BC9a饱和标准电池/BC-9a
BC9a饱和标准电池产品介绍
BC9a饱和标准电池是一种高精度化学电池，采用饱和硫酸镉溶液设计，具有优异的电动势稳定性和复现性，广泛用作电压参考标准。该电池在20℃环境下的电动势标称值为1.01855～1.01868V，准确度达到0.005%，年变化不超过50μV，适用于实验室精密测量和工业校准场景。产品采用便携式设计（外形尺寸98×98×128mm），结构坚固可靠，能够承受一定程度的倾斜和震动，方便现场使用和运输。其工作原理基于韦斯顿电池的化学体系，通过严格控制电解液浓度和电极材料纯度来保证输出稳定性。124
BC-9a Saturated Standard Cell Product Introduction
The BC-9a saturated standard cell is a precision electrochemical device designed for voltage reference applications, featuring stable electromotive force (EMF) output between 1.01855 to 1.01868V at 20℃ with 0.005% accuracy. This portable unit (98×98×128mm) employs saturated cadmium sulfate electrolyte solution to maintain long-term stability, showing annual EMF variation below 50μV. Its robust construction allows safe transportation and operation in laboratory or industrial environments. The cell follows Weston cell principle with optimized electrode materials and hermetic sealing to ensure consistent performance. Suitable for potentiometers, digital voltmeters and recording instruments, it serves as reliable voltage reference under 1-60℃ ambient temperature with humidity below 80%.7812
技术特性与使用说明
该产品采用特殊工艺处理的汞镉合金电极和晶体化电解液体系，温度系数经过精确补偿，在10-40℃工作范围内可通过公式Et=E20-[α(t-20)+β(t-20)²-γ(t-20)³]×10⁻⁶V计算温度修正值。内部电阻约1000Ω，最大允许瞬态电流1μA。使用时应避免突然的温度变化和阳光直射，运输后需在标准温度下稳定30分钟。不同于传统设计，BC9a采用新型环保结构，减少了汞用量并强化了密封性，既保持经典标准电池的稳定性又符合现代环保要求。81117
Technical Features & Operating Guide
This cell incorporates temperature-compensated mercury-cadmium alloy electrodes with crystalline electrolyte system, providing calculable EMF correction via specified polynomial equation within 10-40℃ range. With 1000Ω internal resistance and 1μA max transient current tolerance, it requires protection against thermal shock and direct sunlight. The environmentally improved design reduces hazardous materials while maintaining hermetical sealing performance. After transportation, 30-minute stabilization at 20℃ is recommended. The dual-terminal configuration permits series/parallel connections for different voltage requirements, and its insulated housing (5000MΩ isolation) ensures safety in metrological applications.121619
应用领域与维护建议
BC9a型电池广泛应用于计量机构、高等院校和科研单位的电动势工作标准，可与各类电位差计、高精度数字表及自动记录仪配套使用。建议存放于温度波动小的环境中，定期清洁电极端子，使用高阻抗（>10MΩ）测量设备。当电池闲置超过三个月时，应进行充放电维护以保持电解液活性。产品寿命通常超过5年，通过正规检定可延长服役周期。配套提供的技术参数卡片需妥善保存，便于后续量值溯源和温度修正计算。4914
Applications & Maintenance
Ideal for metrology institutes, industrial labs and educational facilities, this cell pairs with precision instruments like differential potentiometers and data loggers. Storage in <80% humidity with minimal temperature variation is advised. Terminal oxidation should be cleaned periodically using proper methods. For prolonged storage, quarterly charge-discharge cycles help maintain electrolyte activity. The 5+ years service life can be extended through regular verification. Included calibration data sheet provides essential parameters for traceability and temperature compensation throughout product lifecycle.131821
BC9a饱和标准电池
的详细介绍BC9a饱和标准电池/BC-9a
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序号
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型号
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产 品 名 称
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测 量 范 围
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准确度
等级
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出厂价￥
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9-1
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BC9a
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饱和标准电池
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1.01855～1.01868
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0.005
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240
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9-2
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BC2
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饱和标准电池
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1.01855～1.01868
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0.005
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320
|
|
9-3
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BC3
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饱和标准电池
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1.01855～1.01868
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0.005
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320
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9-4
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BC7-1
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便携式为饱和标准电池
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1.01855～1.01868
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0.01
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120
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9-5
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BC5-2
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便携式为饱和标准电池
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1.01880～1.01930
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0.01
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117
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9-6
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BC24
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便携式不饱和标准电池
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1.01880～1.01930
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0.01
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105
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9-7
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BC11
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高精度电池组
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1.01890～1.018680
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0.0005
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4800
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9-8
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BC11a
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高精度基准电池组(10只装)
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1.01890～1.018680
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0.0005
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8600
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