Overview
The explosion-proof portable electronic balance is a specialized weighing device engineered for use in hazardous environments where flammable gases, vapors, or dust may ignite. Unlike standard balances, it incorporates intrinsic safety mechanisms to prevent sparks or excessive heat. These devices are critical in industries such as petrochemicals, pharmaceuticals, and mining, where accurate measurements must coexist with stringent safety protocols. Modern models often include features like rechargeable batteries, touchless operation, and data logging to enhance usability in challenging conditions. Compliance with international standards (e.g., ATEX, IECEx) ensures reliability in classified hazardous zones (Zone 0/1 or Zone 20/21 for dust).
Structure and Working Principle
The balance typically consists of a robust housing made from materials like stainless steel or explosion-proof polymers, which contain any internal sparks. The load cell and electronics are isolated to prevent energy discharge. A key component is the strain-gauge load cell, which converts force into an electrical signal while operating below safe energy thresholds. Power management is carefully controlled, with circuits designed to limit current and voltage to non-incendiary levels. Some models use piezoelectric sensors for higher precision in portable designs. The display and controls are often sealed or membrane-based to prevent ingress of hazardous substances.
Key Features
1. **Intrinsic Safety**: Certified for use in explosive atmospheres without risk of ignition. 2. **Portability**: Lightweight design with battery operation for field use. 3. **High Precision**: Typical readability from 0.001g to 0.1g, depending on capacity. 4. **Durability**: IP65 or higher rating for dust/water resistance. 5. **Data Connectivity**: Optional Bluetooth or USB for data transfer in safe areas. Advanced models may include anti-static coatings, magnetic damping systems, or modular designs for easy maintenance. The balance must be marked with its zone classification (e.g., II 1G Ex ia IIC T4 for gas environments).
Application Areas
Primary applications include: 1. **Oil & Gas**: Weighing catalysts or samples in refineries. 2. **Pharmaceuticals**: Formulating drugs in solvent-rich environments. 3. **Mining**: Measuring explosive precursors like ammonium nitrate. 4. **Chemical Manufacturing**: Handling flammable powders or liquids. In laboratories, these balances are used for R&D involving volatile compounds. Portability is valued for on-site inspections or emergency response teams. Specialized versions serve military or aerospace sectors for fuel or propellant handling.
Maintenance and Precautions
Regular calibration (every 3–6 months) is essential to maintain accuracy, using certified weights. Clean the balance with non-flammable solvents, avoiding abrasive materials that could damage the housing. Battery compartments must be sealed after replacement to preserve explosion-proof integrity. Never modify or repair the device in hazardous areas—return it to authorized service centers. Store the balance in a dry, non-hazardous environment when not in use. Always check for damage to cables or seals before operation.
B2B Procurement Guide
When sourcing explosion-proof balances, prioritize suppliers with ISO 9001 certification and ATEX/IECEx documentation. Key considerations: 1. **Certification**: Match the device to your facility’s zone classification. 2. **Capacity**: Ranges from 100g to 15kg; select based on typical sample sizes. 3. **Precision**: Higher readability (e.g., 0.001g) costs more but is vital for lab use. Request test reports and ensure the manufacturer provides traceable calibration certificates. For bulk orders, negotiate service agreements covering calibration and repairs. Lead times can extend to 8–12 weeks for custom configurations.
Related Manufacturers
- 主营：液体自动灌装线、电子化学品灌装机、自动重量选别机、防爆电子秤、防爆称重模块、防爆称重仪表、防爆电子天平、X射线异物检测机、化学试剂灌装机、联贸涂料灌装机、联贸X射线异物检测机、联贸电子秤、食品X光异物检测机、重量选别机
- 主营：口罩防护服、注射针、鲁尔圆锥、纺织类检测仪器、测定仪、传感器、对色箱、硬度计、测试仪、试验箱、百格刮擦、疲劳强度测试仪、织物燃烧、缝合针、试验仪、刮擦仪
- 主营：混凝土振动台、水泥试验磨、磨耗机、砌墙砖搅拌机、塑料试模、洛杉矶磨耗试验机、混凝土搅拌机、立式砂浆搅拌机、试块架、试验仪器
- 主营：酸度计、生化培养箱、超声波清洗器、电子天平、粘度计、水分仪、离子计、滴定仪、培养箱、水浴锅、搅拌器、浊度计、溶解氧、电导率仪
- 主营：污染物、分析仪、采样器、电子天平、监测仪、声级计、探测仪、检测器、测汞仪、检测仪、沥青烟、报警器、风速仪、直读仪、测试仪、切割器、测定仪、沸水浴、传感器、安全柜、检漏仪、报警仪、指数仪、测油仪、真空泵、便携泵吸
- 主营：电耙子、煤矿井下用隔爆装置、泥浆泵、密闭门、全液压钻机、高倍数泡沫灭火装置、洒水降尘装置、阻化泵、阻燃调节风窗、检力器、流量计、氧气呼吸器、乳化液泵、钻机配件、矿用电缆、破拆工具、矿用电池、旧枕木、风筒、氧气充填泵、风机、避难硐室、无压风门、氢氧化钙检验仪器、多参数检测仪
- 主营：测试机、仪测试、检验机、电子天平、测验仪、护目镜、卫生巾、astmf2992、测定机、耐磨仪、强力仪、nbs橡胶、织物胀、卫生纸、老化箱、检测仪、灼热丝、试验机、试验仪、纸尿裤、能检验、测定仪、呼吸气密、测试温度、口罩耳带、性测试仪
- 主营：单人防护装备包、个人防护包、水污染监测设备、移动执法装备、移动执法包、移动源执法设备、红外夜视仪、热成像仪、便携式超声波明渠流量、油烟检测仪、VOC检测仪、qdf-6风速仪、恒流大气采样器、在用车尾气分析仪、不透光烟度计、车用氮氧化物分析仪、OBD检测仪、FID检测仪、便携式水质自动采样器、水质快检试剂包、多普勒流量计、转子流速仪、红外气体泄漏检测仪、紫外线强度仪
- 主营：打印秤、电子地磅、小型磅秤、电子天平称、电子天平秤、电子台秤、电子称台、重量变送器、计重电子秤、精密电子秤、防水电子计数秤、高精度称重模块、称重传感器、测力传感器、扭矩传感器、配料秤、称重模块、波纹管传感器、无人智能称重货架、皮带检重秤、金属检测机、失重秤、喂料机、应变片称重传感器、轮式称重传感器
- 主营：分析仪、采样器、检测仪、千分之一电子天平、监测仪、照明灯、氟化物、高压气源、气体检测、在线监测、细菌培养、微控制器、监测设备、固定污染源、液液萃取仪、生物安全柜、大气污染物、明渠流量计、红外测油仪、测定重量法、气体报警器、气体探测器、大气采样仪、恒温恒湿系统、双重粉尘过滤、大流量采样泵
- 主营：流速流量仪、大气采样器、黑烟识别器、气体、采样器、检测仪、林格曼黑度仪、数采仪、油气回收检测仪、生物安全柜、天平、土壤、β射线扬尘、风速仪、测温仪、测距仪、辐照计、辐射仪、在线自动水质采样器、油烟检测仪、烟尘烟气分析仪、恒温恒湿称重系统、噪声计、粉尘仪、重金属多参数水质检测仪
- 主营：油气回收检测仪、便携式活性炭碘值检测、烟花爆竹探测器、移动源执法监测设备、便携式明渠流量计、单人防护装备、个人剂量报警仪、氢火焰离子化检器、水质快检试剂包、手持热电风速仪、水样采样设备、便携式噪声检测仪、多参数气体检测仪、热成像泄漏检测仪、土壤重金属检测仪、水质指纹预警溯源仪、便携式烟气分析仪、便携式恶臭检测仪、便携式油烟检测仪、林格曼黑度检测仪、消耗臭氧层物质检测仪、应急防护包、辐射防护包、个人防护包、油气回收多参数检测仪
- 主营：培养箱、分析仪、检测仪、报警仪、测量仪、酸度计、风速仪、蓝牙、称重系统、室内检测仪器、甲醛检测、测定仪、声校准器、酸碱浓度计、流量计、采样器、消解器、机器人、振动检测分析仪、测试仪、环保第三方检测、环境检测、综合采样器、生物安全柜、浊度仪
- 主营：分析天平、精密天平、温湿度表、电子天平、大量程电子天平、精密电子天平、铂金坩埚、纯水机、水分测定仪、红外水分仪、砝码、粘度计、静水力学天平、酸度计、托盘天平、磁力搅拌器、振荡器、液体比重天平、学生天平、机械天平、镍坩埚、银坩埚、密度天平、十万分之一天平、交直流两用天平
- 主营：黑度仪、场强仪、检测仪、风速仪、检测箱、外置泵、电磁兼容、自动采样器、流速监测仪、紫外辐照仪、水质监测仪、黑烟识别器、黑球指数仪、水质采样器、水质速测箱、风速测量仪、甲醛测试仪、明渠流量计、孔口流量计、微电脑控制器、电磁场测量仪、微生物采样器、手持式抓拍仪、恒温恒湿设备、气溶胶采样器