The liquid level transmitter represents an extension and evolution of pressure transmitter technology. Based on the principle that the pressure generated by liquids of varying specific gravities at different heights maintains a linear relationship, it enables the accurate measurement and transmission of the volume, liquid level, and weight of substances such as water, oil, and viscous pastes.
The hydraulic bolt tensioner-commonly referred to simply as a hydraulic tensioner-performs both bolt tightening and removal functions and is widely applicable across industries such as metallurgy and mining, petrochemicals, shipbuilding, and locomotive manufacturing. Utilizing hydraulic power supplied by a hydraulic pump, the device stretches a bolt by leveraging the material's permissible elastic range, thereby achieving the objective of either tightening or loosening the bolt. Furthermore, it can serve as a hydraulic device for applying axial force in interference-fit connections, facilitating press-fit installations. Particularly in work environments characterized by severe contamination or limited spatial constraints, the use of a hydraulic tensioning device is virtually irreplaceable by any other tool; it stands as an ideal piece of process equipment for the assembly of large- and medium-scale machinery as well as for equipment maintenance.