Czech Metrology Czech Metrology Institute Institute Laboratory Laboratory of of Fundamental Fundamental Metrology Metrology Force Force and and Torque Torque Department Department Petr Ka Petr Ka š š par par - - CMI CMI
Czech MetrologyCzech Metrology InstituteInstituteLaboratoryLaboratory ofof FundamentalFundamental MetrologyMetrology
ForceForce andand TorqueTorque DepartmentDepartment
Petr KaPetr Kaššpar par -- CMICMI
Force and Torque Department
• Maintenance of national and reference standards for quantities force and torque
• Building of standards• Comparisons for industry metrology• Education for industry metrology
After flood in 2002
• New laboratory over 3 floors• Ferroconcrete base to the ground through
building• 3 new force standards• 1 new torque standard• 1 rebuild force standard (bigger range)• 1 rebuild torque standard
Force standards
• ESZ 500 N in progress• ESZ 3 kN national standard• ESZ 20 kN reference standard• ESZ 200 kN national standard• ESZ 1 MN national standard
ESZ 500 N
• Nowadays in progress• Deadweight machine
ESZ 3 kN
• Deadweight machine• Up to 3 kN• Uncertainty 5.10-5
ESZ 20 kN• Deadweight machine• Up to 20 kN• Uncertainty 5.10-5
ESZ 200 kN
• Lever machine• Up to 200 kN• Uncertainty 2.10-4
ESZ 1 MN
• Lever machine• Up to 1 MN
(deadweight up to 50 kN)
• Uncertainty 2.10-4
Torque standards
• EZMS 100 N.m in progress now• EZMS 1 kN.m national standard• Reference torque wrenches:
10 N.m, 100 N.m and 1 kN.m• Reference torque transducers
EZMS 100 N.m
• Nowadays in progress• Deadweight machine
EZMS 1 kN.m
• Deadweight machine• Up to 1 kN.m• Uncertainty 4.10-4
Stand for Torque Measurements