I want to make a project on Viscosity Measurement . My theme is to measure a fluid's (water,oil) viscosity and show it in LCD display. But i am not getting any idea how to progress. So any help would be appreciated. Thanks in advance.
Measuring viscosity is not hard : How Can I Measure Viscosity?
I think that I would start with the rotation paddle in the fluid and measure the required electrical current and the rotation speed.
Measuring an accurate viscosity for a fluid is very hard. How would you calibrate it ?
I had my students time how long it took for ball bearings to drop in a cylinder of fluid:-
We also had a rotating cylinder:-
Other viscometers here:-
Peter_n:
Measuring viscosity is not hard : How Can I Measure Viscosity?
I think that I would start with the rotation paddle in the fluid and measure the required electrical current and the rotation speed.
Measuring an accurate viscosity for a fluid is very hard. How would you calibrate it ?
thank you for the reply i will look in to it. Is it possible to use fluid flow sensor ? and somehow use the data to measure it. I have not looked into the calibration matter .
Grumpy_Mike:
I had my students time how long it took for ball bearings to drop in a cylinder of fluid:-
Reynolds number - WikipediaWe also had a rotating cylinder:-
A Simple Arrangement for a Rotating Cylinder Viscometer, American Journal of Physics | 10.1119/1.1933144 | DeepDyveOther viscometers here:-
Viscometer - Wikipedia
Thank you. will let you if it helps.
A fluid flow sensor could be used in some situations. Suppose you have a bucket of goo, with a tube at the bottom. Then you could use a flow sensor. Some flow sensors are mechanical, like a little turbine that counts, others can measure the flow without contact to the flow. I think a doctor can measure blood flow from the outside with some kind of ultrasonic doppler effect.
Peter_n:
A fluid flow sensor could be used in some situations. Suppose you have a bucket of goo, with a tube at the bottom. Then you could use a flow sensor. Some flow sensors are mechanical, like a little turbine that counts, others can measure the flow without contact to the flow. I think a doctor can measure blood flow from the outside with some kind of ultrasonic doppler effect.
Using a fluid flow sensor will give me
Flow Rate (L/min) and Total Liquid Flow (mL) . So i think i can manage to collect to get the time of flow and flow rate . My question here is of i want to use Capillary method to measure viscosity , where the flow will be very slow will water flow sensor help ? or give accurate data.
Capillary method- http://ciks.cbt.nist.gov/~garbocz/SP946/node13.htm
The capillary method is okay, but I don't know what kind of water flow sensor you want to use.
The little turbine that counts pulses might get clogged. They are cheap and there are many of those on Ebay.
There are maybe 5 or 10 types of water flow sensors, also called "flow transducers".
Could you measure the weight of the reservoir of the fluid ?
Do you have a number of the minimum flow in ml/min ?
Peter_n:
The capillary method is okay, but I don't know what kind of water flow sensor you want to use.
The little turbine that counts pulses might get clogged. They are cheap and there are many of those on Ebay.
There are maybe 5 or 10 types of water flow sensors, also called "flow transducers".Could you measure the weight of the reservoir of the fluid ?
Do you have a number of the minimum flow in ml/min ?
Here is my water flow sensor - https://www.techshopbd.com/product-categories/water/1185/g3-4-water-flow-sensor-techshop-bangladesh
and here is a demo image what kind of output will i get - http://i.imgur.com/IG2y6yW.png
As long as you don't want to measure things like maple syrop, that could work.
The water flow sensor has a rotor (I called it a turbine) and it counts. According to the specification it is for 1 to 60 l/min. I assume that it is not accurate with a flow near 1 l/min.
Here is a small Arduino sketch that uses an interrupt : http://www.seeedstudio.com/wiki/G3/4_Water_Flow_sensor
This is a tutorial with a similar sketch : http://diyhacking.com/arduino-flow-rate-sensor/
I think that the flow sensor is not very accurate and both sketches are not very good, but this is a start for your project.
Peter_n:
As long as you don't want to measure things like maple syrop, that could work.
The water flow sensor has a rotor (I called it a turbine) and it counts. According to the specification it is for 1 to 60 l/min. I assume that it is not accurate with a flow near 1 l/min.Here is a small Arduino sketch that uses an interrupt : http://www.seeedstudio.com/wiki/G3/4_Water_Flow_sensor
This is a tutorial with a similar sketch : http://diyhacking.com/arduino-flow-rate-sensor/
I think that the flow sensor is not very accurate and both sketches are not very good, but this is a start for your project.
Thank you. It will help a lot .