Counting scales are great time savers that also improve the accuracy of counts when the objective is to ship or receive X numbers of widgets. They are also great for inventory management because they allow you to quickly determine how many widgets are in stock and when it is time to order more.
How do Piece Counting Scales Count?
Keep in mind that a piece counting scale can be programmed to determine the count of a number of products that are kept in the scale’s internal memory but each product must be the same. You must separate bolts from nuts, (and lock washers while we’re at it) not combine them unless you are counting assembled nuts, bolts and lock washers. And all bolt, nut and lock washer assemblies being counted must be the same. A counting scale … Read the rest
Today’s precision digital scales, also referred to as digital balances, perform a broad range of weighing-related functions in R&D, quality control, and similar applications where accuracy and precision are key criteria to meeting government, trade association, and industry-promulgated standards. For purposes of discussion this post focuses on weighing equipment used in comparatively protected environments vs. scales found on manufacturing floors, shipping and receiving departments. Let us hasten to add, however, that the need for precision and accuracy is important for any application, and equipment is available to meet required standards regardless of where scales are employed.
Precision and Accuracy Defined
Certain of our posts discussing precision digital scales and analytical balances harp on an important difference between precision and accuracy as selection criteria. Allow us to cite an example: A $5,000 wristwatch may be precise, but if the hands are set wrong it does not show the accurate time. More … Read the rest
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 include shackles, hooks and … Read the rest
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 have an on-off switch and are … Read the rest
Taking a digital platform scale to the job rather than the job to the scale is easier with the new Kern EOS-F wireless platform scale now available from Tovatech. What sets it apart from conventional platform scales is a 3-channel integrated radio that communicates between the display/control module and up to 3 weighing platforms. Connectivity extends to 10 meters clear sight. The system operates on standard current or up to 70 hours with optional battery power.
This wireless platform scale works as a non-automatic balance. Operators manually and carefully place material to be weighed in the center of the weighing plate. Once a stable weighing value is reached (the scale is stabilized) the weighing value can be read. Data should be manually recorded for record-keeping.
A grab handle and 2 rollers on the 36 x 22 x 2.5 inch weighing platform facilitate transport between locations. The compact display/control module, which … Read the rest
Tablet splitting is a common practice when you need to give less than a full dose. However this has significant risks as this study found out. Five volunteers were asked to mimic the practice in nursing homes using a splitting device, a scissor, and a kitchen knife. The splitting device turned out to be the most accurate way to split a tablet. Using an analytical balance the researchers measured the difference between each of the methods before and after the split. The scissor and knife produced statistically similar results while the splitting device had a statistically significant lower mean deviation from the theoretical weight after the split. There was also significantly less weight loss with the device than with the knife or scissors.
This study examines the effect of electrochemical corrosion on waste packages where there is a significant possibility of exposure to humidity leading to water film formation and subsequently corrosion. The objective of the study was to test the susceptibility of different metals under different ranges of humidity over a long term period of 5 years or more. The results of the study would then form the basis of input to other programs including things like ‘Recommendation for Container Materials’ amongst others. An analytical balance and a calipers were used to measure and weigh the test specimens. Both were calibrated with NIST traceable gage blocks and weights.
Here is the essential details of day 1 in a course in instrumental chemical analysis. The objective of the course is to give students experience in using the instruments used in Analytical Chemistry. The course stresses on both the instruments as well as the methods used to perform analysis. The typical lab will have optical spectrometers, chromatographic equipment, analytical balance, and other equipment. The study would be conducted from different perspectives including such things like: underlying principles, important components, historical and economic points, instrument performance, design, typical application areas, pragmatic issues and son on.
We’ve blogged about the do’s and dont’s when it comes to analytical balance use and chemical handling in the lab. We’ve however not established it with a live case study. Here is an example of what can result from improper handling of chemicals and sub-optimal use of the analytical balance. It started with the detection of abnormally high levels of arsenic in the urine of an employee at an affiliated laboratory. Investigations revealed that the entire process of using the analytical balance and weighing flouted several best practices. In fact the contamination was so high that an external decontamination crew had to be called in. The article reinforces the need to follow best practices when handling chemicals.
Here is instructions for an experiment to indirectly measure the mass of a bolt. There is a whodunit element to the exercise in that the instructions do not give clear directions as how to go about measuring the mass since the bolt is attached to a nut that cannot be removed. A number of hints are provided in the copy and also suggestions on determining the mass using a balance beam or an analytical balance. The choice of method and equipment to use is largely left to the discretion of the student with only the goals being stated and a few focus questions being asked to help establish the direction in which to move the experiment. Give it a try and pop your answer in the comments below.