Conclusion

When considering which type of weighing machine to use for your own particular operation, it is important to take in to account: -

• the amount of weighing expected

• the siting of where the weighing will be done

• the type of vehicle to be weighed

• whether it is the axle or the gross weight that is required

With this in mind, there are various additional points worth considering.

Price:

There are quite wide variations in price, not all of which relate to variations in performance, but more often to variations in the method of weighing and the various options available.

Accuracy:

Not all ways of expressing accuracy are comparable. Some equipment Will claim +/- 'x'% while others claim +/-% full scale deflection. If a weigher has 1% full-scale deflection and full scale is say 40 tonnes, then this in equivalent to +/- 0.4 tonnes. However it could also mean +/- 0.4 tonnes at a weight of 20 tonnes or even 10 tonnes.

Maintenance:

This is to some extent a function of design and technical complexity, but it is sensible to find out what can go wrong and then find out how much it will cost to put it right. Finally, having pointed all the problems and pitfalls of weighing your vehicles and the penalties if you are found overloaded, a quick note for the authorities. They almost always allow the vehicle some margin for error and it may be as much as 5%. This does not mean you can load your lorry to the legal limit and then add 5% for good measure. It does mean that good weighing equipment, well sited and properly used and maintained, has the levels of accuracy needed to keep you on the road, maximising the loads being carried.

Part Length Weighbridge

These weighbridges are usually 3 or 4 metres long and are most frequently found on farms where they are used to weigh agricultural tractor and trailer combinations. They are essentially a compromise between a full length and an axle weighbridge, and should cost less than the full-length weighbridge. Part length weighbridges can be used to obtain tractor and trailer bogie weights of large articulated trucks and also individual axle weights of other road vehicles provided (as in the case of full weighbridges) that the adjacent roadway is firm, flat and level

Options & Accessories

Many manufacturers of vehicle weighing equipment can design and build systems to meet individual customer's requirements, or can supply a wide range of accessories with standard products. Such options may comprise special indicators, printers and software packages to enable information to be integrated with access and control equipment, specific software, radio, satellite and GPs systems.

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