List of Articles in the Category Crane Scale

Selecting and Using Precision Scale Test Weights

Calibrating Scales with Test Weights

Weighing accuracy is a primary criterion for precision scales, analytical balances and moisture analyzers where readout (the smallest weight difference displayed) and linearity (the ± deviation from the actual weight) are governed by GLP, ISO and other standards.  Test weights have a critical role to play when scales  with capacities from milligrams to tons are not automatically internally (see below) calibrated . The type of calibration, whether internal or external, is indicated on scales’ spec sheets.

How to Maintain a Digital Crane Scale

The HTS crane scale

The HTS crane scale

A digital crane scale, while ruggedly constructed to perform heavy lifting and weighing functions, is also a precision instrument that must be maintained on a regular basis.  While maintenance is important for any weighing instrument from an accuracy standpoint, heavy-duty crane scales must be checked regularly to avoid a mechanical failure that could cause a load to drop with potential disastrous results.

Crane scale manufacturers such as Kern, whose products are offered by Tovatech, provide maintenance instructions as part of their operations manuals.  We’ll use here as an example the Kern HTS industrial hanging scale available in four models with maximum weight capacities from 1500 to 10,000 kg (~3,300 to 22,000 pounds)  The scale is powered by a rechargeable battery and is shipped with an infrared, battery-powered remote control with a range of approximately 25 feet.

Crane Scale Maintenance Guidelines

Key lifting components on crane scales … Read the rest

Practice Makes Perfect: How the Pharmaceutical Industry Uses Precision Scales

kern-pcb-1000-2The primary measure of the effectiveness of a pharmaceutical product is how beneficial it is for the patient, while introducing minimal side effects. A vital part of the pharmaceutical manufacturing process occurs at the quality control stage. A variation of a few milligrams in a powerful drug can mean the difference between a nightmare of side effects, a harmless and ineffective placebo, or a valuable treatment method. The key to ensuring that a “wonder drug” achieves the goals that the developers set out for it is careful measurement via a laboratory scale.

Types of Laboratory Scales
Just as various types of microscopes offer the ability for researchers to see items ranging from bacteria down to molecules, different types of laboratory scales offer the ability to measure items to within very small masses. These scales carry specific names to differentiate their levels of readability:

  • Precision balances vary in resolution and some
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Crane Scale Safety Tips

crane scale with pipesA variety of crane scales and hanging scales are offered by Tovatech to handle heavy duty overhead industrial weighing.  In such environments safety is of paramount importance, and for that reason we’re publishing this post on crane scale safety tips.  These are based on recommendations provided by Kern, one of our key suppliers of industrial and scientific weighing equipment, and as detailed in the operations manuals of the models offered.

Crane Scales for Weighing Only

While this seems logical it appears from the safety recommendations that these scales are used for non-weighing activities such as conveying persons (really!), pulling loads over inclined surfaces, and towing loads among other non-weighing applications.  They are not designed for dynamic weighing, to move loads from point A to point B other than to remove from or place on transports, or to suspend loads “out of the way” for a period of time.  The latter … Read the rest

Compact Digital Crane Scale with Remote Readout

HFC crane scale with remote readout

HFC crane scale with remote readout

Time is money, so quickly determining or confirming the weight of products or pallets being loaded or unloaded at warehouses, transportation hubs, construction sites and similar locations is quickly accomplished using a compact Kern HFC digital crane scale with remote readout.  This allows personnel to confirm weight against manifests when they are as far as 100 meters (328 feet) away from the crane scale.

Working as a tensile force gauge, Kern HFC crane scales available from Tovatech are offered in four maximum weigh capacities: 1000, 3000, 5000 and 10,000 kg.  Respective readouts are 500, 1,000, 2,000 and 5,000 grams.

Both the digital crane scale and remote hand-held display device are powered by rechargeable batteries for up to 30 hours of operation or by optional 3 x 1.5 volt AA batteries for up to 40 hours of operation.

The Kern digital crane scale display modules … Read the rest

Specifying Remote Display Crane Scales to 16 Tons Capacity

The HFT crane scale remote radio display

The HFT crane scale remote radio display

Heavy weighing using crane scales in assembly bays, on loading docks and other poorly illuminated areas is less strenuous when the load weight is displayed on a hand-held integrated radio module.  This is a major feature of the new Kern HFT crane scale line in four weighing capacities to 15,000 kg (16 tons) now available from Tovatech.   Operating range between the scale and the radio module is to 100 meters (328 feet).

In addition to easing operator eyestrain the rechargeable battery powered radio module provides RS- 232 connectivity to a printer, PC or network.  Battery life in the scale is to 80 hours and in the display device to 40 hours.

Useful Digital Crane Scale Features

The scales’ steel construction and absence of an integrated display make them ideal for continuous use in industrial applications.  In addition they

  • Filter vibrations in order to
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Use Proper Rigging with Your Hanging Scale when Weighing Heavy Animals

The Right Way to Use A Hanging Scale

The Right Way to Use A Hanging Scale

When you are using a hanging scale you have to be careful.  If you are weighing large animals or mammals – irrespective of whether they are terrestrial, aquatic, or marine – you need to take some safety precautions.  Always use proper rigging that will hold it properly.  Improper rigging can create a strain and it may give way under the force of gravity.  Which is another reason – the potential for a very heavy mammal or animal to suddenly fall – that you do not raise the animal too high above ground level.  See this album and note the way a heavy animal should not be weighed.

For further information visit shutterbug.ucsc.edu.