As mentioned a number of times in this blog, weighpads are frequently enquired about but rarely the right system for the job.Sometimes though they really are the best product for the job as long as the user is aware of what they can and cannot do.
Recently we were approached by a customer who had been trialing weighpads from other manufacturers and been disappointed with the results. The reliability of one product was an issue but what was concerning them most was the lack of accuracy.
We decided that the best way to assist would be to visit them and show them how to do it properly. Not only would this demonstrate the correct procedure for using weighpads but it would also illustrate how time consuming and labour intensive it can be to get an accurate weight.
Using our contacts with DVSA, arrangements were made to visit one of their enforcement sites so that we could ensure accurate weights on the perfectly flat concrete approaches but also so that we had a calibrated axle weighbridge for comparison purposes.
|Portable Weighpads - ideal for some jobs when used correctly.|
The whole exercise, weighing just one vehicle, took a whole morning with five people on site. As a minimum three people are needed; one to drive the vehicle and two to manoeuvre the weighpads, but at least the exercise was done correctly and accurate, repeatable weights obtained.
One of the most interesting elements of the task was taking the weighpads off the perfectly flat concrete approaches and using them on an adjacent piece of ground with a slight incline. We did this as, having proved the pads were accurate in ideal conditions, it was useful to try them in a more typical working environment.
The difference in results was quite marked. Using the weighpads correctly on a perfectly flat concrete approach produced good results but using them on a piece of ground on an incline meant that weight distribution was changed and different axle weights recorded.
It was a very good method of not only demonstrating how accurate weighpads can be when used properly but also the limitations of them as a product.
This particular customer was delighted that we’d taken the trouble to demonstrate not only the pros but the cons of using weighpads and, now they are fully aware of what is involved in doing it right and what the pitfalls are of doing it wrong, an order is on its way to us.