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Author Topic: DENSITY Sensor.  (Read 1514 times)

Offline GulfLander

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DENSITY Sensor.
« on: August 17, 2009, 10:25:30 PM »
Tama po ba pinag postan ko? heheh :)

Tanong ko lang po kung saan may available ng ganto 'Density Meter' for Liquid po sana, sa Philippines? Para po sana sa aming thesis. Mahal po ba to? Mga how much po kaya? :)

Thanks po ng madami sa mga magrereply!! :)


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DENSITY Sensor.
« on: August 17, 2009, 10:25:30 PM »

Offline Ganda692002

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Re: DENSITY Sensor.
« Reply #1 on: August 17, 2009, 10:59:38 PM »
density ng ano??..

kung pure water(or other newtonian fluids) differential pressure sensor ang gamit dyan but its not the only way.. note density of water changes with pressure temperature and other impurities such as salinity... in the laboratory more precise measuring of density is done not with electronic sensors.. but the hard way by measuring mass and volume or similar ways...

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Re: DENSITY Sensor.
« Reply #1 on: August 17, 2009, 10:59:38 PM »

Offline audiomachines

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Re: DENSITY Sensor.
« Reply #2 on: August 18, 2009, 08:31:54 AM »
ndi kya specific gravity/density meter po tinutukoy nyo?
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Re: DENSITY Sensor.
« Reply #2 on: August 18, 2009, 08:31:54 AM »

Offline Shey

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Re: DENSITY Sensor.
« Reply #3 on: August 18, 2009, 09:15:13 AM »
i think a container with a known volume plus load cell is easier and more economical to implement.. just pour the liquid in a container with known volume tapos weigh the liquid then divide mo lang yung mass ng volume eh kuha mo na ang density..
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Re: DENSITY Sensor.
« Reply #3 on: August 18, 2009, 09:15:13 AM »

Offline GulfLander

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Re: DENSITY Sensor.
« Reply #4 on: August 19, 2009, 03:43:27 PM »
Vinegar po ang liquid namin, yung sensor po sana ang magmemesure ng density ng suka after filtration/decantation process. Sbi po kasi nung Chem Engr na nakausap namin ay density meter daw po ang maari para madetermine if nabawasan na yung latak sa liquid.. Ayon po..

Di ko nga din po alam whether Density meter po ba ang tawag sa dapat namin gamitin eh.. Ano po ba  ang pwd gmitin. Plano po kasi namin eh mag assign ng constant value fr comparison sa microcontroller po sana.

Ayon po.. :)

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Re: DENSITY Sensor.
« Reply #4 on: August 19, 2009, 03:43:27 PM »

Offline GulfLander

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Re: DENSITY Sensor.
« Reply #5 on: August 19, 2009, 03:44:47 PM »
i think a container with a known volume plus load cell is easier and more economical to implement.. just pour the liquid in a container with known volume tapos weigh the liquid then divide mo lang yung mass ng volume eh kuha mo na ang density..

Load cell, yun p ba yung nagdedetermine ng volume? parang napakinig ko na nga din o yun.. so pwede po kaya un dun sa condition stated sa huli kong post sa thread na to?? :) tnx.

Offline Shey

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Re: DENSITY Sensor.
« Reply #6 on: August 19, 2009, 03:54:05 PM »
Load cell, yun p ba yung nagdedetermine ng volume? parang napakinig ko na nga din o yun.. so pwede po kaya un dun sa condition stated sa huli kong post sa thread na to?? :) tnx.

No. load cell measures the weight of an object.. yan yung sensor ng mga digital weighing scale.. kaya sabi ko dun sa first post ko, you have to put the liquid in a container with known volume para makuha ang density..
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Offline GulfLander

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Re: DENSITY Sensor.
« Reply #7 on: August 19, 2009, 03:57:21 PM »
No. load cell measures the weight of an object.. yan yung sensor ng mga digital weighing scale.. kaya sabi ko dun sa first post ko, you have to put the liquid in a container with known volume para makuha ang density..

Sir Electron, Bale yung sa suka po kasi namin, Irok po, eh maliliit lang yung residue, so pwede po ba yun sa mga milligram or less?

Offline Shey

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Re: DENSITY Sensor.
« Reply #8 on: August 19, 2009, 04:30:37 PM »
Sir Electron, Bale yung sa suka po kasi namin, Irok po, eh maliliit lang yung residue, so pwede po ba yun sa mga milligram or less?

depends on the sensitivity of the load cell.. per mas maganda kung at least 50 mL ang sample size ninyo..
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Offline GulfLander

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Re: DENSITY Sensor.
« Reply #9 on: August 22, 2009, 08:19:46 AM »
depends on the sensitivity of the load cell.. per mas maganda kung at least 50 mL ang sample size ninyo..

Bale ang volume o ng aming magiging subject for the process eh roughly 3 gallons, pero ung sa nakita po namin na residue ay konti lamang xa compare to 3 gallons, siguro mga few mL lang po yun.. an o ba nalalaman ang sensitivity ng load cell?

tnx tnx! :)

Offline Ganda692002

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Re: DENSITY Sensor.
« Reply #10 on: August 22, 2009, 08:57:40 AM »
kung latak ang gusto nyo idetect maybe conductivity lang pede na.. conductivity will change kung mabawasan ng coloidal particles yung solution... conductivity is affected by distance between the probes surface area of the probes dipped in to the solution.. the solution it self and the type of metal used..

in your case if you keep distance and surface area fixed.. and measure the initial coonductivity.. then measure again after filtration.. tataas/baba dapat yung conductivity..

i've never tried this. just an idea.. di ko rin alam kung gagana kasi yung total conductivity changes depending on how much percent of the acid is in solution.. the change maynot be detectable at all..

or maybe measure nalang how transparent/opaque the liquid is gamit isang infrared tranceiver or ldr if posible.. isolate mo lang sila on external light sources.

Offline GulfLander

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Re: DENSITY Sensor.
« Reply #11 on: August 22, 2009, 09:07:54 AM »
kung latak ang gusto nyo idetect maybe conductivity lang pede na.. conductivity will change kung mabawasan ng coloidal particles yung solution... conductivity is affected by distance between the probes surface area of the probes dipped in to the solution.. the solution it self and the type of metal used..

in your case if you keep distance and surface area fixed.. and measure the initial coonductivity.. then measure again after filtration.. tataas/baba dapat yung conductivity..

i've never tried this. just an idea.. di ko rin alam kung gagana kasi yung total conductivity changes depending on how much percent of the acid is in solution.. the change maynot be detectable at all..

or maybe measure nalang how transparent/opaque the liquid is gamit isang infrared tranceiver or ldr if posible.. isolate mo lang sila on external light sources.

about po dun sa conductivity, continues process o xa, parang lets say filtration or decantation process ung dadaanan, basta continues flow.. pwede p ba xa? PAng coclose loop lang  sana namin sa process.. :) tnx

Offline Ganda692002

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Re: DENSITY Sensor.
« Reply #12 on: August 22, 2009, 09:35:38 AM »
pede siguro i'm not sure, i've never measured conductivity of a flowing liquid..

I'm not realy sure kasi alam ko the flow of electrical energy in a liquid is through movement of ions in the solution electrolysis.. eh ang siste kung nagfoflow yung liquid eh you are restricting ion flow(fluid resistance may increase depending on flow velocity I think but not sure).. this requires you experiment I think hehehe..

Offline Shey

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Re: DENSITY Sensor.
« Reply #13 on: August 22, 2009, 10:06:23 AM »
Bale ang volume o ng aming magiging subject for the process eh roughly 3 gallons, pero ung sa nakita po namin na residue ay konti lamang xa compare to 3 gallons, siguro mga few mL lang po yun.. an o ba nalalaman ang sensitivity ng load cell?

tnx tnx! :)

depende yun sa model ng load cell na mapipili ninyo.. may mga load cell na kaya mag-measure ng weight as small as 1 milligram..

it would be more economical kung bumili kayo sa ebay nung digital pocket weighing scale ( 800 pesos ) tapos hack na lang ninyo yung sensor sa loob..
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Offline jepps137

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Re: DENSITY Sensor.
« Reply #14 on: August 24, 2009, 12:26:57 PM »
Ang naisip ko naman, howbout using refraction para malaman mo kung may latak pa.
Pwede rin basis is yung clarity ng liquid di ba? so more light passes through a clear liquid, may isang reference sample ka siempre. Also, naisip ko na na iba ang refraction index ng liquid kung iba ang density.

Offline Shey

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Re: DENSITY Sensor.
« Reply #15 on: August 24, 2009, 03:08:25 PM »
Ang naisip ko naman, howbout using refraction para malaman mo kung may latak pa.
Pwede rin basis is yung clarity ng liquid di ba? so more light passes through a clear liquid, may isang reference sample ka siempre. Also, naisip ko na na iba ang refraction index ng liquid kung iba ang density.

it is called Turbidity not Density.. mahirap i-correlate and Turbidity sa Density..
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Offline ferdie444

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Re: DENSITY Sensor.
« Reply #16 on: August 25, 2009, 01:48:49 AM »
m8's,pag conductivity probe(meter) ang gagamitin or any other probes like ph ay kailangan yong dynamic flow ang liquid @ di static para makuha yong true reading,because of the temperature correction factor.

-yong turbidity meter ay para sa clarity ng tubig.bale dadaan yong water sample sa inlet tube ng isang isang cell(square shape) w/ four mirrror and crossing to the beam of light and passes thru the outlet tube.in otherwords,continues ang flow ng water sample...

@ thread starter,hindi ba pwedeng ph meter na lamang ang gamitin ninyo?example:tulad ng mga mineral water,ang ph nyan ay karaniwang 7.5 to 8.5 @ pag bumababa ang ph value nya like 3 ang ibig sabihin ay strongly acid(high % of acid content) @ pag mataas ang ph like 9 eh(strongly basic nman).for calibration ay madali lamang dahil madami namang available na buffer solution like ph 4,ph 7 & ph 10.check lamang kayo doon sa rs book for measuring instrument.look for signet & great lakes products....

sorry po kung medyo O.T. na ito....thanks very much


Offline jepps137

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Re: DENSITY Sensor.
« Reply #17 on: August 26, 2009, 01:03:54 AM »
di ba mixture naman yung gusto mong sukatin? kasi yung latak niya can be 'filtered' out. so baka nga turbidity ang kailangan mo i-measure di ba? kung solution yan, kahit anong pag-filter, eh walang latak di ba?

Offline GulfLander

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Re: DENSITY Sensor.
« Reply #18 on: September 24, 2009, 06:47:58 PM »
m8's,pag conductivity probe(meter) ang gagamitin or any other probes like ph ay kailangan yong dynamic flow ang liquid @ di static para makuha yong true reading,because of the temperature correction factor.

-yong turbidity meter ay para sa clarity ng tubig.bale dadaan yong water sample sa inlet tube ng isang isang cell(square shape) w/ four mirrror and crossing to the beam of light and passes thru the outlet tube.in otherwords,continues ang flow ng water sample...

@ thread starter,hindi ba pwedeng ph meter na lamang ang gamitin ninyo?example:tulad ng mga mineral water,ang ph nyan ay karaniwang 7.5 to 8.5 @ pag bumababa ang ph value nya like 3 ang ibig sabihin ay strongly acid(high % of acid content) @ pag mataas ang ph like 9 eh(strongly basic nman).for calibration ay madali lamang dahil madami namang available na buffer solution like ph 4,ph 7 & ph 10.check lamang kayo doon sa rs book for measuring instrument.look for signet & great lakes products....

sorry po kung medyo O.T. na ito....thanks very much



oo nga po eh.. naisip ko na rin po ang pH meter, pero di ko po kasi sure if may magbabado.. gawa mga latak nga lamang po yung kailangang alisin... parang mixture nga po siguro? yun.. Siguro nga po turbidity ang kelangan namin..

May sensor po bang for turbidity? tnx tnx!!

Mejo ngayon lang po ako nakapag check ulet dahil sa ojt heheh... tnx tnx po!! :)

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Re: DENSITY Sensor.
« Reply #18 on: September 24, 2009, 06:47:58 PM »

 

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