- Sep 20, 2019 SUPERtrol II (ST2) Flow Computers for Energy Metering of Steam SUPERtrol II (ST2) Flow Computers can be used in such applications for computation of heat flow, mass flow, energy rate & total, mass rate & total and corrected volume flow... Read more
- Sep 13, 2019 New TFX-5000 ultrasonic clamp-on Flow meters NEW DYNASONICS® TFX-5000 ULTRASONIC CLAMP-ON FLOW AND HEAT METERS WITH DATA LOGGING... Read more
- Aug 6, 2019 Piusi’s NEW High-Flow EX Series ATEX Pumps Piusi’s new EX100 and EX140 pumps with ATEX and UL certification, were developed to meet the specific requirements of various fuel transfer markets. The maximum safety has been applied to these pumps ... Read more
Mixing It Up! Macnaught MX Meters
Mixing It Up! - Fuel Additive Ratio Measurement Using Macnaught MX Meters
A large UK fuel refinery approached Bell Flow Systems to propose a solution to providing accurate ratio control for a new fuel additive system.
The installation transferred bio-diesel from a 1,000,000 litre tank through a loading arm gantry in to 36,000 litre fuel tankers. The refinery needed the additive to be injected in to the line at a very specific ratio. The additive would need to be pumped from a local IBC container and injected into the main fuelling pipe under pressure. The ratio had to remain fixed at 1 part additive to 640 parts biodiesel in order to perform its intended purpose.
Bell Flow Systems supplied two Macnaught MX oval gear type meters sized DN80 and DN15 for the bio-diesel and additive respectively. These would provide the high accuracy and repeatability needed for this application and would also negate the requirement for a damper on the additive line - usually needed to calm pulsating flow from the dosing pump. Positive displacement flow meters can cope with pulsating flows and other challenging flow profiles where other principles may not.
The digital signal outputs from the two Macnaught meters would then go into a Fluidwell F124 ratio controller, which is the brains of the operation.
The F124 ratio controller has the ability to control the dosing pump speed via its 4-20mA analogue output. Whilst in operation the user will enter the required ratio, i.e. 1:640 in this instance, and the F124 would monitor the flows from both flow meters. It would maintain the correct ratio by controlling the dosing pumps output of the additive.
Click to view the full range of Macnaught oval gear meters >>