Based on LORRIC's original patented AxleSense technology, LORRIC’s R&D team keeps improving and elevating its software and firmware performance for more perfect integration with the hardware to provide better usability, more reliability, and accurate flow measurement for users. This leads LORRIC's paddlewheel flowmeter to become one of the best flowmeter options in the market with innovative solutions to users’ problems.
When LORRIC thought about pulse error rate from high to low flow velocity, we found that there is a larger rate of change particularly at middle-low flow velocity (0.15m/s~1m/s). For example, when there should be one pulse output, there were two pulses of output instead, which was an error that occurred at times. For regulating this error regarding pulse structure, we designed a new way of pulse output never seen on the paddlewheel flow meter before which is called “Pulse 2.0”. This new pulse output technology allows a pulse to be output when a certain unit of volume flows in the tee pipe with users’ unit of volume selecting (selectable units: L, US gal, Imperial gal).
The inspiration behind Pulse V2.0 comes from the change of rotation angle, coupled with a software development and computing mindset. The correction function from the LORRIC paddlewheel flowmeter helps to finetune the signal frequency. For example, when dealing with a 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 can determine the rotation angle for a pulse delivery according to the rotating speed directly. Pulse V2.0 is able to determine the rotation angle for a pulse delivery according to the rotating speed directly, and the results generated by it will be the same as the cumulative flow rate on the flowmeter.
Under different flow velocities, 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, picking a certain unit of flow rate for a pulse out is easy to be understood for communications and recording, e.g. taking 0.01L as a pulse output.
To compare with a traditional paddlewheel flowmeter, there is a fixed K value assigned to each model for calculating the flow rate.For example, They assumed that 7.7 pulse output generated per liter. The flow rate could be calculated by the result of received pulses divided by 7.7. This calculation can cause rounding error and the programmer needs to use a different program for different models. Not to mention that, by using fixed K factor, the error is significant at mid-low flow volume range.
➔ Click for more detail about LORRIC paddle wheel flowmeter with Pulse 2.0.
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