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The Fieldpiece Portfolio Keeps Getting Better and Better.

If this continues, we’re going to need a bigger product catalog. At Fieldpiece, our portfolio continues to expand. Whether you want to recover refrigerant lightning fast, pull a complete vacuum with confidence, measure pressures without being tied down by cumbersome hoses or diagnose a complex system without the run-around – we have you covered. Our full range of market-leading tools are designed exclusively with HVACRs in mind. While each instrument we craft is unique, they all have one thing in common: They’re designed to make the work of the HVACR professional easier, faster and better. 

How do we make sure of this? We’re always asking questions of HVACR professionals. We go out in the field and test in real conditions to understand exactly the tools you need to get the job done right. We know the temperature ranges you need to measure, the expectations you need to meet and the conditions you need to work under. When you pick up anything from Fieldpiece, you’re getting something that’s tough, dependable, versatile and functional. A product made just for you. 

This is how we know the features that make your life easier, and the ones that don’t. It’s why many of our products come with a back-lit screen that you can easily read in a dark crawlspace, or why our manometers have a strong magnet that stays right in place on the duct.  

We also know the history of the industry and that “beer can cold” just doesn’t cut it these days. That’s why we developed and invented and patented Rapid Rail™ Sensor Technology for our pipe clamps. This unique technology gives you direct, reliable and almost instantaneous readings – even on wet or damp pipes. We also patented the RunQuick® Oil Change System for our vacuum pumps. It lets you change the oil without turning off the pump or losing vacuum and without making a mess. 

Our innovative portfolio doesn’t stop there. For instance, the SDMN6 manometer was specifically designed with a pressure switch tester so you can quickly diagnose whether a switch is failing—taking guesswork out of the equation. It’s a simple tool, but one that professionals thank us for every day.  

It’s also why our Job Link® System is designed to work with our core Fieldpiece tools while also integrating their functionality seamlessly. We didn’t have to do it this way, but if we didn’t, that wouldn’t make your life easier. 

In the Fieldpiece portfolio, our tools just work. We’ve been in the industry for 30+ years; we understand the business today; and we’ll keep on learning and innovating tomorrow and into the future. 

Why? Because HVACR systems continue to change. In fact, since we started three decades ago, the whole industry has changed — from the refrigerants that keep things cool to the microprocessors that power a system. One thing that hasn’t changed is our commitment to developing the tools you need out in the field. 

That’s why we’ve done more than just keep up. We continue to innovate and change the game to make your job as an HVACR master. Interested in completing your collection of Fieldpiece tools and instruments? You can start right now. 

 

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Blog

What’s the Big Deal about Split Dual Port Manometers?

As systems get larger and more and more complex, HVACR field service technicians wind up wasting a lot of time and effort to diagnose a problem. We’ve all been there: On the jobsite, you need to check total external static pressure as well as gas pressures at different locations across a system. On commercial jobs in particular, components are often spread across an expansive facility. Plus, in the labyrinth of ducts and pipes, there are typically a few ideal locations where you know you’ll get the accurate measurements you need. You probably aren’t looking forward to snaking a tube across a room, around a bend and down a hall just to compare pressures across zones.

So, you reach into your toolkit and start getting some tools set up in the first of many locations that you’ll need to take readings; but first you’ll probably need to spend five minutes untangling the spaghetti mess of tubing from the last time you had to do this. To everyone in the field, tidy hose management is a goal, but not always a reality.

After you take your first reading, and probably a few others depending on the size of the system, you’ll need to make sure they’re right. To check and see, you’re probably trying to take readings off of awkwardly-placed meters, moving your tools, and taking more readings off of gauges you can barely see – all just to ensure the changes you made worked.

This isn’t the best use of your time or your customer’s money. So, stop! Fieldpiece’s manometers are split port and they’re also wireless. With the JL3KM2 Job Link® System Dual Port Manometer probe kit, your probes don’t need to be connected to each other to work. It makes it easy to set up manometer probes to get your filter pressure drop, coil drop and total external at the same time. There are no hoses to tangle with and you’re free to place your probes wherever you want for the best possible reading. Also, to read each tool, just use the Job Link® App on your mobile device.

You’ll be able to set up many different probes across the system and leave them in place as you run your tests. They’ll wirelessly relay real-time information back to the Job Link® App. Right away, you’ll have a bird’s-eye view of every level and pressure you need. The flexibility of probe placement also makes it much easier to sense duct leaks and air restrictions.

How far is the range? About 1,000 feet! That means these probes can transmit a signal from the top of a building down to the basement, or from way over on the other side of the factory back to the control room. Each probe has a strong magnet, so they’ll attach anywhere and will stay put throughout the test.

No matter where they’re hooked up, you’ll be able to use these innovative manometers to check for airflow restrictions and measure gas pressures. Then, when you’re making changes to the system, you’ll be able to see all of their values changed in real-time on the Job Link App.

Our new manometers are designed to work with as many as eight different probes. This is ideal if you’re measuring in a multi-point application. You can put a couple probes on the system on the roof, a few more on the ducts in the basement, and then you can keep track of everything from one place to quickly diagnose a problem or fine-tune a system. It’s time to end the run-around once and for all.

You’ll be able to work the way you want without scrambling all over hooking-up and disconnecting probes over and over. You’ll save time, money and get accurate real-time information so you can quickly assess the health of the entire system.

Sound interesting? Check out our JL3KM2 Job Link® System Dual Port Manometer today: https://www.fieldpiece.com/product/jl3km2-job-link-system-dual-port-manometer-probe-kit/.

 

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Tech Articles

Want to Pull a Better Vacuum? Start by Learning How to Correctly Use your Vacuum Gauge.

IT’S ALL ABOUT THE MICRONS.

The vacuum gauge is a vital instrument for any HVACR technician. It helps you read the difference between the atmospheric pressure on the outside and inside of the air conditioning unit. This allows you to diagnose issues with the pressure inside the unit. This is usually the first step to a service you may provide. Here at Fieldpiece, we want to help prepare any HVACR technician for their jobs. If you have more questions about what a vacuum gauge does and how to read one, continue reading to learn more about it. If you have any other questions, be sure to give us a call.

Why we pull vacuums.

If you’re installing a new HVACR system or making repairs, it’s important to remove all moisture and non-condensable gasses before adding any refrigerant. Moisture in the system can turn to acid and freeze, and other non-condensables like nitrogen, air, water or other refrigerants can change the pressure readings in the system. Removing all of these can directly increase the expected life and efficiency of the system. It’s as simple as that.

Why 500 microns?

It takes a deep vacuum of 500 microns or lower to boil off and remove all moisture and non-condensable gasses from a system. Even though microns are small, there’s a massive difference between 500 microns and 1,000 microns. At 1,000 microns, water boils at 1 degree F. While at 500 microns, water boils at -12 degrees F. To make sure the system is ready for refrigerant, you need to make sure the vacuum you pull is deep enough to remove all moisture and non-condensable gasses.

While 500 microns is a popular rule of thumb, each system manufacturer has their recommended pressure for a vacuum and you should definitely check the manual before pulling one.

Small but mighty.

Since a micron is so small, fluctuations in the readings on vacuum gauges are common. We’re measuring differences that are so tiny, that even bumping a gauge or jostling a fitting can cause them to fluctuate. This article should help you better understand the readings on your vacuum gauges and what fluctuations can mean.

PROPER SET UP 101

Choosing the right tools for the job.

A vacuum gauge is the best tool to measure deep vacuum and “see” what’s going on with the system. Slow micron rise indicates moisture still burning off while a faster micron rise indicates a system leak. Digital manifolds may have a built-in, accurate vacuum gauge for convenience but leaky hoses/connections and distance from the system affect readings.

Far, far away.

Place the vacuum gauge where you want the 500 microns to be – on the system! Definitely don’t put it right next to the pump which is producing 20 microns of ultimate vacuum in order to pull the system down to 500 microns quicker. Similarly, you don’t want to install a thermostat right above a register. Best practice is to place the vacuum gauge as far back on the system as you can, as this is the last place to reach 500 microns due to system components and line set bends that create restrictions.

Clear those restrictions.

If you want your vacuum pump to quickly and easily pull your system into a deep vacuum, you need to eliminate any flow restrictions in the system that may slow it down. Sometimes, it might be easier to use a pair of charging hoses to hook up the pump, but vacuum-rated hoses have a larger diameter and that extra room facilitates more flow to pull a vacuum. Also, remove the valve cores from the service ports on the system. Each of these create a restriction that makes your evacuation take significantly longer. To pull the fastest vacuum, you want to have the shortest hose length and the biggest hose diameter.

UNDERSTANDING YOUR READINGS

Fluctuations are normal.

Every time you pull a vacuum, it takes the system a while to equalize to a stable pressure. Your values can and will fluctuate throughout the process – sometimes, these changes can be surprising and make you think you have a leak. However, these varying values are to be expected. After you pull down to 500 microns, wait five minutes to give your system some time to reach an equilibrium. The levels will most likely continue to fluctuate even after you pull the vacuum. This could be due to a host of factors.

Blame the ball-valve.

First, the hose ball-valve that you use to attach your vacuum pump often holds a small amount of gas inside the valve itself. Since vacuum gauges measure tiny amounts of micron change, this small amount of gas in the valve could cause your readings to spike as soon as you close the valve. If you see a slight spike in the pressure when you turn this valve and then the pressure comes back down quickly, it’s normal and not something to be concerned about. To prevent this, periodically open and close the ball valve during evacuation.

Did someone out-gas?

A second reason for the fluctuations could be outgassing. Every hose and O-ring in the system could adjust slightly when you’re pulling a vacuum, and this slight movement could release a bit of gas. Much like the ball-valve that we mentioned above, some gas could be trapped in valves or fittings, and only under a nearly total vacuum will they release this gas. This could cause the readings to fluctuate slightly. Again, this is normal.

Bubbles in your sight glass?

Sometimes, when you’re pulling a vacuum using the Wireless 3-Port or 4-Port SMAN Refrigerant Manifold and Micron Gauge you’ll notice bubbles appearing in the sight glass of the manifold. This could be due to many things and it doesn’t necessarily mean you have a leak. Bubbles can be from the moisture in the system that’s being evaporated. Give it a second and see if the bubbles dissipate. If you’re continuing to pull a vacuum and the bubbles remain, it could mean that you have some leftover oil with moisture in the manifold block. A quick fix is to use rubbing alcohol or RX11 flush to clear the manifold of refrigerant or other contaminants that could be causing the bubbles.

What if there’s too much moisture?

If you’re trying to pull a vacuum and it’s taking much longer than it should, this could be caused by excess contaminants or moisture still in the system that need to be flushed out. The vacuum pump can only do so much. A good way to make sure that your system is clear of excess moisture is to perform a triple evacuation. This involves pulling the vacuum down anywhere between 1,000 to 2,000 microns, then flushing nitrogen into the system to a pressure of 3-5 PSIG for about five minutes, before pulling the vacuum down to 500 microns again. The process should be repeated a third time by pulling a vacuum down to 300 microns, before repeating the nitrogen flushing process; and finally, performing a standing vacuum test for ten minutes with the pump isolated.

Is it a leak?

After you’ve pulled your system to 500 microns, it’s time to close the valves, isolate the system and turn off the pump. This helps you see if the vacuum you pulled is deep enough and if the system holds pressure. As the system equalizes, you’re going to notice slight fluctuations in the microns. How can you tell the difference between the slight adjustments in pressure due to outgassing or other normal fluctuations and those that are actually caused by a leak?

After you isolate the pump, if the micron value increases quickly and never stops until it reaches atmospheric pressure you probably have a leak.

If the pressure slowly increases over time, and eventually levels off higher than 1000 microns. This tells you that you still have some moisture in the system, and you need to turn the pump on again and pull a deeper vacuum.

Therefore, it is imperative to connect your vacuum gauge directly onto the system and isolate at the system. Doing so ensures the reading of the vacuum gauge is not influenced by any potential leaks in hoses or connections in your vacuum set up.

Categories
Tech Articles

Think Your Readings are Accurate? It Might Be Time to Think Again.

A how-to for measuring pipe temperatures with the highest accuracy guaranteed using the right large pipe clamp thermocouples, and an exploration of why refrigeration charge, superheat, and subcooling are too critical to be taken lightly.

According to the U.S. Energy and Information Administration, the commercial and residential sectors account for the majority of energy consumption in the nation. Commercial buildings account for the highest usage, making HVACR system efficiency a top priority not only to reduce cost of ownership and meet the environmental challenges we face today but also to ensure HVACR pros keep the contracts they work so hard to earn—and retain long-term clients that are pleased with their efficient and well-maintained systems.

It’s important to measure an accurate superheat and subcooling to help determine an optimal refrigerant charge, because even small inaccuracies can result in: increased cost of ownership over time; lost commercial contracts due to repeated call-backs or subpar efficiency; full system failures due to increased wear and tear and/or spoilage loss due to underperforming refrigeration systems; compliance fines from improper temperature maintenance, and penalties and shut-downs in commercial refrigeration settings.

The stakes are high. So, how can you be certain your readings are accurate?

“Beer Can Cold” Just Doesn’t Cut It on Modern Systems.

Forty-plus years ago when homes were just starting to get A/C window units, it was common to gauge system refrigeration charge by simply grabbing the suction line near the condenser with a bare hand to determine whether it was as cold as a frosty cool beer should be, hence the term “beer can cold.” If it wasn’t, we added refrigerant. If it was, we considered the job done.

It was highly subjective and massively imprecise, but it passed as a rule of thumb for these older systems that were built for hardiness vs. efficiency. Their compressors were oversized, their coils had extra room around them, and their fan motors had high horsepower—leaving a good amount of flexibility in the amount of refrigerant used.

Today’s critically charged systems, however, are built tightly and precisely, and made for efficiency. This means refrigerant charge has to be within ounces of the correct amount…or else. Instead of guessing with our hands for an arbitrary measurement, accuracy is necessary, especially with today’s precision-engineered systems. Taking accurate measurements of both the superheat on the suction line and subcooling on the liquid line are critical to ensure system efficiency is the industry gold standard.

Why Superheat & Subcooling Matter.

Most techs always check out a system’s refrigerant charge, but superheat and subcooling readings are often something we learn about in school and then don’t think much about in daily life. That said, these readings can be a critical tool in an HVACR pro’s troubleshooting arsenal and can make more difference than many techs realize.

Superheat and subcooling calculations can provide vital clues as to where a system failure is occurring to help technicians zero in on where a problem lies. As a refresher, to figure out superheat measurement, two measurements are taken from the suction line: one for pressure and one for temperature. Superheat is the number of degrees above the temperature that refrigerant changes from liquid to gas. The rule of thumb is that it should be between 8-12 degrees superheat, but of course, we should always default to the manufacturer’s recommendation to be sure that only gas enters the compressor and no liquid is trickling in where it doesn’t belong.

Subcooling involves two measurements as well: one for pressure and one for temperature, but this one is taken from the liquid line. In this case, the rule of thumb is 8-14 degrees below the temperature that gas turns to liquid to be in the safe zone to ensure only liquid is fed into the metering device. Again, it is always best to adhere to the manufacturer’s recommendations.

An improper superheat value can indicate a range of issues such as a clogged filter drier, a refrigerant undercharge or overcharge or improper airflow. A bad subcooling value can indicate an overcharge or undercharge, liquid-line restriction or insufficient condenser airflow. Miscalculated readings can cause a technician to overcharge the system and compromise the compressor.

Just as we know that, with refrigerant, too much or too little are common issues—with too little often indicating a system leak—most of us are also well-aware that when refrigerant gets to the metering device it needs to be in liquid form, and when it gets to the compressor, it needs to be gas, otherwise a whole host of problems can ensue. Why then, don’t we take these measurements on every system, every time?

Probably because in the past it has been a big pain in the rear—that’s why!

Tapes, Straps and Zip-Ties, Oh My!

Even getting one reading in the tight spaces and odd corners of most commercial and even residential/light commercial spaces requires some doing. Trying to get multiple readings for superior calculations and advanced troubleshooting has seemed less like a necessity and more like a nice-to-have that’s not quite worth the hassle.

Why? Because most pipe temperature measurement instruments have been designed with tapes that fall off the moment there’s any condensation or straps that require two hands to apply (which often just isn’t possible in small, tight and awkward spaces) as well as zip ties (that may or may not allow for consistent pressure) and let ambient air get in the way of a precise reading.

Techs shouldn’t feel like some sort of a MacGyver, jerry-rigging their tools to get a measurement. We should be able to trust our readings, but unfortunately, with most tools – we just can’t. Even for those pros that feel confident that their technique is flawless, many are blissfully unaware of the common culprits coming between them, their tools and precision work.

PSA: Don’t Believe Every Reading You Take. Most Measurements are Actually Wrong.

It’s estimated that as many as 90% of common pipe temperature readings are wrong. Worried you may be among those putting their trust in a tool that you shouldn’t to get a reading you can’t rely on?

It’s important to know that most tools will easily give you an inaccurate reading due to outside interference—and when it does, you likely won’t even know it. With no systems to alert you that the reading is off, your measurement could be impacted by paint, dirt, ambient air, improper sensor calibration, condensation or insulation that’s gotten caked onto the pipe itself—all factors that can throw a reading off by as much as 3 to 4 degrees, with you none the wiser.

If the readings are off, not only is your client’s system at risk, but so is your professional reputation.

The Rapid Rail™ Sensor Technology Difference.

For the types of readings we’re talking about, a clamp design tool is a superior innovation in and of itself to both take a reading with one hand and ensure consistent pressure. You may also have heard about Fieldpiece’s patented Rapid Rail sensor technology. This matters because, with two sensors, one either side of a pipe clamp tool, the electrically conductive pipe itself completes the circuit on both sides to provide a stabilized reading in seconds (versus minutes required for other tools) on a clean pipe. If the pipe clamp detects intrusive elements that can affect readings, such as paint, dirt, dust, grime or the myriad of other factors, it simply will not provide a reading at all, unlike other tools that would provide a false, inaccurate reading.

With Rapid Rail on the wireless JL3LC, hear a single beep? You know it’s working. See a flashing yellow light and hear double beeps? This indicates you do not have a solid connection. You need to use an emery cloth to clean off the pipe to ensure a proper connection. Do this, and your good, clean contact on a pipe will ensure the accuracy of your temperature readings. Knowledge is power, right? What more could you want?

Size. That’s what.

Current products are underwhelming in their range, with the second largest competitor pipe clamp on the market measuring only 3 ½”. That’s why Fieldpiece has innovated yet again to deliver the:

• Large Pipe Clamp Type K Thermocouple TC48
• Job Link® System Premium Large Pipe Clamp Probe JL3LC

Meet the Largest, Most Precise Pipe Clamps in the Industry.

Equipping HVACR pros with the most advanced tools on the market is the Fieldpiece thing to do. Realizing inaccurate readings on large pipes were the status quo but refusing to settle for it, Fieldpiece solved the issues of inconsistency, inaccuracy, improvisation, inconvenience and size through two pipe clamps that can do it all, and do it right the first time – no zip-ties, no waiting, no second-guessing.

With the ability to measure up to 4 1/8” or to scale down for pipes as small as 3/4”, these high-tech clamps are the largest available on the market.

They are rugged, versatile, water resistant and always spot on, providing highly accurate readings every time. And, with consistent clamping force and our patented Rapid Rail Sensor Technology, they are unaffected by ambient air, dust, paint, corrosion or moisture on the pipe surface.

Plus, with a wired version that offers an extra-long six-foot tangle-free cord eliminating the need to crouch and squat while waiting for a reading, and a wireless version that can take a reading through even the thickest commercial freezer walls, these clamps let you do it all, even with one hand tied behind your back. (Not that you need to be doing tricks, but a one-handed operation does come in pretty darn handy in some of those harder to reach areas.)

With the TC48 and JL3LC, you only get accurate readings. Other tools will deliver readings no matter what, even when they are wrong – leaving techs with little more than a hope and a prayer that they’ve got it right. With Fieldpiece technology, you are guaranteed accuracy, and if there is interference, the TC48 and JL3LC will not generate a reading at all—eliminating false readings and ensuring only precise results.

The Gold Standard for HVACR Requires Constant Innovation.

In the last 40 years, Fieldpiece has led the charge in providing HVACR professionals more than just the basic tools needed for the job. Fieldpiece is always looking for the next innovation; offering new solutions often before techs realize there’s an area for improvement. We’ve worked hard to cultivate a reputation as an “all or nothing” company that believes in accuracy and precision above all else, and we believe that techs should settle for nothing less than the best.

Even way back when “beer can cold” was the go-to approach, Fieldpiece was the first to innovate a tool to calculate superheat/subcooling (it’s ASX14, SSX34), and it wasn’t long before nearly everyone in the field began to realize the importance of these readings. Now, with the addition of the Large Pipe Clamp Type K Thermocouple TC48 and the Job Link System Wireless Large Pipe Clamp JL3LC to its full suite of products, Fieldpiece has innovated yet again.

What’s Next?

Check out our JL3LC Job Link® System Premium Large Pipe Clamp and TC48 Large Pipe Clamp Type K Thermocouple product pages at www.fieldpiece.com for even more details about the features and benefits of these hot new products. Ready to buy? Visit your local distributor to get one on your truck today!
And, trust us that the forward progress won’t stop here. Stay tuned for the next big innovation in HVACR technology by signing up for our newsletter, following us on social media and checking back at www.fieldpiece.com regularly!