of the display below)

    Particulate Meter readout

    The PM sensor will need to be used with the portable base Series 200, Series 300, or Series 500 that gives the digital readout of the current particulate matter measurement.  Like the other Aeroqual sensors, the PM sensor head can be swapped around and the same base can be used with up to 30 different gas sensors.

    Particulate Matter Sensor

    From the manufacturer Aeroqual: "Field tests have shown the portable particulate monitor provides useful data when compared to traditional ‘reference’ methods. This data will be made available on commercial release of the product."

    GasSensing is excited to offer this new PM sensor in September as we feel it will be a great addition to the Aeroqual sensor line.  In addition to being able to purchase this sensor from GasSensing, we will be offering the PM10/PM2.5 as a rental sensor with the Series 500.

    Feel free to contact us with questions or register your interest in the PM10/PM2.5 Sensor.

  • Wireless Gas Monitoring

    Wireless gas monitoring

    Recently Gas-Sensing introduced a new accessory making it possible to connect gas monitors to the internet. We call this accessory the Wireless Monitoring and Data Logging Kit. This has sparked a lot of interest and we have had excellent feedback from our customers who have purchased and are using this kit.

    How it works

    The Wireless Monitoring and Data Logging Kit works by wiring a current or voltage sensor to the analog outputs, which correspond with the gas concentration on a fixed gas monitor. The current or voltage sensor communicates with a gateway which is connected to the internet, and finally to view and collect the data in real time, you simply open up the online portal with the credentials we provide you.

    Wireless gas monitoring How the wireless monitoring and data logging kit works

    Wireless Sensor                             Wireless Gateway                              Online Portal

    This essentially makes any fixed mount gas monitor we offer wireless and IoT enabled (Internet of Things).

    Advantages to connecting a gas monitor to the internet:

    • Knowledge of gas concentrations anytime, from anywhere by simply opening our app on a smartphone.
    • Free email and SMS text message alerts for alarming situations.
    • 24/7 data logging to view trends over a given amount of time.
    • No monthly fees.

    This accessory will be wired and mounted on your gas monitor before shipment, making this as user friendly as possible.

    Here is one of the success stories we have had since launching the Wireless Monitoring and Data Logging Kit.

    Brandon works for a University and sterilizes laboratories with high concentrations of Hydrogen Peroxide. He would typically treat 3 rooms simultaneously, and all three rooms were connected to a hallway.

    Before contacting Gas Sensing he was unsure of the Hydrogen Peroxide levels achieved  during a treatment inside of the rooms. He also had to sit in the hallway with a handheld monitor during the entire treatment  (4-5 Hours).

    So we provided a simple solution.

    Wireless gas monitoring Wireless monitoring and data logging kit for Hydrogen Peroxide

    We provided him with 3) 0-1000 PPM Hydrogen Peroxide sensors for the rooms being treated, and 1) 0-10 PPM Hydrogen Peroxide Sensor for the hallway to detect any possible leaks.

    This was using the B12 2 Wire Transmitter from ATI, with the remote monitoring and data logging accessory attached.

    This way Brandon could open up the online portal to see his hydrogen peroxide concentrations in real time, and set notifications when specific conditions are met.

    online portal Online portal to view gas concentrations remotely

    This is what Brandon had to say after using these products:

    “ This is the perfect set-up for any facility or company that has to do large scale decontamination projects. It eliminates having to run cables under doors then going back and trying to keep the VHP from leaking out. I’m really impressed because it made my life and job 100x easier. Now I don’t have to sit in the hallway for hours, I can just set the monitor outside and have it send me a notification if it senses anything above 1 PPM! “

    Click here to check out our page on the Wireless Monitoring and Data logging Kit to learn more.


    Contact us to assist you with your wireless gas monitoring application!

  • Aeroqual Replacement Parts

    We realize things get lost, misplaced, or sometimes it's just handy to have another cord. That's why we recently added many of the replacement accessories for the Aeroqual units to our website.  The new accessories that can be found on Gas-Sensings website are:

    Replacement Power Cord

    The replacement power cord for the S200, S300, S500, SM70 and Series 930 Gas Monitors. The R18 is the new power cord vs the R20 can be used with the older style units that use the NIMH batteries.


    CONPS2Y is the 2 way connection cable that can be used with the S500 Monitor when you need both the Temperature & Relative Humidity (TRH) sensor and Computer cable (R19) plugged into the unit base, this cord gives you the ability to do so.

    Aeroqual CONPS2Y

    R19 Cable

    The R19 cable is used to connect the S-500 Monitor to the USB in your computer for data transfer. This cable is 6 feet long.

    R19 Monitor to PC Cable


    The R17 is a RS485 to USB converter cable that is used with the S900, S930, S940, and SM70 for data transfer to your computer.

    R17 RS485 to USB Converter

    Display Label

    The Aeroqual label on your Series 200, 300, 500 might have pealed off over time.  The replacement display label comes as an easy to apply sticker.

    Aeroqual Display Label

    Aeroqual Display

    If the LED screen on your Aeroqual Series 200, 300, 500 goes bad you can purchase a replacement display to install in your device.

    Aerqual LED Display

    Can't find the replacement piece or accessory you are looking for?  Give us a call or e-mail us for help.

  • Renting Gas Detection Equipment

    Rental gas detection equipment is one of the services that we offer to allow our customer who are unsure of the level of toxic gas they detecting, or for short term applications.  We offer both weekly and monthly rental rates based on your required use time. Even if you start off with a weekly rental and then decide that a month would be better, it's easy to upgrade! We currently offer the C16 PortaSens II as our rental device with the option of 6 different gas sensors.

    Gas Detection Rental Equipment C16 C16 PortaSens II Rental

    Sensor Options

    Ozone 0-2 ppm
    Oxygen 0-25%
    Chlorine 0-2 ppm
    Chlorine Dioxide 0-2 ppm
    Hydrogen Chloride 0-20 ppm
    Hydrogen Selenide 0-1000 ppb

    There are many different gas sensors that can be used with the C16, so if you don't see the gas you require on the list, please give us a call to see if we can meet your needs.

    The rental process:

    • Place the order on our website or phone using a credit card
    • We ship the rental to your location using your preferred shipping carrier
    • Rental period of 7 or 30 days begins when the device arrives to your location
    • Use the device for your rental period (7 or 30 days)
    • Give us a call if you want to extend your rental time
    • Rental period ends when you ship the device back to us using your preferred shipping carrier
    • We receive the device and check for proper operation, calibrate if necessary and get it ready for the next customer
  • Why buy new when used will do?

    We recently added a few great used gas detection devices to the growing used section of our website.  Check this out below:


    API Model 454 - $2,500

    API ozone analyzer Model 454 0-150 g/m3 range API Model 454 Ozone Analyzer

    The API 454 is a high concentration ozone analyzer designed to measure ozone gas in a process gas stream or measure output of your ozone generator.  This is one of the most popular ozone analyzers for this purpose due to the simplicity of use, and reliability of the device.  


    IN-USA Mini-Hicon - $1,750

    Measure ozone up to 150 gamma IN-USA Mini-Hicon Ozone Analyzer

    The IN-USA Mini-Hicon  is the IN-USA version of the Model 454 ozone analyzer from API Teledyne.  This is also a DIN mount ozone analyzer that measures ozone gas up to 150 g/m3.  Great to measure ozone from your ozone generator.

    Need to learn how to measure output from your ozone generator?  See the great info page below:


  • A21 Gas Sampler

    The ATI A21 Gas Sampler is a now up on GasSensings website and available for purchase.

    A21 Gas Sampler A21 Gas Sampler

    The A21 Gas Sampler is designed to draw a gas sample from a duct, vent stack, enclosed space or hard to reach location and deliver a gas sample to your monitor that can then be located in a more convenient spot.  The sensor can then be located more remotely as the pump that is built into the A21 pulls the gas back to the main monitoring device and will ensure reliable gas sample measurement. It also comes with mechanisms that help to ensure reliable sample measurement. There is a flowmeter on the front panel that allows you to adjust the sample flowrate (typically around 500 cc/min).  Another important part of this device is a loss of flow detector that alerts when the system notes loss of flow or low flow that could lead to inaccuracies in the sample measurement.

    The A21 was designed to be used with the D12 Toxic Gas Transmitter or the B12 Gas Transmitter but can be used with a variety of monitors where you need to pull a sample from a place that is difficult to access.  It can be fabricated to be powered by either 120 VAC or 12 VDC.

    If you aren't sure if this device will work with your current set up, contact us and we'd be happy to figure out a detection system that would be best for you!

  • Gas Sensings Accessories Drop Down

    We recently updated the navigation under the ACCESSORIES section of our website as we have been adding a lot of new products and want to ensure you can find what you are looking for.

    The first thing you'll notice on the homepage is that there is a drop down navigation that show the subcategories under ACCESSORIES.  Calibration Kits, Replacement Parts, Alarm/Alert, Datalogging, and Monitor Add-ons are the new options.  If you aren't sure what category the product that you are looking for would fall under you can click on the view all accessories.

    New navigation to show accessories on Gas Sensing's website

    If you click on any of the other categories you will come to page that lists all of the products in that category out. (The example below is the Replacement Parts)

    Gas Sensings Replacement Parts webpage Gas Sensings Replacement Parts webpage

    You can use the navigation on the left hand side if you know the model number of the unit that you are looking for replacement pieces for. When you click on the model, it will filter down the results even more (see image below).

    This shows the replacement parts filtered down to only showing the parts that would fit an S-200 This shows the replacement parts filtered down to only showing the parts that would fit an S-200

    Can't find a part you are looking for? It's possible we haven't gotten it on the website yet. Please contact us and we will get you a quote!!

  • Peracetic acid (PAA) Health Risks & Guidlines

    Peracetic Acid is used as a cleaner and can be found in many food establishments, medical facilities, agricultural applications, on food processing equipment,  and in pasteurizers in wineries, breweries and beverages facilities. As with all gases, proper application guidelines should be followed and gas levels should be monitored to avoid human safety issues.

    You can find all of the equipment that we offer for measuring and detecting PAA on our website.

    The article below is posted with permission by: http://www.chemdaq.com/blog/

    Peracetic Acid Uses, Health Risks & Workplace Guidelines

    Peracetic or peroxyacetic acid (PAA) is a strong oxidizing agent used for high level disinfection and sterilization at low temperatures. It is water soluble, and leaves no solid residue after rinsing and the end products are only water, oxygen and acetic acid (vinegar), making PAA a very environmentally friendly compound.

    In healthcare, the demand for faster turnaround time of heat sensitive reprocessed multiple-use medical devices led to the development of PAA liquid sterilization, given ethylene oxide’s longer required aeration time at the end of the sterilization cycle to vent the gas. In addition, the food packaging and waste water treatment industries have adopted PAA as a preferred disinfectant and sterilant wash because of its environmental properties.

    Health Risks of PAA Exposure

    As an antimicrobial agent, PAA is broadly effective against a wide range of microorganisms; it disrupts bonds in proteins and enzymes and interferes with cell membrane transportation through the rupture of cell walls, oxidizing essential enzymes and impairing vital biochemical pathways.

    The properties of PAA that make it an efficient sterilant and environmentally friendly make it potentially dangerous to any employees exposed to it in the workplace. Unfortunately the health risks to workers from PAA exposure are not known by many employers. Hospitals, food handling and processing industries commonly use PAA, in concentrations that can be harmful to workers if they are exposed.

    Specifically, the National Institute for Occupational Safety and Health (NIOSH) Registry of Toxic Effects of Chemical Substances identifies PAA as a primary irritant, known tumorigen and mutagen.

    The New Jersey Department of Health and Senior Services Occupational Health Service released a study on the the health effects of PAA exposure. The study also found that PAA is very irritating to the skin, eyes, nose, throat, and lungs, with the potential for causing permanent scarring of the skin, cornea, and throat. Higher exposures in the short term can also cause pulmonary edema as well as liver and kidney effects.
    PAA Workplace Guidelines

    While there are no Occupational Saftey and Health Administration (OSHA )regulations specifically for PAA - most OSHA PELS have not been updated since their initial adoption in 1972 - the Environmental Protection Agency (EPA) has issued Acute Exposure Guideline Levels (AEGLs) for PAA, specifically:

    AEGL-3 (death/permanent incapacity) 1.3 ppm: the threshold above which mortality and/or irreversible effects could be observed for an exposure of up to 60 minutes. AEGL-3 is analogous to the NIOSH Immediately Dangerous to Life or Health (IDLH) chemical listing concentrations and documentation values, which are 75 ppm for hydrogen peroxide and 800 ppm for ethylene oxide.
    AEGL-2 (disability) 0.51 ppm: the threshold level above which intense lacrimation, extreme nose discomfort and transient incapacitation (inability of self protection but without residual consequences) could be observed for an exposure of up to 60 minutes.

    AEGL-1 (discomfort) 0.17 ppm: the level above which discomfort could be observed for an exposure of up to 8 hours per day. AEGL is analogous to the OSHA PEL (1 ppm for both hydrogen and ethylene oxide, calculated as an 8 hour time weighted average. See OSHA Standard 1910.1000, Table Z1 Limits for Hydrogen Air Contaminants and OSHA Standard 1910.1047 for Ethylene Air Contaminants.

    View the full article HERE.

    To view our list of Peracitic Acid detection devices, visit our website.

  • PortaSens Private Label Information

    [vc_row][vc_column][vc_column_text]The C16 PortaSens Gas Detector is one of our popular portable handheld gas detectors that is manufactured by ATI.  Because of its simple swap sensors, it can be used to detect a variety of gases and is a great leak detection device for personnel safety, spot check, and is even capable of datalogging.

    C16 Sensor in Hand

    We have had customers call saying, “I need replacement sensor or parts and the unit that I have looks just like your C16, but it says Cool Air or Honeywell, where do I get those parts?”  The parts for the Cool Air and Honeywell unit are all interchangeable with the ATI parts that Gas-Sensing sells. So you need a replacement Ammonia sensor for your Honeywell EC-P2 unit that has been retired/discontinued? No problem, you can purchase the ATI equivalent (part number 00-1010) and it will work with your Honeywell device.

    The C16 branded 3 different ways 3 different brands of the PortaSens II

    We have created table below that easily compares the units and the replacement sensors that can be purchased from Gas-Sensing.

    Gas Gas-Sensing/ATI Sensors Part Number Cool Air Part Number Honeywell (Manning)
    Alcohol 00-1043   EC-P2 Alcohol 0-500 ppm
    Ammonia (NH3) 0-500 ppm 00-1010 LBW-HHS-1 EC-P2 Ammonia 0-500 ppm
    Ammonia (NH3) 0-2000 ppm 00-1011 LBW-HHS-2 EC-P2 Ammonia 0-2000 ppm
    Bromine (Br2) 00-1000   EC-P2 Bromine 0-5 ppm
    Carbon Monoxide (CO) 00-1012   EC-P2 Carbon Monoxide 0-1000 ppm
    Chlorine (Cl2) 0-5 ppm 00-1002 LBW-HHS-6 EC-P2 Chlorine 0-5 ppm
    Chlorine (Cl2) 0-200 ppm 00-1003 LBW-HHS-6 EC-P2 Chlorine 0-200 ppm
    Chlorine Dioxide (ClO2) 00-1004 or 00-1005 or 00-1359 or 00-1425 LBW-HHS-7  
    Ethylene Oxide (EtO) 00-1039 LBW-HHS-9 or LBW-HHS-10  
    Fluorine (F2) 00-1007 or 00-1006 LBW-HHS-3 EC-P2 Fluorine 0-5 ppm
    Formaldehyde (CH2O) 00-1040   EC-P2 Formaldehyde 0-5 ppm
    Hydrogen 00-1041   EC-P2 Hydrogen 0-2000 ppm
    Hydrogen Chloride (HCl) 00-1017   EC-P2 Hydrogen Chloride 0-200 ppm
    Hydrogen Cyanide (HCN) 00-1018 LBW-HHS-5  
    Hydrogen Peroxide (H2O2) 00-1042   EC-P2 Hydrogen Peroxide 0-200 ppm
    Hydrogen Sulfide (H2S) 00-1020 or 00-1469 LBW-HHS-4 EC-P2 Hydrogen Sulfide 0-200 ppm
    Nitric Oxide (NO) 00-1021   EC-P2 Nitric Oxide 0-500 ppm
    Nitrogen Dioxide (NO2) 00-1022 LBW-HHS-8 EC-P2 Nitrogen Dioxide 0-200 ppm
    Oxygen (O2) 00-1014   EC-P2 Oxygen 0-25%
    Ozone (O3) 00-1008   EC-P2 Ozone 0-5 ppm
    Sulfur Dioxide (SO2) 00-1023   EC-P2 Sulfur Dioxide 0-500 ppm


    Need other replacement parts for your Honeywell or Cool Air unit? They can be found on our website here: http://www.gas-sensing.com/accessories.html?montior_type=597

    Want to monitor another type of gas? There are many options that are compatible with the device that you have.  You can view them all on our website here : http://www.gas-sensing.com/replacement-sensors.html?manufacturer=1&monitor=402[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_basic_grid post_type="post" max_items="22" element_width="3" grid_id="vc_gid:1473954084555-08f179f4-0d99-10"][/vc_column][/vc_row][vc_row][vc_column][vc_basic_grid post_type="post" grid_id="vc_gid:1473956997079-b95ac5e2-55b8-7"][/vc_column][/vc_row]

  • Calibration Services

    Sensor Calibration

    Why must you calibrate gas sensors?  Calibration is recommended to ensure maximum accuracy and safety.  It verifies the sensor is accurate and providing correct measurement of the gas you are detecting.

    How often should I calibrate my sensor? Factory calibration should be done annually. But we also recommend field check or bump test every 6 months.  Different gasses and sensor manufacturers have different requirements.  You can view their specific requirements using the links below:

    ATI Sensor Calibration Information - http://www.gas-sensing.com/ati-calibration

    Aeroqual Sensor Head Calibration Information - http://www.gas-sensing.com/aeroqual-calibration

    EcoSensors Calibration Information - http://www.gas-sensing.com/ecosensors-calibration

    Factory Calibration

    Your sensor can be sent back to us for calibration.  We will evaluate, calibrate, and return it with a Calibration Certificate providing performance during calibration, date it was calibrated, and date that calibration should be done next.

    How do I return my sensor to be calibrated?

    Your sensor can be sent back to us at:
    Attn: Calibration
    1322 1st Street
    Hull, IA 51239

    We require that an RMA form be filled out and sent back with your sensor. Contact us to receive this form.

    Calibration Gasses

    Another option is to get gas cylinders of known quantities of gas.  This can be mixed with air to provide span calibration.  This needs to be done according the manufacturers specifications to perform a span gas calibration.   NOTE: This is not an option for all gases as some have a short half-life and cannot be bottled.

    Some gases can be calibrated on site using a calibration kit. For example: the A23-14 provides a consistent flow of calibrated ozone gas for calibration purpose, in a handy portable carry case.

    Gas Calibration Kits can be found on our website.

    Field Calibration

    Field calibration can be performed on-site and is convenient when sending your sensor in to be calibrated is challenging.  In order to perform field calibration you must have calibration gasses or a unit designed to produce a consistent amount of gas, that way you can ensure the sensor is reacting properly.

    Gas Sensing is will to come to your facility and perform Field Calibration.

    Bump Testing

    Bump testing allow you to check and make sure that your sensor is responding to the gas that you are trying to detect.  It is not a precise measurement, but rather, just a check to ensure your monitor is reacting and will respond when gas levels reach a dangerous level. This is not a replacement for calibration.

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