匹配度防爆外壳Enclosure can withstand an internal explosion and prevent propagation to surrounding atmosphere.安全性提高Additional measures to prevent sparks, arcs, and excessive temperatures on parts that do not normally produce them.本质安全（A级）Circuit cannot cause ignition even with two countable faults. Suitable for Zone 0.本质安全（B级）Circuit cannot cause ignition with one countable fault. Suitable for Zone 1.本质安全（C级）Circuit cannot cause ignition under normal operation. Suitable for Zone 2.加压外壳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.封装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Parts submerged in oil preventing contact with atmosphere.Powder/sand fillingEnclosure filled with powder to quench any internal arc.外壳防护（防尘）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区、1区、2区1区、2区2区Zone 20, 21, 22Zone 21, 22Zone 22
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Nikolai Shelkovenko
Nikolai Shelkovenko是一名振动分析工程师，也是Vibromera的创始人兼首席执行官。
15年多来，他一直在现场——而非在试验台上——为旋转设备进行平衡：粉碎机、工业风机、破碎机、离心机、轴和主轴。正是这些实际工作催生了Balanset系列仪器——它们被设计为一种专业人员可以随身携带到机器旁、在现场独立使用的工具，而非实验室设备。
Vibromera成立于2017年，自2023年起总部设于葡萄牙波尔图。Balanset系列产品的研发、组装与支持均在此完成。旗舰产品是Balanset-1A，一款用于单平面及双平面平衡和振动诊断的便携式分析仪。
Nikolai亲自参与客户支持工作，处理各种棘手的平衡案例，并参与软件开发。他以任何语言为全球客户提供服务。
