Timeline for Precision measurement of liquid levels
Current License: CC BY-SA 3.0
15 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 8, 2017 at 12:11 | comment | added | SF. | If parameters of the container and liquid are known, measuring the mass and temperature and deriving level from that should be considerably easier and more precise. Also, surface tension on such size scale makes the surface positively mountainous. | |
| Jan 3, 2017 at 21:10 | answer | added | Odano Naotake | timeline score: 2 | |
| Aug 12, 2015 at 21:52 | answer | added | Sam | timeline score: 2 | |
| Aug 12, 2015 at 0:43 | answer | added | Mahendra Gunawardena | timeline score: 1 | |
| Aug 11, 2015 at 12:26 | comment | added | Worldsheep | Upper and lower bounds aren't very fixed... I guess ideally it would be 1cm-10cm (pretty large range, even from 0cm)... I'm thinking about capacitive level sensors, but I don't think they can reach this precision either. | |
| Aug 11, 2015 at 11:56 | comment | added | Chris Mueller | @Worldsheep Over what range do you want to be able to measure the height, i.e. what are the upper and lower bounds? | |
| Aug 10, 2015 at 22:28 | answer | added | nivag | timeline score: 3 | |
| Aug 10, 2015 at 16:30 | history | edited | Air | CC BY-SA 3.0 |
If you ask "what's the best" you will tend to attract spam and opinion. Don't use equation formatting simply for SI units and values.
|
| Aug 10, 2015 at 16:02 | comment | added | Worldsheep | @ rdtsc: could you detail a bit more part 1, I'm not familiar with that kind of sensors, do you have any example? | |
| Aug 10, 2015 at 15:51 | comment | added | rdtsc | From an electronics perspective, two analog sensor types come to mind. 1. Weight measurement. Strain gauge, heavy amplification, averaging, and filtering. 2. Ultrasonic wave from top, measure time to reflection detected. Would need a very fast processor/DSP to measure millionths-of-a-second differences in delays. Perhaps a good question for electronics.stackexchange.com | |
| Aug 10, 2015 at 15:34 | comment | added | Worldsheep | I should have flows of about 20ul/s... In order to verify that I want to check if after about three seconds I have additional 50ul in the tank. The first idea was to measure the flow with a flowmeter but this induced two problems. The Flowmeter touches the fluid and it is quite expensive. | |
| Aug 10, 2015 at 15:28 | comment | added | Worldsheep | What do you mean by 90 um of liquid? Yes, I was wondering the same thing about surface tension. But I think it isn't an issue since the radius of the tank is quite large and surface tension is important only close to the walls of the tank (isn't it?). Not very fast for the time response. | |
| Aug 10, 2015 at 14:24 | history | edited | Fred | CC BY-SA 3.0 |
Fixed grammar of title
|
| Aug 10, 2015 at 13:49 | review | First posts | |||
| Aug 10, 2015 at 15:28 | |||||
| Aug 10, 2015 at 13:47 | history | asked | Worldsheep | CC BY-SA 3.0 |