Pulse V2.0- Each pulse output with a fixed flow rate: A pioneer way of pulse output by paddle wheel flowmeter leads to low error and reliable flow measurement result.

Based on LORRIC's original patented AxleSense technology, LORRIC R&D team keeps improving and elevating its software and firmware performance for more perfect integration with hardware to provide better usability, more reliable and accurate flow measurement for users which leads LORRIC paddle wheel flowmeter to become a best flowmeter option in the market with innovative solution to users’ problems.

When LORRIC thought about the pulse error between high and low flow velocity, we found there was a larger rate of change during low flow velocity (0.15m/s~1m/s). For example, one pulse is going to be expectedly output, but eventually two pulses were output instead. For correcting above-mentioned pulse output error, we took advantage of our very unique perspective and creation to develop a brand-new pulse output way never seen before, “Pulse V2.0- Each pulse output followed by a fixed flow rate volume”. This brand-new technology allows users to set up a fixed volume (L, US gal, Imperial gal, and etc.) for equipment to deliver a pulse when it senses the fluid flow by the previous set-up fixed volume (E.G. per pulse delivery with 1L flow volume). Please check left gif animation for your reference.

The inspiration of Pulse V2.0 is from the change of rotation angle with software development and computing mindset. LORRIC assumes 1 pulse delivery with 1L flow which is equal to 180° paddle’s rotation. It could be adjusted to 1 pulse delivery with 90° paddle’s rotation and the flow velocity will be calculated by the software according to the factors, such as rotating speed, and the flow rate could be received by flow velocity for further calculating how the rotation angle will be for a pulse delivery. The correction function from LORRIC paddle wheel flowmeter helps to finetune the signal frequency, for example, when low flow velocity, a pulse could be delivered by 5° equal to 1L, and for high flow velocity, a pulse could be delivered by 90° equal to 1L. Pulse V2.0 is able to determine the rotation angle for a pulse delivery according to the rotating speed directly, and the received generated by it will be the same with the cumulative flow rate on the flowmeter.


Under different flow velocity, Pulse V2.0 is able to determine the proper rotating angle to calculate the flow rate, and set up a certain unit of flow rate for a pulse output within a reasonable range (according to the difference of the pipe diameter) provided by Pulse V2.0. In other words, taking a certain unit of flow rate for a pulse out is easy to be understanded for communicating and recording, e.g. taking 0.01L as a pulse output.


To compare with a traditional paddle wheel flowmeter, there is a K value generated by the device for calculating the flow rate. We assumed that 7.7 pulse output generated per liter flow which is able to be installed into the external equipment for calculating pulse data. The flow rate could be calculated by the result of received pulses divided by 7.7. Actually, lower the flow velocity higher the friction. The curve of error correction will vary and the signal frequency will be too low, which makes calculating too difficult. Therefore, the K value under high flow velocity will be very different from under low flow velocity which leads to larger measurement error.


➔Click for more detail about LORRIC paddle wheel flowmeter with Pulse 2.0.

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