FAQ 's
Are Admixture Scales more expensive
Are Scales more expensive to install than metered systems?
However, the ongoing maintenance costs for the flow meter systems are much higher, as the flow meters need to be serviced at least biannually and each flow meter can only be refurbished once or twice then needs to be replaced. We have estimated that the payback due to reduced maintenance cost for the admixture supplier is under 2 years.
We also strongly believe that any investment required by the concrete producers is paid back over and over, due to the improved accuracy, correct dosage and usage of admixture, reduction in non-conforming concrete and disputes, improved consistency and reliability ensuring they have confidence to optimise admixtures dose and mix costs.
Are there more moving parts on a weigh system?
The system essentially has ball valves, an actuator and proximity switch on each hopper.
To date there has been very little maintenance required on units in the field once they have been installed. They are constructed with high quality components and have stainless steel hoppers and frames. They are incredibly robust and have a proven significantly longer life as well as lower maintenance requirements.
Flow meters require ongoing refurbishment and replacement
Who is certified to calibrate the scales?
The admixture scales will form part of the concrete plants scale management system or process and should be carried out at the frequency required to ensure the plant is ISO 9000 compliant, calibration is legally compliant and there can be little dispute regarding what is dispensed vs the batch record.
Are Flow meters calibrated?
How do you ensure dosing calibration into the same vessel, different admixtures have different S.G. and weights?
Admixture dosages are converted from volume to mass in the mix management system and then uploaded to the batch computer in mass, mix proportions are correct as per the mix design.
Both systems have positives and negatives. Depending on the application and location, you would need to consider which system best suits?
This may be true as both systems do have their Pros and Cons – in terms of Cons scales are typically more expensive however in every other key aspect e.g. accuracy, speed, reliability the admixture scales are substantially superior. Thereby minimising risk, improving accuracy, consistency, confidence and ability to achieve full potential of admixtures.