Very Accurate Front End Loader Scales from Instant Weighing

Applying the principles behind load cell temperature compensation, Instant Weighing has found a way to better compensate for the temperature changes that the front end loader experiences during its day of operating.

Temperature changes are experienced during the cycle of day and night, and with the starting and stopping of a front end loader during its daily operation. Ambient temperatures in the NW changes greatly between day times and night times.

Comparison of load weight

In the following example the front end loader is parked up while awaiting for the next road-train to arrive, as each road-train driver loads themselves.

Our client obtains the load’s weight using the COMPULOAD scale to load their 4 trailer road trains to haul ore 400kms -500kms to port.

The second load weight is obtained by the port authority as they load the ship, and the following comparison of weights were recorded.

1st shipment

The COMPULOAD scale recorded a total weight of the ore transported as 18,800t.

The port authority recorded a difference of just 37t. That is an error of 1/5 of 1%.

2nd shipment

The COMPULOAD scale recorded a total weight of the ore transported as 20,070t.

The port authority recorded a difference of just 48t. That is an error of 1/4 of 1%.

COMPULOAD ability to temperature compensate has saved our customer substantial wear and tear of their equipment and expense to fulfil their contract.

There is an additional cost of about $1,600.00 plus GST to incorporate this modification for a new or existing COMPULOAD scale (excluding any travel), but the results justifies this expense.

As a side issue, the COMPULOAD scale is programmed with specific target weights for each individual identified axle group to stop the operator overloading.

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Safety Of Life At Sea Scale (SOLAS/AMSA) Testing by Instant Weighing

Safety Of Life At Sea (SOLAS) is the International body that sets the international rules for the safety of persons at sea. The Australian Federal Department called the Australian Maritime Safety Authority (AMSA) interrupts the SOLAS legislation as it will be applicable to Australia and overseas these laws.

As from 1/7/2016 SOLAS and AMSA changed the way that an export sea container VGM weight is to be determined. AMSA has determined that any scale can be used to determine the VGM weight of an export sea container, but before that scale can initially be used, it must be tested to the OMIL/NMI set of tests applicable for that type/capacity scale, and that verified test masses must also be used for the testing.

The new SOLAS/AMSA rules also sets out two ways that the VGM weight of an export sea container can be determined.

Method 1. Weighing the loaded container as one complete unit.

Scales suitable to achieve this type of weighing are weighbridges, straddle carriers scales, side lifters fitted with scales, scales installed onto reach stackers, very large capacity forklifts fitted with scales, scales built into a frame that the sea container sits on whilst being loaded and scale jacks.

Method 2. Weighing everything being loaded into the sea container.

Weighing everything being loaded into the sea container (including tie downs and packaging) close the doors and the combined weight of all placed into the sea container is added to the tare weight as marked on the side of the sea container. This new figure is the total VGM weight for that sea container.

Scales suitable to achieve this type of weighing are large, medium and small capacity platform scales, forklift scales (analogue, digital and load cell).

Instant Weighing has both the licensed scale technicians and the verified test massed including flat-rack to be able to test all these different types of scales from the small platform scale to the very large weighbridges. Instant Weighing’s speciality is scales on forklifts of all sizes, reach stackers, straddle carriers, and sidelifters.

Our written scale test reports have been submitted to AMSA as part of a company submissions following the company being audited by AMSA and these scale test reports have been accepted and approved by AMSA.

Call Instant Weighing today to solve your SOLAS/AMSA weighing challenges using scales to determine an export sea container VGM weight. We work from Broome to Esperance.

Instant Weighing Offer New AMSA & SOLAS Scale Testing


The new Federal Government AMSA laws regarding the testing of any scale used to determine the Verified Gross Mass (VGM) of any export sea container whether using Method 1 or Method 2 can incorporate many different types of scales. Each type of scale must be tested to the appropriate National Measurement Institute (NMI) set of testing rules applicable for that type/capacity scale. Only verified test masses (Regulation 13 test masses) can be used to test the scales. Your existing scale does not have to be a Trade Approved scale, but must be able to pass the complex set of NMI tests applicable for that type/capacity scale.

There are many different Scale Companies with licensed scale technicians that can test many of the different types of platform scales say from 30kgs right up to the 10,000kgs platform scales that could be used in the Method 2 weighing. However, with Method 1 weighing (weighing the whole sea container as a complete unit) the testing becomes more specialized, (ie weighbridges). It becomes even more specialized with very few companies and their technicians holding the NMI Class Y(b) license when it comes to testing the scales on such equipment as forklifts (whether small or large capacity) and especially the Reach Stackers and Straddle Carriers.

Instant Weighing can do all of the above testing, but specializes in the testing of your scales requiring the unique NMI Class Y(b) license. That is scales on forklifts (of all sizes and capacities) whether fitted with forks or spreader bar and especially scales on your Reach Stackers.

Instant Weighing first objective is to try and pass your existing scale as set out in the AMSA laws.

However, should your existing scale fail (even after recalibration attempts) the complex set of NMI test procedures, Instant Weighing has scales that when installed onto these types of machines, the rules under the NMI set of test rules, does allow our scales, to legally have a greater Maximum Permissible Error (MPE) to try to get the scale to pass. This is because the COMPULOAD series of scales for such equipment uses a weighing method called Dynamic Weighing.

One further benefit installing the COMPULOAD 6000 series scale onto either the forklift or reach stacker, is its ability to transmit the weight data (including container ID, date and time) back to the office PC via 3G or 4G to allow the sooner completion of the paper trail required by the Port Authority.

Should all of the above still not achieve an AMSA testing pass, for equipment fitted with the spreader bar lifting systems, there is a 3rd more expensive scale option still available, so that the forklift or reach stacker scale, can still be used for AMSA VGM weighing.

This method means changing out the pins that connects the hood to the spreader bar and replacing them with pins incorporating load cells. Alternatively, the twist locks can also be replaced with twist locks incorporating load cells.

Call Instant Weighing now Ph 9274 8600 for the testing of your existing scales to see if they can be AMSA compliant to determine a containers VGM weight.