匹配度隔爆外殼Enclosure can withstand an internal explosion and prevent propagation to surrounding atmosphere.增安型Additional measures to prevent sparks, arcs, and excessive temperatures on parts that do not normally produce them.本質安全型（a 級）Circuit cannot cause ignition even with two countable faults. Suitable for Zone 0.本質安全型（b 級）Circuit cannot cause ignition with one countable fault. Suitable for Zone 1.本質安全型（c 級）Circuit cannot cause ignition under normal operation. Suitable for Zone 2.充氣外殼Enclosure maintained at positive pressure with clean air or inert gas to prevent entry of explosive atmosphere.Pressurized (type px)Pressurized to reduce Zone 1 to non-hazardous inside enclosure.Pressurized (type py)Pressurized to reduce Zone 1 to Zone 2 inside enclosure.Pressurized (type pz)Pressurized to reduce Zone 2 to non-hazardous inside enclosure.封裝型Components encapsulated in compound to prevent contact with explosive atmosphere.Encapsulation (level a)Two faults tolerated. Zone 0 suitable.Encapsulation (level b)One fault tolerated. Zone 1 suitable.Non-sparkingEquipment not capable of producing arcs or sparks in normal operation. Zone 2 only.Sparking contacts in enclosureContacts enclosed. Zone 2 only.Restricted breathing enclosureEnclosure restricts gas entry. Zone 2 only.油浸型Parts submerged in oil preventing contact with atmosphere.Powder/sand fillingEnclosure filled with powder to quench any internal arc.外殼保護型（粉塵）Dust-tight or dust-protected enclosure for combustible dust atmospheres.Enclosure (dust, level a)Zone 20 suitable.Enclosure (dust, level b)Zone 21 suitable.Enclosure (dust, level c)Zone 22 suitable.Group I — MiningFiredamp (methane in coal mines)Group IIAPropane, butane, acetone, ammonia, etc. Least stringent surface group.Group IIBEthylene, hydrogen sulfide, diethyl ether, etc.Group IICHydrogen, acetylene, carbon disulfide. Most stringent surface group.Group IIIA — Combustible flyingsTextile fibers, wood particlesGroup IIIB — Non-conductive dustGrain dust, flour, wood dustGroup IIIC — Conductive dustMetal dust (aluminum, magnesium)0、1、2 區1、2 區2 區Zone 20, 21, 22Zone 21, 22Zone 22
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Nikolai Shelkovenko
Nikolai Shelkovenko是一名振動分析工程師，也是Vibromera的創辦人兼執行長。
15年多來，他一直在現場——而非在試驗台上——為旋轉設備進行動平衡校正：粉碎機、工業風機、破碎機、離心機、軸與主軸。正是這些實際工作催生了Balanset系列儀器——它們被設計為一種專業人員可以隨身攜帶到機器旁、在現場獨立使用的工具，而非實驗室設備。
Vibromera成立於2017年，自2023年起總部設於葡萄牙波爾圖。Balanset系列產品的研發、組裝與支援均在此完成。旗艦產品是Balanset-1A，一款用於單平面及雙平面動平衡校正與振動診斷的可攜式分析儀。
Nikolai親自參與客戶支援工作，處理各種棘手的動平衡校正案例，並參與軟體開發。他以任何語言為全球客戶提供服務。
