Timeline for Liquid throughput hall sensor giving odd number of pulses plus only works in horizontal level
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 24, 2015 at 14:09 | comment | added | Spehro 'speff' Pefhany | From their website, Bio-Tech seem like a responsible company. Other than the obvious suggestion to talk to their support folks about the discrepancies you believe you are seeing (2:1 is not small), I do think you should test the micro with a signal generator up to XX Hz where XX is much higher than the average flow. | |
| Apr 24, 2015 at 13:55 | comment | added | pascalwhoop | The company is called Bio-Tech, they seem somewhat alright, however I have no idea how a well-respected company for sensors should look like. I know Bosch thats about it :-D there's no curves, just the numbers.. | |
| Apr 24, 2015 at 13:39 | comment | added | Spehro 'speff' Pefhany | Sounds reasonable- is it a well-respected sensor maker? If so, they should have curves showing the accuracy vs. flow rate, not just a single number (at the best possible constant flow rate). The accuracy will decrease to zero at low flow rates (probably including the lower end of the quoted measurement range). If it's a no-name offshore thing, then I'm afraid that the accuracy numbers may be "somewhat" on the "optimistic" side. | |
| Apr 24, 2015 at 12:52 | comment | added | pascalwhoop | Hey. I give 5V to the Vcc Input of the sensor which has a working range of 5-24VDC. I use 3.3V to pull up the Signal, since the Input of the RPI can only handle that much Volt without breaking.Appearently the Sensor has +-0,5% error for repeatability and +-2% for accuracy. Those values are totaly fine for me but what I'M seeing is 100% more edges than expected + 10% error. The software is tested separately, I mocked the GPIO interrupts with simple keyboard presses and made 1 keypress = 1 pulse | |
| Apr 24, 2015 at 12:33 | history | answered | Spehro 'speff' Pefhany | CC BY-SA 3.0 |