Contaminated Ventilator Air Flow Sensor Linked to Bacillus cereus Colonization of Newborns

The Missouri Department of Health and Senior Services conducted this investigation in response to the hospital's identification of an increased number of tracheal aspirates that were positive for B. cereus collected from newborns who were on ventilators during March–May, 2011. All tracheal aspirate culture results obtained in the Neonatal Intensive Care Unit (NICU) during January 2010–June 2011 were reviewed. NICU data was also searched for positive B. cereus culture from other specimens, such as blood, body fluids, or tissues. Investigators thoroughly evaluated respiratory management practices in the unit by direct observation, respiratory records review, and an interview with the respiratory therapist.
Several environmental cultures were obtained from the flow sensors of the unit's ventilators over the 1-month period. B. cereus isolates were forwarded to the Centers for Disease Control and Prevention to be molecularly characterized by using multilocus sequence typing (MLST). DNA was prepared from bacterial cultures as described. The DNA was used as a template in PCRs with the primers described on the Bacillus cereus MLST Web site for the 7 loci which define the MLST scheme. The sequences for the loci glpF, gmk, ilvD, pta, pur, pycA, and tpi were then assigned allele designations. The combination of the 7 alleles determines a given sequence type. A greater number of alleles that match between strains indicates a higher level of relatedness. Prevalence of B. cereus–positive specimens was compared by using the Mann-Whitney U test.
Retrospective analysis of tracheal aspirate culture results showed significant increase (p = 0.039) in B. cereus isolation between March and May, 2011. No Bacillus spp. were isolated from blood, other body fluids, or tissues during the study period. The chart review of the case-patients comprising the cluster of B. cereus colonization revealed that none received a diagnosis of clinical B. cereus infection. All patients were treated with vancomycin or tobramycin, or both, for indications not related to B. cereus in tracheal aspirate. One case-patient died 108 days later without evidence that B. cereus contributed to the outcome. All other case-patients recovered and were discharged.

Investigation of the ventilation procedures in the NICU revealed that most equipment used for respiratory care was disposable, designated for single-patient use. The Draeger Evita v500 ventilator was used for mechanical ventilation of infants who were intubated to treat severe respiratory compromise. The Draeger Evita V500 is a microprocessor controlled ventilator offering both mandatory and spontaneous ventilation modes for adult, pediatric, and neonatal patients. Heated and humidified gas flows from the ventilator unit, through the inspiratory circuit and NeoFlow air flow sensor to the patient through an endotracheal tube. Upon exhalation, gas flows back through the air flow sensor into the expiratory circuit and returns to the ventilator through the expiratory flow sensor and exhalation valve. In addition to the ventilator, reusable respiratory equipment comprised a proximal air flow sensor, expiratory flow sensor, exhalation valve, and circuit temperature probe. The sensor closest to the newborn's mouth was an air flow sensor located inside the disposable ventilation circuit. From 9 environmental cultures obtained from 9 air flow sensors, 1 was positive for Bacillus spp., and was later confirmed as B. cereus by the State Public Health Laboratory.

MLST was performed for 8 B. cereus isolates from case-patients and for 1 environmental isolate from the air flow sensor. We were able to fully characterize 4 of the 9 isolates. One locus for the remaining 5 strains did not yield an amplicon for sequencing after repeated attempts and, thus, could not be assigned a sequence type. The isolates that included sequence type (ST) 73 and ST94 were closely related to each other because they differed by merely 1 locus, gmk. The strains that were not fully typed because of the inability to obtain sequences for locus pta were also closely related to ST73 or ST94 because the other loci matched. There was 1 match between strains isolated from 1 case-patient and the air flow sensor, which was ST73. The contaminated air flow sensor was then sterilized by using a steam autoclave. A repeat culture of this sensor after sterilization was negative.
We found that air flow sensors were routinely disinfected by placing them in a container with 70% alcohol solution for 60 minutes. After discovery of the air flow sensor contaminated with B. cereus, the disinfection policy was changed. All air flow sensors were first soaked in Enzol enzymatic detergent solution and then sent for steam autoclave sterilization at 134°C (273.2°F). After implementation of new disinfection and sterilization procedures, no new cases of B. cereus tracheal colonization were identified in the nursery. In this cluster, contaminated proximal air flow sensors were the likely source of tracheal colonization with B. cereus in newborn infants, supported by a genetic match by MLST between a strain isolated from 1 case-patient and the contaminated air flow sensor.

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An air flow sensor for neonatal mechanical ventilation applications based on a novel fiber-optic sensing technique

In this work, a simple and low-cost air flow sensor, based on a novel fiber-optic sensing technique has been developed for monitoring air flows rates supplied by a neonatal ventilator to support infants in intensive care units.

The device is based on a fiber optic sensing technique allowing (a) the immunity to light intensity variations independent by measurand and (b) the reduction of typical shortcomings affecting all biomedical fields (electromagnetic interference and patient electrical safety). The sensing principle is based on the measurement of transversal displacement of an emitting fiber-optic cantilever due to action of air flow acting on it; the fiber tip displacement is measured by means of a photodiode linear array, placed in front of the entrance face of the emitting optical fiber in order to detect its light intensity profile.

As the measurement system is based on a detection of the illumination pattern, and not on an intensity modulation technique, it results less sensitive to light intensity fluctuation independent by measurand than intensity-based sensors. The considered technique is here adopted in order to develop two different configurations for an air flow sensor suitable for the measurement of air flow rates typically occurring during mechanical ventilation of newborns: a mono-directional and a bi-directional transducer have been proposed.

A mathematical model for the air flow sensor is here proposed and a static calibration of two different arrangements has been performed: a measurement range up to 3.00 × 10(-4) m(3)∕s (18.0 l∕min) for the mono-directional sensor and a measurement range of ±3.00 × 10(-4) m(3)∕s (±18.0 l∕min) for the bi-directional sensor are experimentally evaluated, according to the air flow rates normally encountered during tidal breathing of infants with a mass lower than 10 kg.

Experimental data of static calibration result in accordance with the proposed theoretical model: for the mono-directional configuration, the coefficient of determination r(2) is equal to 0.997; for the bi-directional configuration, the coefficient of determination r(2) is equal to 0.990 for positive flows (inspiration) and 0.988 for negative flows (expiration). Measurement uncertainty δQ of air flow rate has been evaluated by means of the propagation of distributions and the percentage error in the arrangement of bi-directional sensor ranges from a minimum of about 0.5% at -18.0 l∕min to a maximum of about 9% at -12.0 l∕min.

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A novel air flow sensor from printed PEDOT micro-hairs

We report the creation of a low flow rate air flow sensor from PEDOT micro-hairs. The hairs are printed as pipette-defined depositions using a nanopositioning system. The printing technique was developed for fabricating structures in 2D and 3D.

Here micro-hairs with diameters of 4.4 μm were repeatedly extruded with constant heights. These hairs were then applied to produce a prototype flow rate sensor, which was shown to detect flows of 3.5 l min⁻¹.

Structural analysis was performed to demonstrate that the design can be modified to potentially observe flows as low as 0.5 l min⁻¹. The results are extended to propose a practical digital flow rate sensor.

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Air Flow Sensor Provides Protection for Magtrol's Hysteresis Dynamometers

The addition of an air flow sensor to Magtrol's Hysteresis Dynamometers provides protection against costly operator error. When using a dynamometer that requires cooling there are additional steps that need to be taken when running a test.

The sensor, when used in combination with Magtrol's DSP6001 Dynamometer Controller, reminds the user of these steps by not allowing the dynamometer brake to be energized until the blower or air supply has been turned on. The air flow sensors can be retrofitted to Magtrol's ED-715 and 815, HD-510, 710, 715 and any HD-800 Series dynamometers. Magtrol's Hysteresis Brake Dynamometers are versatile and ideal for testing in low to medium power ranges (max. 14kW intermittent duty).

With a hysteresis braking system, the dynamometers do not require speed to create torque, and therefore can provide a full motor ramp from free-run to locked rotor. Brake cooling is provided by convection (no external source), compressed air or dedicated blower, depending on the model. Other features of the HD dynamometer include ±0.25% to ±.5% full-scale accuracy ratings; high repeatability; ease of operation; standard English, metric and SI torque measurement options; easy calibration and an optional encoder switch. Magtrol, Inc. is a leading manufacturer in the Motor Testing Industry providing high quality products to measure and control torque-speed-power, load-force-weight, tension and displacement.

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An air flow sensor for neonatal mechanical ventilation applications based on a novel fiber-optic sensing technique

In this work, a simple and low-cost air flow sensor, based on a novel fiber-optic sensing technique has been developed for monitoring air flows rates supplied by a neonatal ventilator to support infants in intensive care units.

The device is based on a fiber optic sensing technique allowing (a) the immunity to light intensity variations independent by measurand and (b) the reduction of typical shortcomings affecting all biomedical fields (electromagnetic interference and patient electrical safety). The sensing principle is based on the measurement of transversal displacement of an emitting fiber-optic cantilever due to action of air flow acting on it; the fiber tip displacement is measured by means of a photodiode linear array, placed in front of the entrance face of the emitting optical fiber in order to detect its light intensity profile.

As the measurement system is based on a detection of the illumination pattern, and not on an intensity modulation technique, it results less sensitive to light intensity fluctuation independent by measurand than intensity-based sensors. The considered technique is here adopted in order to develop two different configurations for an air flow sensor suitable for the measurement of air flow rates typically occurring during mechanical ventilation of newborns: a mono-directional and a bi-directional transducer have been proposed.

A mathematical model for the air flow sensor is here proposed and a static calibration of two different arrangements has been performed: a measurement range up to 3.00 × 10(-4) m(3)∕s (18.0 l∕min) for the mono-directional sensor and a measurement range of ±3.00 × 10(-4) m(3)∕s (±18.0 l∕min) for the bi-directional sensor are experimentally evaluated, according to the air flow rates normally encountered during tidal breathing of infants with a mass lower than 10 kg.

Experimental data of static calibration result in accordance with the proposed theoretical model: for the mono-directional configuration, the coefficient of determination r(2) is equal to 0.997; for the bi-directional configuration, the coefficient of determination r(2) is equal to 0.990 for positive flows (inspiration) and 0.988 for negative flows (expiration). Measurement uncertainty δQ of air flow rate has been evaluated by means of the propagation of distributions and the percentage error in the arrangement of bi-directional sensor ranges from a minimum of about 0.5% at -18.0 l∕min to a maximum of about 9% at -12.0 l∕min.

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Reverse engineering capabilities to extend life of C-5 airflow sensor

While its weight is only a few ounces, the job of a C-5 Galaxy airflow sensor is critical in keeping the huge aircraft safely flying.

When parts are no longer available to replace items such as this, the 402nd Electronics Maintenance Group's Reverse Engineering team has the repair capabilities to help solve parts obsolescence challenges in order to sustain crucial items for years to come.

The team of electronics and mechanical engineers, technical writers, draftsmen, project managers and engineering technicians repair the irreparable, performing consulting work at other Air Force bases as needed.

Karl Zack, a 402nd EMXG electrical engineer, is working on a cooling effects detector redesign project, ensuring that the newer version has the same shape, size and function as the original.

"It's a real treat to be working on something that's a complete redesign," he said. "In this case, we wanted to make the sensor a little more robust."

The airflow sensor is basically a warning sensor for over-temperature or under-airflow. The greater the airflow, the better. The lower the temperature, the better.

The sensor sits within an assembly in an air duct. If it gets too hot inside an air duct as a result of avionics overheating, an alarm is triggered as indicated on a flight engineer's panel. The sensor detects a temperature from 170 degrees to 220 degrees Fahrenheit.

Until it detects heat that's too high or too low, it will stay out of alarm, said Zack.

In the case of this particular redesign, a mechanical switch located inside the sensor had been subject to failure, and was one of the main components that had been breaking.

"Our design will have no motion involved, thereby eliminating the mechanical aspect of it," he said.

In the world of aviation electronics, the cavernous warehouse known as Bldg. 645 is filled with some of the latest and most exciting technologies. When avionics need to be upgraded, the work is performed here.

With reverse engineering, typically its main function is to stand up test sets here, developing more of a test engineering environment, said Zack.

Their role is unique, creating organic repair capabilities that didn't previously exist. When you change something on a part, for example, there can be various testing involved.

"We have to really go back to way the original asset was qualified, and replicate those tests that were performed on it if we've changed something in it," he said. "With the cooling effects detector, that requires a full re-certification because everything is new."

The project is scheduled to be completed in March 2015.

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K&N Mass Air Flow Sensor Statement

Every stock replacement air filter we sell comes with this sticker, which we advise consumers to place prominently on their air box. The sticker is to alert service technicians that they should not throw away your K&N air filter because it will last for the life of your vehicle. When service technicians see this sticker it means "STOP SELLING THIS CUSTOMER DISPOSABLE AIR FILTERS OVER AND OVER."

In our opinion, this is why some dealerships or service providers may attempt to discourage a consumer from using a K&N air filter or worse blame a vehicle repair on our lifetime air filter. Most dealerships provide excellent service and fulfill car warranty obligations without issue, argument or tardiness. The rest of this discussion is about a minority of dealerships who are either misguided or misinformed.

We are aware of the "urban myth" (K&N News Story) created by a few dealerships that a vehicle's Mass air flow sensor can be contaminated by K&N filter oil. No evidence has ever been provided to support this "myth" and years of diagnostic testing by K&N has shown that not only is this allegation not real, it is not even possible. In our opinion, it is an excuse for a dealership and/or the vehicle manufacturer to avoid a legitimate warranty repair.

In the last 4 years, we have sold over 10,000,000 lifetime air filters and received only a few hundred calls from consumers who are having dealership or service provider challenges. We believe that Dealership's or service provider's real incentive may be to discourage the use of reusable products so they can sell disposable products over and over. In order to provide consumers with added comfort that they will not be placed in a bad position by an improper warranty denial, we offer our Consumer Protection Pledge.

Mass Air Flow Sensor Investigations

No dealership or service provider, when contacted, has ever been able to provide us with evidence to support this "myth," and in fact, our investigations have revealed that even authorized dealerships are simply speculating and do not have the test equipment necessary to know whether the sensor has failed or why.

In the last 7 years, we have had more than 300 actual sensors sent to us by consumers with documents showing dealerships claimed our product had caused them to fail. Microscopic, electronic and chemical testing revealed that none of these sensors were contaminated by K&N oil (K&N Detailed Mass air flow Sensor Test Results). What is perhaps the single biggest clue to what is going on is that over 50% of these sensors sent to us were not broken in the first place for any reason. Click here for more information on how this may happen.

The oil treatment on our cotton is very small (usually less than 2 ounces) and is a critical component of our filtration technology. There is nothing unusual about the use of oil as a tacking agent to improve air filter efficiency. In fact, certain Ford Motorcraft and Fram disposable air filters are treated with oil. This makes us wonder if it is only the oil treatment from reusable lifetime air filters that is alleged cause a vehicle problem?

The idea that oil comes off our filter throughout its life is truly ridiculous. Just like oil treated disposable air filters, once our oil is properly and evenly absorbed through the cotton, no oil will come off, even under extreme engine conditions. We have even conducted a test with an over oiled K&N air filter in which we flowed 1,000 cubic feet of air per minute for over twelve hours (few cars or truck could generate even 500 cubic feet of air flow). The use of an absolute filter confirmed that no oil came off the K&N filter tested, even in these harsh conditions.

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New at Summit Racing Equipment: JET Powr-Flo Mass Air Flow Sensor for GM Vehicles

Summit Racing now carries JET's Powr-Flo Mass Air Flow Sensor for GM vehicles. By swapping the factory Mass Air Flow sensor for the Powr-Flo MAF Sensor, owners can bump up horsepower, torque, and fuel economy.

The Powr-Flo MAF sensor optimizes airflow better than the factory sensor. This allows the engine’s ECU to create a more performance-oriented air/fuel ratio. That means better combustion, which delivers better throttle response, more torque and horsepower, and improved fuel economy. The improved airflow a Powr-Flo sensor creates is perfect for optimizing the performance of other modifications like ECU tuning, a cold air intake, or a performance exhaust system.

The JET Powr-Flo sensor is fully compatible with factory electronics systems and, in most cases, installation requires little more than unbolting the OE sensor and replacing it with the Powr-Flo. It’s even approved for use in California under CARB E.O. Number D-234-11.

The JET Powr-Flo Mass Air Flow Sensor will fit many popular 2012-16 Chevy, Buick, Cadillac, and GMC cars and light trucks with four-, six-, and eight-cylinder engines.

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Air Flow Sensor Shortage Impacts Auto Manufacturers

The IAC team has of course been watching the situation in Japan and one early prediction we made in a recent Level Measurement web-cast is that there would be some shortages of sensor modules. It has been surprising that the impact is as small as it is up to this point. This has been a testament to good supply line management practices of keeping some buffer in the pipeline and using multiple sources.

As of this week, we are seeing that one particularly specific automotive sensor has become critically short in supply. This is causing many auto manufacturers to slow down or halt production. The sensor in question is a Mass Air Flow sensor module made by Hitachi. This is a fairly precision device that measures the characteristics of the incoming air supplied to the engine. The engine's computer then uses data from this sensor to precisely control the fuel/air mixture for maximum economy and minimum pollution. From what we see, the problem is actually a shortage of a particular semiconductor at the heart of the assembly. Hitachi has approximately 60% of this sensor module market and, key parts were made/tested in at a plant strongly affected by by the earthquake and subsequent losses of electricity.

I have significant experience in the semiconductor Automatic Test Equipment (ATE) industry so I am going to speculate a little about why we are seeing problems for this type of part. A vast majority of semiconductors are now produced and tested at companies that specialize in semiconductor fabrication and/or testing. Therefore having redundant regionally diverse supply channels is fairly easy. In the case of a few types of semiconductors like accelerometer type (MEMS) chips used in airbag and other automotive applications and the aforementioned air flow chip, specialized testing is needed. In other words, you have to apply carefully controlled stimuli while testing/calibrating the chip. In the case of the MEMS chip, a g-force. In the case of the air flow sensor, air mixtures of differing force and temperature. Once you set up a test cell for this type of work, it's pretty specialized and not really flexible to test anything else. Therefore, there is little economic incentive for a wafer fab/test house to do this kind of work unless you are going to pay them for maximum utilization.

One last point before we move on. You ideally want to do most of the testing at the wafer level or at least the packaged device. You never want to be finding bad devices at the finished air flow sensor module product level.

In conclusion, VDC estimates that as a result of this event, in order to preserve its market lead, Hitachi will likely have to address the single source problem by diversifying its production test and final assembly sites and/or adding inventory buffer.

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New SUNX Digital Air Flow Sensor with an Integrated Dual Color Display to Improve Productivity

New Providence, NJ - Panasonic Electric Works Corporation of America today announced the release of new digital air flow sensor, the FM-200 series under SUNX brand, which offers users greater usability and high performance. The FM-200 series is a bi-directional digital flow sensor for use with air or Nitrogen gas. It offers high precision detection of 3% F.S and high speed response in an ultra small package, thanks to the utilizing of MEMS (Micro Electro Mechanical System) technology.

The series covers a wide range of flow rates and has a wide range of I/O options standard, such as dual discrete outputs, an analog voltage output, and an external input. Dual Digital Display: The integrated two-color dual digital display offers quick and easy verification of the sensor's operation, including flow rate, direction, and output condition. Bi-Directional Flow Detection: The unique sensor chip of the FM-200 allows for flow sensing in both directions. The unit utilizes two temperature sensors, one on each side of a heater element, to determine the heat distribution.

This concept provides accurate detection, regardless of flow direction. Flow Rate and Flow Meter Modes: The FM-200 series not only has the ability of displaying the real time flow rate of a process, but also has a mode that will allow the unit to function as a flow meter. This is great for applications where the customer would like monitor the amount of air used or lost in their process. Comprehensive Lineup: The FM-200 series is available in three port sizes with a total of eight flow rate ranges, from 0.5l/min. through max.1000 l/min. The models of the FM-200 series also boast one of the smallest package sizes in its class, with the largest model (1000 l/min) being only W30 x H50 x D80mm in size. The FM-200 is suitable for applications to control purge gas and air used on production lines, or to check seating of transparent objects or suction of objects on collection conveyors with low suction pressures.

The SUNX FM-200 series is immediately available from stock. Please contact Panasonic Electric Works Corp. of America and their authorized distributors. About Panasonic Electric Works Corporation of America Panasonic Electric Works Corporation of America is a US subsidiary of Matsushita Electric Works, Ltd, an $11 billion company and major developer, manufacturer and provider of electrical construction, materials, home appliances, residential building materials, automation control products, wiring devices and electronic materials. SUNX is the brand of industrial sensors from SUNX, Ltd, a major affiliated company of Matsushita Electric Works. SUNX brand products are sold through the sales network of Automation Control Systems Division of Panasonic Electric Works for Americas since 2001.

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Series PAFS-1000 averaging airflow sensors from Dwyer Instruments for use in HVAC systems

Dwyer Instruments now offers series PAFS-1000 averaging airflow sensors for sensing differential pressure in the inlet section of variable air volume terminal units and fan terminal units, or to sense differential pressure at other locations in the main or branch duct systems.

The "H" port on these airflow sensors senses total pressure and the "L" port senses static pressure. The difference between these signals is the differential, or velocity pressure.

Models PAFS-1002 to PAFS-1005 of these sensors can be supplied with up to four sensing points and lengths of 3-5/32" to 9-29/32" (8.02 to 25.26 cm), to accommodate box size diameters of 4" to 16" (10.16 to 40.64 cm) are available.

For models PAFS-1006 to PAFS -1011, up to 10 sensing points and lengths from 12-1/2" to 23-29/32" (31.75 to 60.72 cm) are available to accommodate appropriately sized duct dimensions.

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Research Report Explore the Air Flow Sensors Industry

 The Global Air Flow Sensors Industry 2016 Market Research Report is a professional and in-depth study on the current state of the Air Flow Sensors industry.
Firstly, the report provides a basic overview of the industry including definitions, classifications, applications and industry chain structure. The Air Flow Sensors market analysis is provided for the international market including development history, competitive landscape analysis, and major regions’ development status.
Secondly, development policies and plans are discussed as well as manufacturing processes and cost structures. This report also states import/export, supply and consumption figures as well as cost, price, revenue and gross margin by regions (United States, EU, China and Japan), and other regions can be added.
Then, the report focuses on global major leading industry players with information such as company profiles, product picture and specification, capacity, production, price, cost, revenue and contact information. Upstream raw materials, equipment and downstream consumers analysis is also carried out. What’s more, the Air Flow Sensors industry development trends and marketing channels are analyzed.
Finally, the feasibility of new investment projects is assessed, and overall research conclusions are offered.


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Delphi mass air flow sensors

Delphi Product & Service Solutions has seven new mass air flow sensors covering more than 1.1 million vehicles including Volkswagen, Honda and Mercedes-Benz applications built from 1993 to 2011.

The part numbers are: AF10310, AF10316, AF10334, AF10338, AF10341 and AF10343.

Delphi says there are four reasons to choose the mass air flow sensor line:
1. OE engineered: Every sensor Delphi sells is calibrated to match the OE part and features resistors and circuit board technology unique to Delphi.

2. Over 30 years of expertise: Thanks to years of experience, Delphi can offer smart consolidations that cover 92% of vehicles in operation with only 100 SKUs.

3. Exact calibration: Delphi MAF sensors feature proprietary sensing elements that provide highly accurate readings and airflow output to the ECU over a wide range of ambient temperatures.

4. Innovative design: Delphi’s sensors are design to provide low restriction air measurement for increased horsepower and greater temperature compensation for outstanding performance over a wide range of conditions.

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High accuracy air flow sensor for industrial applications

The EE75 air velocity transmitters (air flow sensors) are optimized for high accuracy up to 40 m/s (8000 ft/min) over the temperature range -40...120 °C (-40...248 °F).

ISweek - Industry sourcinghe robust sensing probe and enclosure allow for EE75 use in harsh industrial environment as well as in applications with pressure rating up to 10 bar (145 psi).

Beside measuring air velocity and temperature, EE75 calculates the volumetric flow rate in m³/h or ft³/min based on the cross section of the duct, with an appropriate factory correction. The EE75 can be used to measure the velocity of various non-flammable and non-corrosive gases.

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The Smallest Differential Pressure/Air Flow Sensor on the Market

Sensirion has launched the SDP3x, which is the world's smallest differential pressure sensor. It offers superior precision and repeatability, even below 1 Pa. It also provides long-term stability.

The SDP3x air flow sensor is reflow solderable, and provides prolonged functionality, such as smart averaging, interrupts and rapid sampling time of 2 kHz at 16 bit resolution. The novel sensor is an ideal choice for high volume and cost-sensitive applications where size is vital factor.

Key Features
The main features of the SDP3x sensor are listed below:
• Smallest size measuring just 5 x 5 x 8mm, which facilitates new dimension of applications
• Calibrated and temperature compensated
• Measurement range ±500 Pa (±2 in. H2O)
• Digital I2C and analog output versions
• There is no drift and no zero-offset
• Rapid sampling time of 2 kHz at 16 bit resolution
• Reflow solderable, shipped in "tape and reel" for "pick and place"

Applications
The SDP3x can be applied in the following areas:
• Heating, ventilation, air conditioning (HVAC)
• Medical home care applications
• Lifestyle and consumer products
• Portable medical devices
• Filter monitoring
• Appliances

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Delphi adds mass airflow sensors

Delphi Product & Service Solutions has added six mass airflow sensors (MAF) covering more than 338,000 vehicles built from 1994 to 2004 to its product portfolio

The company says part numbers include AF10077, AF10196, AF10225, AF10229, AF10236 and AF10237.

Unlike offerings from many competitors, its MAF sensors are brand-new, never remanufactured, according to Delphi. The sensors are engineered to the same stringent standards as the parts it makes for top global OEMs. Every sensor is calibrated to match the OE part and features resistors and circuit board technology unique to Delphi. The company says this combination makes its MAF sensors the global benchmark for accuracy and signal noise.

Delphi says it has been at the forefront of the MAF sensor evolution from the original hot film designs to its current probe solution. It offer smart consolidations that cover 92% of vehicles in operation with only 100 SKUs.

The company also says its MAF sensors feature proprietary sensing elements that provide highly accurate readings and airflow output to the ECU over a wide range of ambient temperatures. All parts are tested and calibrated to OE standards using highly accurate OE equipment.

Ninety-eight percent of the time it is the sensing electronics in the probe that fail, according to the company. Delphi’s probe-only design allows technicians to focus on the part that needs to be replaced, making for an easier and greener repair.

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