Crane Weigher (Scale)
Crane
Weigher (Scale)
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.
Facts
The PIAB Crane Weigher
is manufactured for capacities from 500 kg up to 50 ton.
Can temporarily be
overloaded by 100% without affecting the accuracy.
Large scale 295 mm with
maximum pointer, which makes the PIAB Crane Weigher exceptionally well suited
for measurements in rupture tests.
Totally pressure tight
and each instrument is pressure tested. No leakage is permitted!
Available in different
graduations:
kg, kN, daN, lb etc.
The PIAB Crane Weigher
can be equipped for remote reading or contact functions (micro switches).
Maintenance free!