{"id":3579,"date":"2026-10-29T11:48:45","date_gmt":"2026-10-29T03:48:45","guid":{"rendered":"http:\/\/www.universalsteelbd.com\/blog\/?p=3579"},"modified":"2026-10-29T11:48:45","modified_gmt":"2026-10-29T03:48:45","slug":"can-a-weighing-transmitter-be-used-in-underwater-weighing-applications-4579-de092d","status":"publish","type":"post","link":"http:\/\/www.universalsteelbd.com\/blog\/2026\/10\/29\/can-a-weighing-transmitter-be-used-in-underwater-weighing-applications-4579-de092d\/","title":{"rendered":"Can a weighing transmitter be used in underwater weighing applications?"},"content":{"rendered":"

If you\u2019ve ever scrolled through our product catalog or shot us a quick question about our weighing transmitters, you might\u2019ve stumbled on a random line item labeled \u201csubmersible-rated\u201d and thought\u2014wait, can this thing actually handle underwater weighing? As someone who\u2019s been selling these bad boys out of our warehouse for the better part of a decade, I get the confusion. People see \u201cweigher\u201d and \u201ctransmitter\u201d and immediately zone out when you mention marine environments, like the two are from totally different worlds. Let\u2019s break this down like we\u2019re chatting over a beer after a long workday, no stuffy engineering jargon that makes your eyes glaze over. Weighing Transmitter<\/a><\/p>\n

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First off, let\u2019s set the scene because \u201cunderwater weighing\u201d isn\u2019t a one-size-fits-all term. I\u2019ve talked to folks in aquaculture who need to track how much their full tuna cages weigh 50 feet down to make sure they\u2019re not overloading their moorings; shipbuilders who have to weigh entire hull sections submerged in dry docks to check for material consistency; even marine researchers who deploy sensor buoys that need to tell them if their mooring weights are shifting mid-ocean. These aren\u2019t the same as hanging a fishing scale over a boat rail and guessing a fish\u2019s weight\u2014they\u2019re precision jobs that can\u2019t afford a dud reading because your transmitter got spooked by salt water or pressure.<\/p>\n

Here\u2019s the thing: standard weighing transmitters? They\u2019re not made for this. If you take your everyday office or industrial transmitter, yank it out of the control cabinet, and toss it in the water? It\u2019ll be dead faster than a cell phone left in a swimming pool. But that doesn\u2019t mean all<\/em> weighing transmitters are off the table. The key difference is the rating. I don\u2019t just throw \u201cwaterproof\u201d on our specs like every other generic supplier\u2014we test every submersible unit ourselves, because I\u2019ve had reps come back from a job site with a damp transmitter that they swore was \u201cwaterproof\u201d and it\u2019s cost them thousands in downtime.<\/p>\n

Let\u2019s get into the nitty-gritty without boring you. Weighing transmitters work by taking the tiny, squishy (forgive the layman term) signal from load cells\u2014those little metal sensors that bend when weight hits them, sending a super low-voltage signal\u2014and amplifying it, converting it to a digital or analog signal that your control system, phone app, or computer can read. The problem with underwater use isn\u2019t just water getting into the unit (though that\u2019s a big one) it\u2019s pressure. At 30 feet down, the pressure is 14.7 PSI extra on every square inch\u2014twice that at 60 feet, triple at 90. A standard IP65 transmitter (the \u201cwaterproof\u201d that only stands up to a quick hose-down) can handle a light splash, maybe a drizzle, but cram that same unit 50 feet under water and the housing will bow, the seals will fail, and suddenly your signal is toast.<\/p>\n

Our submersible-rated transmitters? We build them with IP68 ratings, not the cheap knockoff IP68 you see on Amazon. IP68 means they can be fully submerged in water (salt or fresh, we test for both) at a specified depth for a set amount of time, no leaks. We rate ours for up to 100 feet consistently, and we\u2019ve had customers push them to 150 feet for short jobs without issues. The housing is made of marine-grade stainless steel, not the flimsy aluminum you get on cheap units\u2014aluminum corrodes like crazy in salt water, and that corrosion messes with the load cell signals, leading to weird, wrong readings. The seals are custom-made nitrile rubber, the same stuff used in scuba gear, so they don\u2019t degrade after months in salt or brackish water.<\/p>\n

But wait\u2014can you actually use<\/em> a standard load cell with these? Most people don\u2019t realize: your underwater setup isn\u2019t just the transmitter. It\u2019s the load cells that sit on the tank, cage, or hull, right? We don\u2019t sell the load cells, but we work closely with load cell manufacturers that make submersible load cells\u2014they have their own water protection, and the two pair perfectly. The transmitter acts as the middleman between the load cells and your data system. That\u2019s the part most folks miss: the transmitter\u2019s job is to turn that tiny load cell signal into something usable, not to hold the weight itself. So as long as the transmitter and load cells are both rated for the same depth and environment, it works.<\/p>\n

I\u2019ve got a great story about this from a salmon farmer in Maine who hit us up last year. He was using a generic transmitter to track his cage weights, but every time a storm rolled in, the transmitter would die, and he\u2019d lose three days of data\u2014meaning he didn\u2019t know if his net was overloaded, which could tear and cost him $100k in fish. He bought three of our submersible units, dropped them 40 feet down on his main cages, and told us later that after six months, they were still running, no issues, even when the water temp dropped to 38 degrees in winter. That\u2019s the stuff that makes my job worth it, right? Solving a problem that other guys can\u2019t.<\/p>\n

Now, let\u2019s talk about the caveats, because I don\u2019t want to sell you a bill of goods. First, even the best transmitter isn\u2019t meant to be left sitting on the seafloor forever. We recommend pulling them out once a year for a quick check\u2014wipe off the salt, inspect the seals, make sure the connections are tight. That\u2019s not a big deal, it\u2019s just regular maintenance, like changing the oil on your truck. Second, you can\u2019t just plug it in and go without calibrating it for the underwater environment. Water pressure can slightly skew load cell readings, so we give every customer a free calibration guide for submersible use, and our techs are on call to walk you through it, no extra charge. Third, if you need to go deeper than 100 feet? We can build custom units, no problem. We\u2019ve done units for offshore wind projects that sit 200 feet down, so it\u2019s not a one-size-fits-all limit, just our standard off-the-shelf is 100 feet.<\/p>\n

Another thing people don\u2019t think about: signal interference. Underwater, salt water is a great conductor, so if your transmitter is sending a wireless signal (yes, we make submersible wireless transmitters too) it can weaken or get garbled. Most marine applications use hardwired connections for reliability, so we build our submersible transmitters with waterproof cable glands that seal the cable entry, so no water gets in and the signal stays strong. We also have surge protection built in, because lightning strikes or power surges are way more common near coasts, and they can fry a transmitter faster than a power wash.<\/p>\n

I get why some folks are skeptical. There\u2019s a lot of snake oil in the industrial parts world, especially when it comes to water gear. I\u2019ve had customers come to us after buying a cheap submersible transmitter from a big box supplier that died after two weeks, and they\u2019re worried we\u2019re all the same. We\u2019re not. We test every unit for 72 hours straight submerged in a tank, checking readings every minute, before it leaves our warehouse. If it doesn\u2019t hold a signal, if the pressure test shows a leak, it goes back on the bench, not to a customer.<\/p>\n

So to circle back to the original question: Can a weighing transmitter be used in underwater weighing applications? The short answer is yes, but only if it\u2019s rated for that job. Standard transmitters? No way. But purpose-built submersible weighing transmitters? Absolutely, and they\u2019re been used successfully for everything from aquaculture to shipbuilding to deep-sea research for years.<\/p>\n

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If you\u2019re working on an underwater weighing project, whether it\u2019s a small 20-foot test or a 200-foot offshore installation, we can help. We don\u2019t do one-size-fits-all, so just tell us what your depth is, what environment (salt or fresh water), what load cells you\u2019re using, and what data system you need to connect to, and we\u2019ll hook you up with the right unit, plus walk you through installation and calibration, no hoops to jump through. Just shoot us a message or give our team a call, we\u2019re here to make your project work without the headaches.<\/p>\n

Force Sensor<\/a> References<\/p>\n

    \n
  1. National Institute of Standards and Technology (NIST). Load Cell and Weighing Transmitter Performance for Marine Applications, 2021.<\/li>\n
  2. International Electrotechnical Commission (IEC). Standard 60529: Degrees of Protection Provided by Enclosures (IP Code), 2019.<\/li>\n
  3. Aquaculture Engineering Society. Submersible Weighing Systems for Cage Aquaculture, 2022.<\/li>\n<\/ol>\n
    \n

    Yixing Silvanus Electric Manufacture Co., Ltd.<\/a>
    With abundant experience, we are one of the most professional weighing transmitter manufacturers and suppliers in China. We warmly welcome you to buy bulk advanced weighing transmitter in stock here and get pricelist from our factory. All customized products are with high quality and competitive price.
    Address: No.30 Fukang Road, Xinjie Street, Wuxi, Jiangsu, China
    E-mail: jacky@silvanus.cn
    WebSite:     https:\/\/www.kunsens.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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