Tag Archives: Water Measurement

Take Charge of Your Facility’s Water Usage…

Water is a precious resource! Now, more than ever, businesses and facilities must take charge of their water usage to help with water conservation and lower water bills. Water conservation begins with knowing exactly how much water you are using in your process or facility. When you know how much water you are using, you can adjust your usage to both aid water conservation and lower your water bills.

There are many types of liquid flow meters on the market that use a variety of technologies for accurate measurement.  In general industry, for very accurate closed pipe water measurement magnetic flow meters, vortex flow meters, and ultrasonic flow meters are very common.

Since the introduction of ultrasonic transit-time flow meters, manufacturers have continually improved their measurement and signal processing capabilities. Recent advances in digital correlation transit-time technology allow customers to use this convenient, non-intrusive installation to address some of the more challenging flow applications.

Ultrasonic flow meters are divided into two measurement technologies: Doppler & transit-time. These technologies are available in two styles: 1) clamp-on (non-intrusive to the piping system) or 2) wetted (inserted into the pipe with the sensors exposed to the flowing fluid). Traditionally, magnetic flow meters have been used in water and waste water applications. If ultrasonic flow meters were used at all, they were typically based on Doppler technology. However, with advances in signal processing and more powerful transducers, transit-time technology has far surpassed earlier predecessors in measuring these commonly “dirty” flows.
Transit-time Ultrasonic Flow transit.time.imageMeters Explained

In a transit-time ultrasonic flow meter, an ultrasonic signal is transmitted in the direction of the flowing fluid (downstream), and then another signal is transmitted against the flowing fluid (upstream). This is illustrated in the figure. In its most basic form, the time for the sonic pulse to travel downstream is compared to the time for the pulse to travel upstream. This differential time is then used to calculate the velocity of the flowing fluid.

Some things to consider when you’re looking for an ultrasonic flow meter that delivers precision results:

  • Portable. For fast, easy, precise measurement of a wide range of liquid flows and temperatures, clamp-on, transit-time ultrasonic portable flow meter products are ideal for most applications
    Low power consumption. Instrumentation uses minimal power to provide the flow measurement results you need.
  • High reliability. Companies like Sierra have a long history of liquid flow measurement manufacturing.
  • Competitive pricing. Transit time flow solutions don’t have to be costly to be accurate.
  • Easy-to-read display. See readings quickly to easily adjust water flow.
  • Clear menu selections. Take the guesswork out of accurate readings with user-friendly navigation.

Sierra’s InnovaSonic digital liquid flow meters deliver all of the above for highly accurate and repeatable water flow measurement. The 203, in particular, is ideal for pipes up to 48 inches and features precision readings with accuracy to +/- 1.0% of reading from 1.6 to 40 ft/s, repeatability of +/- 0.3%, and a temperature range of 32°F to 140°F.

Water is precious, so start conserving now. Order your InnovaSonic 203 online today for fast one-day delivery.

The New Vortex iSeries has Arrived!

InnovaMass. Reinvented. I am proud to announce on behalf of our entire development team, our completely re-designed, next generation InnovaMass 240i and 241i vortex volumetric flow and multivariable mass flow meter product line. Learn more…

The all new iSeries InnovaMass 240i inline and 241i insertion vortex flow meters are manufactured at our brand new assembly and calibration facility in Monterey, California. I think you will find this new product exemplifies on our tradition of innovation with improvements and features like:

  • New Raptor II OS operating system “Flow Engine”
  • 10x faster processing speed
  • It has Apps like: FloPro, qMix, Dial-A-Pipe, Dial-A-Fluid
  • Easy field setup, meter tuning and instrument validation
  • Field firmware upgrades
  • And much more

Learn more… Reduced Cost of Ownership: With five high accuracy measurements available from InnovaMass, total cost-of-ownership plummets. Lower initial cost, less complex installation, and reduced maintenance costs contributed to significant overall savings. Did You Know?  In 1997, Sierra was the first to design and introduce a multivariable mass vortex flow meter to the world with InnovaMass. Today, multivariable mass vortex units are an industry standard. InnovaMass is a Registered Trademark of Sierra Instruments, Inc., Monterey, California

It Has Apps! Our New Vortex Flow Meter Empowers You

Sierra’s next generation InnovaMass “iSeries” features a new hyper-fast microprocessor, robust software apps, and an automated state-of-the-art manufacturing and flow calibration facility to assure the highest level of quality and delivery.

It Has Apps! The InnovaMass iSeries features flow management apps driven by our new Raptor II OS that will empower your process and save you time and money.

  • ValidCal Diagnostics™ for field calibration verification and meter health checks
  • FlowPro™ vastly improves low flow measurement accuracy
  • MeterTuning™ cancels noise, improves accuracy
  • Dial-A-Pipe™ allows you to quickly change pipe sizes in the field
  • Dial-A-Fluid™ measures a variety of fluids whenever you choose
  • qMix™ makes/measures custom mixtures
  • Many more apps to come…

Watch iSeries Product Video       View iSeries Sizing Program

Tuning Your Boiler for EPA Boiler MACT Compliance


The EPA’s Boiler MACT (Maximum Achievable Control Technology) regulations are heating up. Boiler MACT is an EPA rule to limit hazardous air pollutants (HAP) from commercial and industrial boilers and process heaters. Originally published in 2011 as a mandate driven by the Clean Air Act,  the rules are Area Source Boiler MACT 40 CFR 63, subpart JJJJJJ for smaller boilers (stores, hotels, apartments, small manufacturers, etc.) and Major Source Boiler MACT, subpart DDDDD for large ones (refineries, chemical and large manufacturing plants, large facilities).

Annual boiler compliance reports, efficiency tuning, and energy assessment are all buzz words, and facilities managers need to act fast to comply with the Boiler MACT regulations. This urgency is fueled further by the upcoming Major Source Boiler MACT final compliance deadline of January 31, 2017—which ends the three-year grace period from the date the final rules were published.

Boiler Tuning Increases Efficiency
The thrust of the Boiler MACT standards requires end users to report boiler emissions, a rule which has already been adopted in most states (See Figure 1). The addition to the mandate requires end-users to “tune” new boilers when they first start up and then perform periodic tuning.

The good news is that the purpose of the “tuning” is to measure boiler efficiency. How efficient is the boiler at turning the fuel (oil, gas, coal) and water into steam? A well-tuned boiler is around 80% efficient. If the boiler’s efficiency is less than 80%, then energy is being wasted and most likely adding hazardous air pollutants to our environment. In this case,  end users are required to fix the boiler to meet this efficiency level. “Fixing it” entails  fixing leaks, adding insulation, and cleaning heat exchanger tubes, which all add to the cost of boiler maintenance. Download Boiler MACT Information Guide.

3 Ways to Tune Your Boiler for Boiler MACT Compliance
To efficiently tune a boiler, three key measurements must be taken: air and fuel inlet flow, feed water flow, and steam output (See Figure 1).


Figure 1: Typical Boiler Flow Application

The ideal instrumentation to provide these flow measurements  for tuning are thermal flow meters for gas, ultrasonic flow meters for water, and vortex flow meters for steam output. Sierra’s variety of flow meters can help you manage your energy costs downward and meet EPA Boiler MACT regulations by providing solutions for the following three key measurements. 

1. Measure Fuel Flow to Boilers
It’s critical to precisely measure the intake fuel (oil, gas, coal) to the boiler to tune and then optimize for efficiency. Sierra’s economical BoilerTrak thermal mass flow meter, specifically designed to provide precise natural gas measurement for heaters and boilers, is an ideal product to help with monthly fuel reporting and boiler tuning to increase efficiency.

For more complex gas mixtures being burned, use QuadraTherm 640i/780i thermal mass flow meters.

2. Measure Feed Water Flow to Determine Steam Efficiency
In boiler tuning, the feed water flow to the boiler is an important measurement, since you need to measure the efficiency at which the boiler turns this feed water into steam (See Figure 1). Our  InnovaMass 240i vortex volumetric flow meters are an economical solution for water measurement applications in new boilers, while the InnovaSonic 205i ultrasonic flow meter can be retrofitted easily into existing boilers due to its clamp-on nature. The 210i  portable ultrasonic flow meter is a good analysis tool as well for periodic boiler tuning where fixed measurement devices are not already installed.

3. Measure Steam Output
To determine the efficiency of the boiler, accurate steam measurements are critical (See Figure 1). For measuring steam output, the InnovaMass iSeries vortex flow meter in insertion and inline versions are the industry-leading vortex flow meter meter for steam measurement. With its ability to measure five process variables at the same time simultaneously, and correct for density changes in steam, the InnovaMass vortex flow meter can give an accurate assessment of the efficiency of the boiler and  maximize steam productivity.

Boiler MACT Decreases Emissions
Since the intention of these Boiler MACT standards are driven by the EPA’s mandate in the Clean Air Act to develop national emissions standards, the hope would be that through Boiler MACT compliance, facilities tune their boilers to ensure the maximum boiler efficiency, which in turn minimizes the source of air pollution.   

Flow meter companies like Sierra can be part of this bigger solution. We can measure the air and fuel going into the boiler, the feed water, and the steam being produced. And from that flow measurement data, end-users can calculate the boiler efficiency and the greenhouse gases in the waste gas coming out of the flue—which is what these Boiler MACT regulations are trying to accomplish! Sierra has everything you need to fully comply with Boiler MACT immediately.

Learn more about Boiler MACT compliance and boiler efficiency.

Download Boiler MACT Information Guide.

Download Webinar on Understanding EPA’s Major Source Boiler MACT Rule.

Need additional help selecting the right flow meter for your boiler?  Contact Us today.

The First Vortex Flow Meter with Apps Wins Innovation Award!


Thank you to the readers of industry publication, Flow Control Magazine, who voted for Sierra’s InnovaMass 240i/241i iSeries multivariable and volumetric vortex flow meters in Flow Control’s 2016 Innovation Awards. Sierra was awarded an honorable mention. Sierra’s tradition and spirit of innovation spanning over 40 years drives everything we do, we are happy that the readers of Flow Control have recognized the InnovaMass as one of the most truly innovative products around.

What Makes InnovaMass iSeries Innovative?*

Simply put, it has Apps!  The InnovaMass 241i iSeries vortex flowmeter has been specifically designed for precise flow energy management to reduce costs and increase productivity in steam, compressed air, natural gas and water applications. The key innovation versus traditional vortex meters is Sierra’s Raptor II OS, which enables software Apps like Sierra’s FloPro and Dial-A-Fluid,
ValidCal Diagnostics, and Meter Tuning.

FloPro is used to improve point-velocity accuracy. Dial-A-Pipe and Dial-A-Fluid are used to change pipe size and fluids without loss of accuracy.  ValidCal Diagnostics makes field calibration and meter health validation easy, and Meter Tuning cancels out external noise to improve accuracy.

InnovaMassImagesOther key features include an insertion version for 2 inches (50.8 mm) up to 72 inches (2M); inline version to 8 inches (DN 200); Accuracy as god as 0.7 percent of reading; temperature to 392°F (200°C); pressure to 1500 psig (103 barg); volumetric or multivariable measurement of gases, liquids, and steam with a single pipe insertion point.

InnovaMass iSeries vortex flow meter measures up to five process variables with one process connection: volumetric flow rate, mass flow, density, pressure, and temperature, which is ideal for highly accurate steam flow measurement. By compensating for temperature and pressure variations, you get true mass flow to maximize your steam productivity and reduce cost-of-ownership.

Again, thanks to the readers of Flow Control for their vote and the confidence in Sierra.


*Official Flow Control Innovation Award write up from the September 2016 Flow Control issue.

Sierra’s Biggest Stories from 2016


2017 is here and this year will bring many new exciting developments at Sierra, but before launching completely into the new year, let’s take a look back at our top stories of 2016.

New at Sierra in 2016

We’re always looking for new ways to communicate and interact with our customers and industry. Find out about three new initiatives we started in 2016 that will continue to grow in 2017.

Minute Flow Tip YouTube Videos

At Sierra, we get very excited about flow measurement and control as you can imagine, and sometimes we want to spread the information we have quickly without a whole lot of fuss. That’s the spirit behind the “Minute Flow Tips” video series we launched in 2016.  We cover a variety of flow measurement control tips to help you strengthen your flow measurement capability to improve your overall process quality.

Application Tech Notes

Sometimes you need quick information about a specific application, that’s where our new Tech Notes come in. You can quickly and easily learn about the challenges of an application and which flow meter or controller will help overcome this and provide precise measurement. You can currently download Tech Notes on Upstream Oil & Gas, Burner Control in Manufacturing and Beverage Manufacturing Applications with more applications coming in 2017.

Sierra on Instagram

In 2016 we expanded our social media presence to Instagram. You can now follow us to get an inside glimpse at what happens at Sierra and view photos of flow meter applications from around the globe. Have a photo of a Sierra flow meter in action? Send it to us and you may just see your name and photo in our feed!

Most Popular Blog Posts from 2016

Our Let’s Talk Flow Blog gives us an opportunity to share with you the latest happenings at Sierra, product news and flow meter education. Here are the top three articles our readers found most interesting in 2016. If you missed one, click through and catch up!

boilermactlogo-3Tuning Your Boiler for EPA Boiler MACT Compliance

Compliance with the EPA’s Boiler MACT regulations was a hot topic in 2016 with the three-year grace period on Major Source Boiler MACT coming to an end. In this article, we discuss the regulations, three ways to tune a boiler for compliance with the regulations and how flow meters can be used to help companies comply.

For Vortex Flow Meters, Accuracy Matters in Steam Energy Flow Measurement

innovamass-landing-page-slideMost facilities managers are in the hot seat to account for all of the flow energy, going in and out of their facility which is no easy task. This mandate is no different for steam flow measurement. In this article, we discuss the challenges of steam flow management and which type of flow meter is most accurate and maximizes steam productivity best.


sierra flare gas solutionsHow to Reduce Methane Emissions with Thermal Mass Flow Meters

Meeting EPA CFR 40 standards for methane emissions in the oil and gas industries continues to be a hot topic. In this blog post, we discuss how flow meters can help companies comply and Sierra’s solutions.

Oldies, but Goodies

We publish a lot of new content each year but there is some content from previous years that continues in popularity and helps customers. Here’s a look at the top three articles from previous years that are still popular with readers.

Flow Meter Do’s and Don’ts with Ammonia

Flashback to Pitcon 2012 for the inspiration for this blog post. There were many engineers and researchers stopping by our booth that year in need of a solution for ammonia flow measurement. Find out the precautions you need to take when using a flow meter in an ammonia application.

Insertion Flow Meter Straight Run Requirements

This instructional post continues to be a helpful resource for those deciding on the most optimal placement of their industrial thermal insertion mass flow meter. Jim Oswald, Sierra’s Technical Support Manager, shares his technical expertise and tribal knowledge to help you find the best point of insertion.

Wireless Networks for the Digital Flow Meter, Part 1

Need to improve network speed to flow meters that are wired into your infrastructure? Wireless communication continues to be a popular topic and this post provides an example of how you can use wireless technology as a solution to this problem.

2017 Preview

This year, as we do every year, we have big plans to make your experience with Sierra even better and more engaging.  Keep an eye out for our increasing library of Application Tech Notes, Infographics, and videos to both inform and help guide you in flowmeter choice and selection. In addition, we have some very exciting product launches and improvements that we know you will love. As always, Sierra will continue to serve our community through outreach programs and focus on employee and customer training programs.

Stay tuned in 2017 – It’s going to be a great year!

Introducing Our New InnovaSonic 207i Ultrasonic Liquid Flow Meter

For Liquid Flow Metering, Optimized for Thermal Energy/ BTU

Sierra is proud to announce the new InnovaSonic 207i ultrasonic liquid flow meter with thermal energy/BTU capability.  Designed, built and calibrated by Sierra in Monterey, California for non-intrusive liquid flow metering, and optimized for thermal energy/BTU measurement, the 207i transit-time ultrasonic flow meter is the ideal turnkey solution for building and district metering, and submetering.

The 207i is the first transit-time ultrasonic flow meter to come with a comprehensive software app package. Use apps for easy setup, field upgrades, and validation of hardware and firmware.  Watch video for more information.

Experience InnovaSonic® 207i Innovation

  • High Accuracy: Real-time dynamic density and heat capacity calculation as liquid temperature changes
  • Ease-of-use and installation with software apps
  • Clamp-on or insertion/optional RTDs for Thermal Energy/BTU
  • Entire system calibrated as a package
  • Flow range from 0.16 to 40 feet/sec (0.05 to 12 meters/sec)
  • Pipe sizes from 2 to 236 inches (50 to 6000 mm)

With the launch of the InnovaSonic 207i ultrasonic today, Sierra is now only USA company to design and manufacture what we call the BIG-3 flow measurement technologies– Immersible Thermal, Vortex Shedding, and Transit-Time Ultrasonic.

Stay tuned, in the weeks to come, there will be more Sierra BIG-3 news to share.

Get to know our new InnovaSonic 207i today.

How Does a Water Flow Meter Work?

207iA water flow meter is a device that measures the amount of water flowing through a pipe.

There are several water flow meter technologies to choose from depending on the water measurement application, maintenance requirements, and budgetary terms.  Each of these types of water flow meters has a unique principle of operation, specific application benefits, and overall cost-of-ownership. The question is: What water flow meter should you choose for your water flow measurement application? There are four primary types of water flow meters: mechanical water flow meters, vortex volumetric flow meters, ultrasonic flow meters or magnetic flow meters.

4 Types of Water Flow Meters

  • Mechanical flow meters – The most common and economical type of water flow meter are the mechanical types of water flow meters which measure flow through turbine rotation with a propeller, shunt or paddle wheel design.  These mechanical water flow meters work by measuring the speed of flowing water running through the pipe that causes a turbine or piston to rotate. The volumetric flow rate of the water is proportional to the rotational speed of the blades. The downside with mechanical water flow meters for water measurement is that they may clog up when the water is dirty or has larger particles which increases maintenance costs. Mechanical water meters also don’t work well with a low flow of water.
    Turbine Flow Meter
  • Vortex flow meter – Vortex water flow meters use vortices shed from a sensor immersed in the flow. Vortices are forces of nature, “swirls” formed as a fluid moves past an obstruction, like water flowing around a rock in a stream or the wind past a flagpole. In a vortex meter, a sensor tab flexes from side to side as each vortex flows past, producing a frequency output that is directly proportional to the volumetric flow rate.  Multivariable vortex flow meters measure up to five process variables with one process connection: volumetric flow rate, mass flow, density, pressure, and temperature.  Insertion vortex meters work well on very large pipes since they can be inserted into the flow by hot tapping with a retractor.
    diagram of vortex flow
  • Ultrasonic flow meter  Ultrasonic water flow meters use ultrasound to measure the speed of a fluid flowing in the pipe to measure volumetric flow. In a transit-time ultrasonic liquid flow meter, an ultrasonic signal is transmitted in the direction of the flowing fluid downstream, and then another signal is transmitted against the flowing fluid upstream. In its most basic form, the time for the sonic pulse to travel downstream is compared to the time for the pulse to travel upstream. This differential time is then used to calculate the velocity of the flowing fluid. The meter then uses this fluid velocity to calculate the volumetric flow rate in the pipe. BTU energy measurement can also be derived from the volumetric flow rate and the temperature difference between the hot and cold legs. Clamp-on ultrasonic meters measure water from outside of the pipe by shooting pulses of sound through the pipe walls, so they are ideal for measuring water flow in large pipes and have application flexibility. Ultrasonic Principle of Operation
  • Magnetic flow meter  Magnetic flow meters use a magnetic field to measure the speed of a fluid flowing in the pipe to measure volumetric flow. They use Faraday’s Law of Electromagnetic Induction. According to Faraday’s Law, when liquid flows through a magnetic field it generates voltage. When the fluid is flowing more quickly, more voltage is generated. The voltage generated is proportional to the movement of the water; electronics process the voltage signal into the volumetric flow rate. Magnetic flow meters have an intermediate accuracy, so they are not suited for custody transfer applications and cannot work on pure water since there are no ions to measure.
    diagram of how a magnetic flow meter works


The best type of water flow meter to use depends upon the specific application, some flow meters work better when measuring different things. To learn more, watch videos, read white papers and use selection tools to find the right Sierra flow measurement product for your water and liquid flow application.

Preventable Mistakes with Vortex Flow Meters

Vortex flow meter technology is an ideal technology for many applications particularly saturated and supersaturated steam, volumetric water applications as well as flow energy management (natural gas, compressed air, steam, water) in facilities and large campuses. In some of these applications, vortex installations can be tricky and take flow expertise for the most successful installations. Kam Bansal, the Director of Engineering, has some useful tips for successful vortex installations and common mistakes to avoid to get the most out of your vortex flow meters in your application.

Vortex Flow Meter Mistakes to Avoid

#1 – Water Hammer

If you’ve ever turned on your shower and the pipes made a loud bang, you’ve probably experienced the phenomenon called water hammer. Most commonly caused by opening or closing a valve too quickly, it occurs when a mass of water zooms through a pipe with enough momentum to pack a serious punch.

Commercial pipelines often allow these “water hammers” to reach such high speeds that they can damage the flow meter sensor. To alleviate the “water hammer” phenomenon,  try to avoid condensation in steam systems by opening and closing valves gradually to equalize pressure.

#2 – Incorrect Range or Pipe Size

Vortex flow meters are highly specialized devices, and each one is made-to-order based on customer application specifications. This means an out-of-the-box meter will only work for the original order’s conditions. Usually, you can’t make any changes once the meter is installed in the field. However, the software apps offered by Sierra’s InnovaMass iSeries allow you to change variables in-the-field with dial-a-pipe, and tune meter factors in-situ to fit your needs.  You can also adjust your vortex meter via the local pushbutton display interface. In addition, if you think your application may approach the meter’s maximum pressure or temperature, it’s better to buy a higher-rated meter than risk overheating or over pressurizing.

Now that you are aware of these preventable mistakes, think about your vortex meter installation process and specification process.

If you need a refresher, watch this short video by Director of Engineering, Kam Bansal, for an in-depth explanation on how to solve some of the common vortex installation mistakes.

Have technical questions? Comment below or contact us.

Sierra’s Top Flow Blogs of 2017

best of 2017

Another year has come and gone, and it certainly was a big one for Sierra and our customers! Let’s look back at the news and top content that we shared with you in 2017.

Most Popular Blog Posts from 2017

We love sharing our news and providing useful flow meter information with you through our Let’s Talk Flow Blog. Here are the posts that resonated best with our readers last year, complete with links so you can catch up if you missed any.



Measure All Flow Energy in Your Facility-ONE Solution-Three Metering Technologies 

The pressure is on your shoulders to make the smartest decisions in 2018 to measure all the gas, liquid, and steam flow energy in your facility. In this video, learn how ONE complete flow energy management solution can simplify the flow energy management in your factory.


minute.flow.tip.John.S.1.3.17[Minute Flow Tip Video] Mass Flow Versus Volumetric Flow Technology

What’s the Mass Flow Advantage? Chief Engineer, John Smitherman explains the vast differences between gas mass flow rate and volumetric flow rate.  Learn why mass flow technology greatly improves measurement accuracy in this Minute Flow Tip Video.


scott.video.207i.installation.1.3.17Making Ultrasonic Liquid Flow Meter Installation Easier
Clamp-on Ultrasonic flow meters are the perfect flow meter for liquid flow measurement. But finding the perfect signal can sometimes be difficult. Sierra’s Product Line Director, Scott Rouse, demonstrates how on board Software Apps on an InnovaSonic 207i ultrasonic liquid flow meter make set up simply with an easy “12-step” program.


compod.blog.2017.Best.of.1.3.17How to Supercharge the SmartTrak Mass Flow Controller with Compod
Learn how to streamline, simplify, and save time and money with the Compod upgrade for the SmartTrak 100 mass flow meter and controller.  Set up simple process control systems driven by SmartTrak with Compod without the need for PLCs or computers.




4-20.image.2017.best.of.1.3.18 Understanding  4-20 mA Current Loop Communications
Many times, customers ask  “how do I get accurate 4-20mA output readings?” for 4-20mA output devices. Kam Bansal, Director of Engineering, explains 4-20mA communications protocol, step-by-step to dispel the complications and confusion around the protocol to get you set up and running.



Oldies, but Goodies

The more things change, the more they stay the same. Or so it seems based on the continued popularity of these older posts that continue to draw readers.

Tuning Your Boiler for EPA Boiler MACT Compliance
Our most popular new post in 2016 remained hot through 2017 as the three-year grace period on the EPA’s Boiler MACT expired in January 2017. In the article, we discussed the regulations, three ways to tune a boiler for compliance, and how flow meters can help your company comply.

Flow Meter Do’s and Don’ts with Ammonia
Five years after it was published, this post is still one of our most popular. We knew we had to write this post when a number of engineers and researchers stopped by our booth at Pitcon in 2012 to ask about ammonia flow measurement. Years later, the precautions stand true and are critical if you are using a flow meter for an ammonia application.

Methods & Pitfalls of In-Situ Calibration Validation of Thermal Flowmeters
“In-situ” means in place, meaning that you don’t have to return your instrument to the facility to have it recalibrated and recertified. You can certainly see the allure of that, but there are pitfalls. Read this post to learn how to get reliable results and avoid false positives.

We hope you enjoyed this look back at 2017 and that you continue to follow us through 2018. We look forward to bringing you more of the best flow information online in the coming year.