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Scales & Overload Devices
Scales & Overload protection serve two important goals; improved safety and increased effeciency. Crane scales and overload devices allow operators to know how close the load they are lifting is to maximum capacity and if a dangerous situation exists if a load is over capacity. They also increase effeciency as they allow operators to maximize the work they accomplish during their shift.
The inherent efficiency of the crane scale guarantees its continuing popularity. A correctly installed crane scale lets operators accomplish two things at once; move materials and simultaneously gather accurate weigh data or inventory information.
The ideal crane scale must be more than accurate and the following scales are not only accurate, but easy to read and unquestionably safe for overhead operation.
Crane Scales
| Dillon AP Dynamometer |
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The Dillon AP Mechanical Dynamometer exhibits limitless versatility as a tension, traction and weight measuring instrument. Available in capacities from 500 to 100,000 pounds, 200 to 50,000 kilograms, 2,000 to 500,000 Newtons. It is designed for a long life. The core of the device is a steel flexing beam. The enclosure is a heavy aluminum alloy case with baked on protective finish. The dial face is sealed and cushioned with a rubber gasket. The AP Dynamometer is safe for overhead lifting with a 5:1 ultimate safety factor on most models and can be used like a tare. It can cancel preset load values up to 20% of device capacity.
 Dillon AP Dynamometer Brochure
Dillon AP Dynamometer Specifications |
| Dillon EDExtreme |
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The Dillon EDXtreme is a remotely monitored, modular dynamometer so flexible it could serve as a simple hanging scale or could form the hub of a complex weighing system. With multiple dynamometers monitoring many critical lifting points in the same airspace - all from a single wireless remote. Available in capacities up to 250,000 Tons! This is a precise instrument that can survive real-world punishment. It has superior strength and corrosion resistance, a 5:1 strength and safety ratio creates low stress and a long product life, and NEMA 4X/IP55 for reliability in any enviornment, in-plant or out on the job site.
Dillon EDExtreme Brochure
Dillon EDExtreme Specifications |
| Dillon EDJunior |
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The EDJunior is an extremely well-built instrument that gets straight to the point - apply a load and take a reading. Its Spartan design is a direct response to industries that have wanted a well-built instrument that could be relied upon for simple, yet critical measurements of force and weight. The load element design and strain gauges chosen for the EDJunior produce and accuracy of 0.2% (full scale). The exclusive Dillon SOFTKEY interface provides direct access to setup and display functions without the typical confusing menu structure. Through the use of aircraft quality aluminum, Dillon has made the EDJunior an easy-to-position, highly mobile instrument with exceptional strength. It offers an impressive 7:1 factor of safety at all capacities through 10,000 lb and 5:1 at 25,000 lb. Dillon's distinctive angle-body design further eliminates unnecessary weight and streamlines the unit to help prevent binding.
Dillon EDJunior Brochure
Dillon EDJunior Specifications |
| Tractel Dynafor® LL Series |
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Tractel Dynafor LL Series is a large assortment of electronic load indicators working according to the dynamometer principle. They are precision load indicators to measure tensile forces and determine hanging loads.
The DYNAFOR™ LLX is available in capacities from 500 lbs to 250 t (500,000 lbs), with precision of +/- 0.2 % .
The DYNAFOR™ LLX2 unit consists of a sensor and a remotely installed display. It is available in capacities from 1,000 lbs to 10 t (20,000 lbs), with precision of +/- 0.1%
DYNAFOR™ LLXh unit consists of a sensor and a remotely installed display. It is available in capacities from 15 t (30,000 lbs) to 250 t (500,000 lbs) with precision of +/- 0.2%
DYNAFOR™ LLZ devices offer the best possible quality/price ratio among electronic load indicators. They are available in capacities from 500 lbs to 20 t (40,000 lbs), with precision of 0.8 %.
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| Tractel Dynafor® MWX |
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The DYNAFOR™ MWX+ and MWX+ TR are a part of the Tractel crane scale product range. They are specifically suitable for the quantification of hanging loads (Lbs) in industrial environments. They are available in capacities from 1,000 lbs to 50,000 lbs, with precision of 0.1 %. The Dynafor MWX is equipped with permanent hanging ring and hook with safety lever. An optional wireless remote instrument reading is also available.
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Overload Devices
Overload devices have proven to be an important step towards overhead crane safety. They provide operators with vital information, letting them know if the load that they are lifting is at a critical capacity. Overload devices can be wired in a number of ways. The most common techniques for setup is to activate a warning lamp/horn or even to shut off the signal for lifting when a load is too large. Placing the overload switch in the "up" circuit allows a load to still be lowered in the event that it becomes overloaded, even though it will not raise.
| Dillon Craneguard |
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Craneguard force control switches provide crane overload protection and slackline detection. They are an effective and affordable warning system that is easy to install. They clamp directly on hoist or crane wire rope, there is no need to cut rope or interrupt service. They can be wired to activate a warning light or audible alarm or interrupt a crane's power source when cable loads reach specified levels. Craneguard is also versatile as each system can include from one to four switches, each with a preset load limit.
Dillon Craneguard & Dynaswitch Brochure |
| Dillon Dynaswitch |
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Dillon load limit Dyna-Switches are the economical answer to process control weighing, automation and overload applications where electrical circuits need to be activated proportional to load. Capacities from 100 lb to 50,000 lb are available with one to four control switches infinitely adjustable over the entire range.
Dillon Craneguard & Dynaswitch Brochure |
| Tractel Dynasafe® Load Limiter |
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The Tractel Dynasafe Load Limiter is a mechanical load limiter for installation on load bearing wire rope. It generates a signal in the event that a programmable target value is exceeded. Available in capacities from 550 lb to 26,000 lb per fall. There are versions with one threshold or two independent thresholds.
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