Introduction to the National Defense High Torque Primary Measurement Station (Torque Calibration/Testing Laboratory):

Mainly engaged in torque measurement testing research and measurement transmission work. Torque Station is a first level metrological technology institution licensed by the State Administration of Science and Industry for National Defense, and also has multiple military and civilian qualifications such as the Special Verification Authorization for Torque Measurement by the General Administration of Quality Inspection and Quarantine of China (the only authorized unit for national torque measurement verification in the range range of 5kNm or above).

The torque station provides comprehensive and lifelong torque value transmission services for equipment development, production, testing, and use units in defense technology industry, military, and national economic construction, ensuring the accuracy and reliability of torque values in defense technology industry systems, national economic construction, and the People's Liberation Army of China.

The torque station has a torque (multi parameter) research and development center of over 400 square meters and a torque (multi parameter) measurement building of 1500 square meters. The torque calibration/testing laboratory is a leading and internationally renowned professional torque laboratory in China, and is also the largest professional laboratory with strong torque measurement calibration, testing, and research and development capabilities in the world today.

Independently developed and established the highest standard for national defense torque preservation, combined with various on-site calibration and testing systems, we have formed a multi range torque measurement capability and strong engineering research and development application capability characterized by ultra large torque, large torque, small torque, small torque, dynamic torque, and on-site torque measurement and calibration.

The technical level of micro torque, ultra large torque, dynamic torque, and on-site torque measurement and calibration equipment with complete intellectual property rights in China has reached an international leading level. At the same time, the technical level of high-precision torque standard devices in the conventional range range has reached the same international highest level as the German Institute of Technical Physics (PTB).

资质：

Service items:

Calibration: torque wrench, torque wrench calibration instrument, torque speed measurement device, standard torque instrument, torque standard machine, static torque measurement instrument, etc.

Testing: torque wrench, torque meter, torque and speed sensor, various testing platforms for ship main engine and power system, etc.

Non standard testing: Electric, pneumatic, and hydraulic bolt torque tightening testing; Various types of ship torque, power testing, and torsional vibration testing; Various types of torque testing machines; Exploration equipment, oil drilling, wind power, hydraulic motors, and various pump transmission torque and power testing; On site testing of stress and strain.

Training and technical consulting services: basic knowledge training on measurement, training on torque measurement related standards and specifications, uncertainty assessment training, training on torque standard device standardization work, operation and maintenance training on torque products, organization of torque measurement technology exchange activities or meetings, torque measurement technology consulting services, etc.

Calibration capability:

检测能力：

特色计量能力：

1、 大扭矩/超大扭矩（5kNm以上量程段的国家扭矩量传检定唯一授权单位）

200kNm 扭矩标准装置

测量范围:  2kNm~200kNm

不确定度:  U_rel= 1×10^-4（k=2）

50kNm扭矩标准装置

测量范围:  50Nm~50kNm

不确定度: U_rel=5×10^-4（k=3）

2、  小扭矩/微小扭矩（可为航空、航天、船舶等武器装备惯导系统关键电磁元器件力矩器、角度传感器、磁浮轴承、堵转电机、陀螺马达等的静态、动态扭矩提供计量服务）

0.5mNm~10Nm  气浮式扭矩标准装置

测量范围:  0.5mNm~10Nm

不确定度:  U_rel=0.05% ~ 0.01% (k = 2)

微小扭矩校准装置

测量范围: (0.5~10)mNm

分辨力：10^-7Nm

测量不确定度: U = 0.1% FS(k = 2)

3、  动态扭矩（可提供标准正弦扭矩与负阶跃扭矩，校准扭矩传感器的幅值准确性与时间常数，实现动态扭矩测量准确性评估，主要应用于船舶联合动力系统的动力整定以及船级机桨的匹配）

50Nm 动态扭矩试验装置

不确定度:  U=5%（k=2）

正弦动态扭矩测试装置

测量范围：-5Nm～5Nm

频率：1Hz～50Hz

测量不确定度：U=5% （k=2）

常规计量能力：

1、扭矩标准装置

测量范围:  0.282Nm~30kNm

不确定度:  U_rel= 3×10^-4 ~ 1×10^-3（k=2） 

 测量范围:  2Nm~200Nm/20Nm~5kNm

不确定度:  U_rel =5×10^-5（k=2）

2、标准扭矩仪/高准确度扭矩传感器及测量仪表

测量范围: 10mNm~50kNm/0.02Nm~50kNm

不确定度 : U = 0.1% (k = 2)/U = 0.03% (k = 2)