The PIAB Crane Weigher is a high accuracy all- weather instrument for force measurement in aggressive environment. The PIAB Crane Weigher is suitable both for in- and outdoor usage. Supply your PIAB Crane Weigher with PIAB Remote Read-Out Instruments for convenient display.
PIAB Crane Weigher function:
The pull rod operates the pointer through a spring loaded floating transmission mechanism. This allows the PIAB Crane Weigher to withstand very severe shock loads and rapid unloading. The power-absorbing element consists of specially made Belleville type spring washers, so designed as to be entirely free from wear. The spring washers cannot be overloaded.
PIAB Crane Weigher safety:
The PIAB Crane Weigher safety factor is 5:1; it is guaranteed to withstand a load of 5 times full scale reading before rupture. The resistance to rupture is tested by the National Swedish Institute for Materials Testing. The PIAB Crane Weighers, types WA-WG have drop-forged steel eye brackets (SIS 2174 St 52-3N acc. to DIN 17100, 50 D acc. to BS 4360); giving a guaranteed impact resistance to -4F (-20C).The O-ring of the pull rod is protected by a neoprene rubber membrane. On instantaneous unloading, e.g. breaking test, the return movement of the pull rod is retarded by a specially made spring washer. The PIAB Crane Weigher is approved by the National Swedish Board of Occupational Safety and Health for integral connection in the carrying system of a lifting device and for weighing of test loads in connection with inspection.
PIAB Crane Weigher contact function:
The PIAB Crane Weigher can be equipped with a built-on adjustable contact head. Using a micro switch. which is directly influenced by the pull rod, the PIAB Crane Weigher gives an electrical contact function at a previously set value. The contact head is built-on as an extension of the PIAB Crane Weigher. For the types WA-WO the extension is about 3.15/16" (100 mm), for WQ about 4.1/3" (110 mm), for WS about 3.5/64" (78 mm) and for the types WU-WE about 3.35/64" (95 mm). The PIAB Crane Weighers types WA-WO can be equipped with up to two micro switches and types WQ-WE with up to five micro switches. The electrical connections are made in the terminal box to a numbered connection block.
