JB/T 51088-1999

Manufacturers and quality inspection agencies of tractors and internal combustion engines use this standard to grade and evaluate the quality of spring tube thermometers. It ensures the reliability and consistency of thermometer performance by specifying detailed test methods and inspection rules. This standard is important for guaranteeing accurate temperature monitoring in tractors and engines and for improving product quality levels.

拖拉机、内燃机制造商和质检机构使用本标准来对弹簧管式温度表进行质量分等和等级评定。它通过规定详细的试验方法和检验规则，确保温度表产品的性能可靠性和一致性。该标准对于保障拖拉机、内燃机温度监测的准确性、提升产品质量水平具有重要意义。

This standard specifies the product quality grading, test methods and inspection rules for spring tube thermometers used in tractors and internal combustion engines. It classifies thermometers into two grades: qualified product and first-class product, and details multiple quality grade indicators including structural dimensions, appearance, paint coating, plating, pointer deflection smoothness, basic error, indication lag, heating and quenching, overheating, temperature influence, vibration resistance, dustproofing, waterproofing, durability, alternating damp heat, and salt spray resistance. The test methods section defines inspection items and procedures, while the inspection rules section adopts the single normal sampling plan of GB/T 2828, providing defect classification and AQL values. This standard applies to the quality testing and grade evaluation of pressure thermometers for tractors and internal combustion engines.

本标准规定了拖拉机、内燃机用弹簧管式温度表的产品质量分等、试验方法和检验规则。标准将温度表分为合格品和一等品两个等级，并详细列出了结构尺寸、外观、漆层、镀层、指针偏转平稳性、基本误差、指示滞后、加热急冷、过热、温度影响、耐振动、防尘、防水、耐久性、交变湿热和耐盐雾等多项质量等级指标。试验方法部分规定了检测项目和程序，检验规则部分采用GB/T 2828的一次正常抽样方案，并给出了不合格分类和AQL值。该标准适用于拖拉机、内燃机用压力式温度表的质量检测和等级评定。