The elevator traction machine, often referred to as the elevator motor or main drive unit, serves as the core power source for an elevator system. It is responsible for generating and transferring the mechanical energy needed to move the elevator car up and down within the shaft. This essential component typically includes several key parts: an electric motor, a brake assembly, a coupling, a gear reduction system, a traction sheave (or pulley), a sturdy frame, guide wheels, and sometimes a hand-operated wheel for emergency use. The guide wheels are usually mounted on the load-bearing beam that supports the entire structure, ensuring smooth movement of the elevator ropes. In some models, the handwheel is attached directly to the motor shaft and stored near the control panel, ready to be used in case of a power failure or maintenance requirement. Understanding how this machine operates is crucial for both installation and troubleshooting, making it one of the most important elements in any elevator system.

ISO Standard Mass Flow Meter

Zhejiang Sealand Technology Co., Ltd. is a trustworthy manufacturer of Mass Flow Meter Coriolis, Flow Meter Coriolis, Mass Flowmeter Coriolis, Mass Meter Coriolis, Meter Coriolis, Flowmeter Coriolis, ISO/ IEC 17025 standard.

Sealand meter is certified by Zhejiang Institute of Metrology. To get such certificate, Sealand has to send all models to Zhejiang Institute of Metrology and all models are tested in their calibration lab. The lab is an ISO/IEC 17025:2005 standard lab approved by CNAS (China National Accreditation Service for Conformity Assessment). CNAS is a member of ILAC (International Laboratory Accreditation Cooperation).