Overview
Handle-shaped calibration weights are specialized tools designed to ensure the accuracy of weighing devices. Their distinctive handle allows for safe and contamination-free handling, minimizing errors caused by fingerprints or environmental factors. Commonly used in laboratories, manufacturing, and regulatory testing, these weights adhere to international standards such as OIML R111 or ASTM E617. These weights are categorized by precision classes (e.g., Class F1, M1), which determine their permissible error margins. The handle design is particularly useful for frequent calibration tasks, reducing wear and maintaining long-term accuracy. Industries like pharmaceuticals and food processing rely on them for compliance with stringent quality controls.
Structure and Working Principle
A handle-shaped calibration weight consists of a precisely machined mass block and an integrated handle, often made from the same material to ensure uniform density. The handle is typically looped or knurled to provide a secure grip. The weight’s mass is certified to traceable standards, ensuring it delivers consistent force when placed on a scale. Calibration works by comparing the scale’s reading to the known mass of the weight. Deviations indicate measurement drift, prompting adjustments. The handle design minimizes contact with the weighing surface, reducing contamination risks. High-grade versions may include magnetic damping to stabilize readings in dynamic environments.
Key Features
Durability is a hallmark of handle-shaped calibration weights, achieved through materials like stainless steel or brass that resist oxidation and wear. Their ergonomic handles enable quick placement and removal, streamlining repetitive calibration processes. Some models feature serialized identification for traceability in regulated industries. Precision is another critical attribute, with tolerances as tight as ±0.0005% for Class E1 weights. The handle design also aids in cleanliness, crucial for applications like pharmaceutical testing where contamination could skew results. Optional features include non-magnetic coatings or adjustable masses for field calibration.
Application Areas
These weights are indispensable in metrology labs, where they calibrate analytical balances for research or quality assurance. Industrial settings use them to verify platform scales in logistics or production lines, ensuring consistent product weights. Regulatory bodies employ them to inspect commercial scales for trade compliance. In food processing, handle-shaped weights help maintain portion control equipment. Their corrosion resistance makes them suitable for humid environments like seafood packaging. Specialty versions are used in aerospace to test load cells or in educational labs to teach measurement principles.
Maintenance and Precautions
Regular cleaning with a lint-free cloth and alcohol preserves the weight’s surface integrity. Store in a dedicated case to prevent scratches or dust accumulation. Avoid touching the mass block directly; always use the handle to prevent oil transfer from skin. Periodic recalibration (annually or biannually) is recommended, especially after accidental drops. Environmental factors like temperature swings can affect performance, so stabilize weights before use. For magnetic-sensitive applications, verify the material’s non-magnetic properties.
B2B Procurement Guide
When sourcing handle-shaped calibration weights, prioritize suppliers with ISO/IEC 17025 accreditation for certified products. Specify the required precision class and material based on your industry’s standards—e.g., stainless steel for corrosive environments. Request documentation including calibration certificates and material test reports. Bulk purchases may qualify for discounts, but ensure consistent manufacturing batches. Lead times can vary for custom markings or weights outside standard ranges. Consider total cost of ownership, factoring in recalibration services offered by the vendor.
Related Manufacturers
- 主营：玻璃钢防眩板、玻璃钢花盆、玻璃钢花箱、高架桥花盆、市政花盆、玻璃钢花槽、玻璃钢电缆槽、玻璃钢电缆桥架、玻璃钢型材、玻璃钢檩条、玻璃钢标志桩、玻璃钢警示牌、玻璃钢化粪池、玻璃钢隔油池、玻璃钢轮廓标、复合材料花盆、户外花盆、玻璃钢产品定制加工、玻璃钢角钢、柱帽式轮廓标、玻璃钢道口桩、SMC电缆槽、玻璃钢电缆槽盒、玻璃钢污水池盖板、玻璃钢电缆沟盖板
- 主营：塑料吨桶、化工桶、防静电吨桶、塑料瓶、塑料桶、吨桶、圆桶、方桶、大口桶、抓把桶、精细瓶、加仑桶、香精桶、工字桶、兰角口桶、美坚桶、赛文桶、闭口桶、肠衣桶、铁卡子桶、双环桶、角口桶、斜把桶、防盗桶、扁桶
- 主营：真空袋、铝箔袋、高温灭菌袋、带吸嘴小米袋、冷冻袋、异形袋、吸嘴袋、八边封袋、自立袋、自封袋、背封袋、卷膜
- 主营：塑料桶、垃圾桶、机油桶、带盖塑料桶、涂料桶、润滑油桶、食品塑料桶、加厚塑料桶、化工塑料桶、化工桶塑料桶、白色塑料桶、透明塑料桶、食品级塑料、密封塑料桶、25升塑料桶、工业塑料桶、涂料塑料桶、圆形塑料桶、双层塑料桶、手提塑料桶、塑料水桶、润滑剂塑料桶
- 主营：塑料桶
- 主营：透水砖
- 主营：化工桶、不锈钢桶
- 主营：塑料托盘、吹塑托盘、防渗漏托盘、塑料提手方桶、卡板箱、塑料垫板、鸭苗筐、工具盒、防撞桶、豆虫筐、服装筐、专用筐、晾晒盘、隔离墩、塑料桶、垃圾桶、五金盒、冷冻盘、塑料筐、防潮板、啤酒筐、料服装、育苗盘、封闭箱、九角网格托盘、川子网格托盘
- 主营：镀锌钢格栅板
- 主营：EPE珍珠棉、防静电EPE珍珠棉、气泡膜卷材、防静电气泡膜、集装袋、太空包、吨包袋、太空袋、软托盘、中空板卷材、片材、箱子、异型材、万通板、吸塑包装、吸塑托盘
- 主营：不锈钢砝码、铸铁砝码、钢包砝码、20kg锁形法码、单钩砝码、双钩砝码、配重砝码、增坨砝码、电梯砝码、镀铬砝码、电子地磅、不锈钢地磅、防水秤、防爆秤、液化气罐装秤、汽车衡、滚筒秤、自动检重秤、电子天平、叉车秤、钢瓶秤、电子吊秤、称重模块、电子台秤、无人值守称重系统、地磅自助过磅系统
- 主营：梨膏瓶、枸杞罐、储存罐、剁椒瓶、泡菜瓶、罐头瓶、麻油瓶、腐乳瓶、精油瓶、组培瓶、包装瓶、白酒瓶、果酒瓶、膏滋瓶、走珠瓶、酱菜瓶、果酱瓶、储物罐、酸奶杯、药粉瓶、培养瓶、香油瓶、酵素瓶、药膏瓶、豆腐瓶
- 主营：塑料桶、螺旋桶、开口桶、食品级的桶、化工桶、家用塑料小水桶、发酵塑料桶、奶茶桶、塑料圆桶、5l塑料桶、水桶、方形塑料桶、食品级塑料桶、涂料桶、机油桶、海蜇桶、龙虾桶、化肥桶、乳胶漆桶、包装桶、肥料桶、种子包装桶、酒酿包装桶、透明塑料桶
- 主营：塑料桶、塑料瓶、化工桶、试剂瓶、涂料桶、小龙虾桶、化肥桶、农药瓶、肥料桶、食品级桶、耐酸碱堆码桶、废液桶、机油桶、农资桶、水溶肥桶、透明塑料桶、25L塑料桶、高阻隔瓶、固体瓶、PP桶、PE瓶、洗护瓶、工业用桶、圆瓶、堆码桶
- 主营：食品袋、拉链袋、八边封袋、铝箔袋、异形袋、三边封袋、自动包装卷膜、pe袋、咖啡袋、槟榔袋、透明袋、自立袋、牛皮纸袋、平底袋、风琴袋、透明窗口袋、数据线包装袋、快递袋、吸嘴袋、宠物食品袋、镭射膜袋、激光虚线袋、拉链自立复合袋、直立自立复合袋、风琴底直立复合袋