[{"data":1,"prerenderedAt":503},["ShallowReactive",2],{"site-footer-common":3,"glossary:ip66-ip65-enclosure-rating":45,"glossary-related:ip66-ip65-enclosure-rating":145},{"id":4,"extension":5,"footer":6,"meta":40,"navbar":41,"stem":43,"__hash__":44},"common\u002Fcommon.yml","yml",{"tagline":7,"links":8,"sections":9},"Acoustic cleaning intelligence for industrial fouling, soot, ash, dust and build-up.",[],[10,19,31],{"title":11,"links":12},"Product",[13,16],{"label":14,"to":15},"How it works","\u002F#product",{"label":17,"to":18},"Cost assessment","\u002F#hero",{"title":20,"links":21},"Company",[22,25,28],{"label":23,"to":24},"What we build","\u002F#about",{"label":26,"to":27},"Careers","\u002F#careers",{"label":29,"to":30},"Contact","\u002F#contact",{"title":32,"links":33},"Resources",[34,37],{"label":35,"to":36},"Blog","\u002Fresources\u002Fblog",{"label":38,"to":39},"Glossary","\u002Fglossary",{},{"links":42},[],"common","YocmZRy1AYfBbpgGVms-zhdiABlF8VTxHx6h4rDmZBA",{"id":46,"title":47,"aliases":48,"body":52,"category":126,"description":127,"extension":128,"meta":129,"navigation":130,"path":131,"relatedTerms":132,"seo":135,"sources":138,"stem":142,"term":143,"__hash__":144},"glossary\u002Fglossary\u002Fip66-ip65-enclosure-rating.md","IP66 \u002F IP65 enclosure rating",[49,50,51],"IP66","IP65","ingress protection rating",{"type":53,"value":54,"toc":120},"minimark",[55,65,79,84,103,107],[56,57,58,61,62,64],"p",{},[59,60,49],"strong",{}," and ",[59,63,50],{}," are IEC 60529 ingress-protection ratings indicating the degree to which an enclosure protects internal contents from dust and water. Both are dust-tight (the first digit \"6\"); they differ in water-protection level:",[66,67,68,74],"ul",{},[69,70,71,73],"li",{},[59,72,50],{}," — protected against low-pressure water jets from any direction",[69,75,76,78],{},[59,77,49],{}," — protected against powerful water jets from any direction",[80,81,83],"h2",{"id":82},"applications","Applications",[56,85,86,87,92,93,97,98,102],{},"IP65 and IP66 are the standard ratings for outdoor industrial ",[88,89,91],"a",{"href":90},"\u002Fglossary\u002Fsonic-horn","sonic horn"," accessories — ",[88,94,96],{"href":95},"\u002Fglossary\u002Fsolenoid-valve","solenoid valves",", ",[88,99,101],{"href":100},"\u002Fglossary\u002Fcycle-controller-sequencer","cycle controllers",", local pressure indicators and isolators. The horn body itself, being a flow-through pneumatic device, is not normally IP-rated.",[80,104,106],{"id":105},"related-terms","Related terms",[66,108,109,115],{},[69,110,111],{},[88,112,114],{"href":113},"\u002Fglossary\u002Fnema-enclosure-rating","NEMA enclosure rating",[69,116,117],{},[88,118,119],{"href":90},"Sonic horn",{"title":121,"searchDepth":122,"depth":122,"links":123},"",2,[124,125],{"id":82,"depth":122,"text":83},{"id":105,"depth":122,"text":106},"materials-construction","IP66 and IP65 are IEC 60529 ingress-protection ratings indicating the degree to which an enclosure protects internal contents from dust and water. Both are dust-tight (the first digit \"6\"); they differ in water-protection level:","md",{},true,"\u002Fglossary\u002Fip66-ip65-enclosure-rating",[133,134],"nema-enclosure-rating","sonic-horn",{"title":136,"description":137},"IP66 and IP65 enclosure ratings — IEC 60529 ingress protection codes","IP66 and IP65 are IEC 60529 ingress-protection ratings indicating dust-tight construction and protection against water jets. Standard for outdoor industrial sonic-horn accessories.",[139],{"title":140,"url":141},"Wikipedia — IP code","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FIP_code","glossary\u002Fip66-ip65-enclosure-rating","IP66 and IP65 enclosure ratings","GfvxlvXxV5b1S2uOW1_cLCgDpKHSvQ_bXj4pdjtxenM",[146,269],{"id":147,"title":114,"aliases":148,"body":153,"category":126,"description":256,"extension":128,"meta":257,"navigation":130,"path":113,"relatedTerms":258,"seo":260,"sources":263,"stem":267,"term":114,"__hash__":268},"glossary\u002Fglossary\u002Fnema-enclosure-rating.md",[149,150,151,152],"NEMA 4","NEMA 4X","NEMA 12","NEMA rating",{"type":53,"value":154,"toc":252},[155,165,237,241,244,246],[56,156,157,160,161,164],{},[59,158,159],{},"NEMA enclosure ratings"," are the US National Electrical Manufacturers Association standards for electrical-enclosure protection, paralleling the ",[88,162,163],{"href":131},"IEC IP code"," used internationally. Common ratings encountered on sonic-horn accessories:",[166,167,168,183],"table",{},[169,170,171],"thead",{},[172,173,174,177,180],"tr",{},[175,176,152],"th",{},[175,178,179],{},"Description",[175,181,182],{},"IP equivalent",[184,185,186,196,206,217,227],"tbody",{},[172,187,188,191,194],{},[189,190,149],"td",{},[189,192,193],{},"Watertight; indoor \u002F outdoor",[189,195,49],{},[172,197,198,200,203],{},[189,199,150],{},[189,201,202],{},"Watertight + corrosion-resistant",[189,204,205],{},"IP66 +",[172,207,208,211,214],{},[189,209,210],{},"NEMA 7",[189,212,213],{},"Class I Div 1 hazardous-area",[189,215,216],{},"(no direct IP equivalent)",[172,218,219,222,225],{},[189,220,221],{},"NEMA 9",[189,223,224],{},"Class II Div 1 hazardous-area (dust)",[189,226,216],{},[172,228,229,231,234],{},[189,230,151],{},[189,232,233],{},"Industrial indoor, dust-tight",[189,235,236],{},"IP55",[80,238,240],{"id":239},"cross-referencing","Cross-referencing",[56,242,243],{},"US-market sonic-horn installations typically specify NEMA ratings; European-market installations use IP ratings. Vendors serving both markets cite the equivalent rating from the other standard for clarity.",[80,245,106],{"id":105},[66,247,248],{},[69,249,250],{},[88,251,47],{"href":131},{"title":121,"searchDepth":122,"depth":122,"links":253},[254,255],{"id":239,"depth":122,"text":240},{"id":105,"depth":122,"text":106},"NEMA enclosure ratings are the US National Electrical Manufacturers Association standards for electrical-enclosure protection, paralleling the IEC IP code used internationally. Common ratings encountered on sonic-horn accessories:",{},[259],"ip66-ip65-enclosure-rating",{"title":261,"description":262},"NEMA enclosure rating — US enclosure standard for electrical accessories","NEMA enclosure ratings are the US National Electrical Manufacturers Association standards for electrical enclosure protection. NEMA 4 \u002F 4X are common for outdoor sonic-horn accessories.",[264],{"title":265,"url":266},"Wikipedia — NEMA enclosure types","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNEMA_enclosure_types","glossary\u002Fnema-enclosure-rating","38KwxYP0YUmn4dFZE4En-7-p9ZEWC7PCo7fk4CsLa24",{"id":270,"title":119,"aliases":271,"body":275,"category":478,"description":479,"extension":128,"meta":480,"navigation":130,"path":90,"relatedTerms":481,"seo":488,"sources":491,"stem":501,"term":119,"__hash__":502},"glossary\u002Fglossary\u002Fsonic-horn.md",[272,273,274],"sonic horns","sonic cleaning horn","industrial sonic horn",{"type":53,"value":276,"toc":471},[277,309,313,320,324,386,390,427,431,439,441],[56,278,279,280,282,283,287,288,97,292,97,296,97,300,61,304,308],{},"A ",[59,281,91],{}," is a pneumatically-driven sound emitter that produces high-intensity, low-frequency sound waves — typically between 60 and 400 Hz at sound pressure levels of 140 to 180 dB — used to dislodge particulate fouling from inside industrial process equipment. Sonic horns are the most common form of ",[88,284,286],{"href":285},"\u002Fglossary\u002Facoustic-cleaner","acoustic cleaner"," and the default specification for cleaning ",[88,289,291],{"href":290},"\u002Fglossary\u002Felectrostatic-precipitator","ESPs",[88,293,295],{"href":294},"\u002Fglossary\u002Ffabric-filter","baghouses",[88,297,299],{"href":298},"\u002Fglossary\u002Fselective-catalytic-reduction","SCR catalysts",[88,301,303],{"href":302},"\u002Fglossary\u002Fsuperheater","boiler heat-transfer surfaces",[88,305,307],{"href":306},"\u002Fglossary\u002Fhopper","hoppers and silos",".",[80,310,312],{"id":311},"how-a-sonic-horn-works","How a sonic horn works",[56,314,315,316,319],{},"Compressed plant air admitted through a ",[88,317,318],{"href":95},"solenoid valve"," drives a metal diaphragm — typically titanium or 316 stainless — into resonant oscillation at the horn's fundamental frequency. The oscillating pressure field is amplified by an exponential bell horn and projected into the vessel as a near-spherical sound wave. Particulate already deposited on internal surfaces receives an oscillating acceleration that overcomes adhesion; loosened material is then carried out with the gas flow before it can sinter, bridge or bond. Because the cleaning is acoustic and non-contact, the horn can fire while the plant is online without tube erosion, refractory damage or thermal shock.",[80,321,323],{"id":322},"key-parameters","Key parameters",[166,325,326,336],{},[169,327,328],{},[172,329,330,333],{},[175,331,332],{},"Parameter",[175,334,335],{},"Typical range",[184,337,338,346,354,362,370,378],{},[172,339,340,343],{},[189,341,342],{},"Fundamental frequency",[189,344,345],{},"60–400 Hz",[172,347,348,351],{},[189,349,350],{},"Sound pressure level",[189,352,353],{},"140–180 dB",[172,355,356,359],{},[189,357,358],{},"Compressed-air consumption",[189,360,361],{},"8–14 Nm³\u002Fmin at 4–7 bar",[172,363,364,367],{},[189,365,366],{},"Operating temperature (with appropriate materials)",[189,368,369],{},"−40 °C to +500 °C",[172,371,372,375],{},[189,373,374],{},"Firing cycle",[189,376,377],{},"5–15 s burst, repeated every 3–15 minutes",[172,379,380,383],{},[189,381,382],{},"Mass",[189,384,385],{},"15–60 kg depending on horn size",[80,387,389],{"id":388},"frequency-selection","Frequency selection",[56,391,392,393,97,397,401,402,97,406,410,411,97,414,418,419,61,423,308],{},"Lower frequencies (60–125 Hz) project longer wavelengths and penetrate further into large open vessels — ",[88,394,396],{"href":395},"\u002Fglossary\u002Fpreheater-cyclone","preheater cyclones",[88,398,400],{"href":399},"\u002Fglossary\u002Frecovery-boiler","recovery-boiler superheaters",", large ",[88,403,405],{"href":404},"\u002Fglossary\u002Fesp-field-bus-section","ESP fields",[88,407,409],{"href":408},"\u002Fglossary\u002Fsilo","silos",". Higher frequencies (230–400 Hz) carry more energy per unit volume and suit finer dust loads in ",[88,412,413],{"href":294},"fabric-filter compartments",[88,415,417],{"href":416},"\u002Fglossary\u002Fhoneycomb-catalyst","catalyst layers"," and smaller hopper geometries. See ",[88,420,422],{"href":421},"\u002Fglossary\u002Flow-frequency-acoustic-cleaner","low-frequency acoustic cleaner",[88,424,426],{"href":425},"\u002Fglossary\u002Fhigh-frequency-acoustic-cleaner","high-frequency acoustic cleaner",[80,428,430],{"id":429},"sonic-horn-vs-steam-sootblower","Sonic horn vs steam sootblower",[56,432,433,434,438],{},"Sonic horns are increasingly specified alongside or in place of ",[88,435,437],{"href":436},"\u002Fglossary\u002Fsteam-sootblower","steam sootblowers"," because they consume no boiler-grade steam, cause no tube erosion, require almost no moving parts and can fire every few minutes without operator intervention. They are less effective on hard, fused slag than retractable steam lances, so on furnace waterwalls and high-temperature superheaters they typically complement rather than replace mechanical cleaning.",[80,440,106],{"id":105},[66,442,443,448,454,460,466],{},[69,444,445],{},[88,446,447],{"href":285},"Acoustic cleaner",[69,449,450],{},[88,451,453],{"href":452},"\u002Fglossary\u002Fsonic-sootblower","Sonic sootblower",[69,455,456],{},[88,457,459],{"href":458},"\u002Fglossary\u002Fbell-horn","Bell horn",[69,461,462],{},[88,463,465],{"href":464},"\u002Fglossary\u002Fdiaphragm-horn","Diaphragm horn",[69,467,468],{},[88,469,470],{"href":421},"Low-frequency acoustic cleaner",{"title":121,"searchDepth":122,"depth":122,"links":472},[473,474,475,476,477],{"id":311,"depth":122,"text":312},{"id":322,"depth":122,"text":323},{"id":388,"depth":122,"text":389},{"id":429,"depth":122,"text":430},{"id":105,"depth":122,"text":106},"core-technology","A sonic horn is a pneumatically-driven sound emitter that produces high-intensity, low-frequency sound waves — typically between 60 and 400 Hz at sound pressure levels of 140 to 180 dB — used to dislodge particulate fouling from inside industrial process equipment. Sonic horns are the most common form of acoustic cleaner and the default specification for cleaning ESPs, baghouses, SCR catalysts, boiler heat-transfer surfaces and hoppers and silos.",{},[482,483,484,485,486,487],"acoustic-cleaner","acoustic-cleaning-system","sonic-sootblower","bell-horn","diaphragm-horn","low-frequency-acoustic-cleaner",{"title":489,"description":490},"Sonic horn — definition, frequency, SPL and industrial applications","A sonic horn is a pneumatically-driven low-frequency sound emitter (typically 60–400 Hz at 140–180 dB SPL) used to dislodge particulate fouling from boilers, ESPs, baghouses and process vessels.",[492,495,498],{"title":493,"url":494},"Power Engineering — Sonic Horns: A User's Introduction","https:\u002F\u002Fwww.power-eng.com\u002Fcoal\u002Fsonic-horns-a-userrsquos-introduction\u002F",{"title":496,"url":497},"Power Engineering — Tuning in to Acoustic Cleaning","https:\u002F\u002Fwww.power-eng.com\u002Fcoal\u002Ftuning-in-to-acoustic-cleaning\u002F",{"title":499,"url":500},"Wikipedia — Sonic soot blowers","https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSonic_soot_blowers","glossary\u002Fsonic-horn","YzrhN0kKzqSaQo0wfn0rueNZ-V43mcg5zahqeWi3lnU",1782613747141]