pH circuit

This project is very simple.

I need a pH circuit that will have the following requirements:

- Single input power supply - +5VDC

- Galvanic isolated

- An ADC will be connected to AIN of attached circuit diagram

- Operating pH range is 4-10 pH (Calibration will be done on these 2 pH standard fluids)

- Gain must be so that ADC is reading approximate the following:

* pH 4 - 4V

* pH 7 - [url removed, login to view]

* pH 10 - 1V

This gain does not need to be really precise, since the MCU reading the ADC values can be calibrated based on 3 point calculation. Just an approximate voltage is just fine. So, a +/- [url removed, login to view] in any of the pH readings would work.

- No use of trimpot is a plus.

- Circuit will need to be tested and confirmed working to be accepted. I can provide pH probes for testing is necessary.

Taidot: sähkötekniikka, elektroniikka, tekniikka, Piirilevyn asettelu

Näytä lisää: i need a electrical engineering, 2 power standard, PH, mcu, fluids, electrical project work, electrical diagram, Electrical CIRCUIT, calibration, adc, adc calculation, galvanic, power circuit, adc project, voltage supply, circuit diagram need, matlab circuit dynamic voltage restorer, can voltage work, project power supply, voltage power supply

Tietoa työnantajasta:
( 1 arvostelu ) Fremont, United States

Projektin tunnus: #6420262

Myönnetty käyttäjälle:


I have made one of these circuits a long time ago for detecting PH levels in swimming pools. The PH probe I used give a voltage out of 56mV per PH number. PH7 = 0V, PH8 = -56mV, PH6 = +56mV So it was bipolar around P Lisää

$250 USD 5 päivässä
(16 Arvostelua)

10 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön


Hi i can help you , i have more design in PH and temp sensor with little cpu and transfer data to PC via USB , see my portfolio for see this projects. Best Regards Miky.

$155 USD 3 päivässä
(34 arvostelua)

Hello, I am an Electronic Engineer and have four year experience in designing circuits and developing firmware for control systems. Please check my previous [login to view URL] to work with [login to view URL] you Lisää

$155 USD 3 päivässä
(7 arvostelua)

Just a question here, what part of this project is actually going to be dipped into a solution to measure pH? It's fairly complex to manufacture decent pH probes, but it doesn't sound like this involves simply reading Lisää

$133 USD 10 päivässä
(3 arvostelua)

Dear Sir, My self Priyanshu soni. I am electrical -electronics engineer with MBA in HR. I am working in CAD/CAM Comapny as a Software engg and project manager. Specialized in PCB Designing, CAD/CAM, 2D &3D, revit, Lisää

$222 USD 4 päivässä
(3 arvostelua)

Hello! Do you need fully finished device or only scematic, board drawings and firmware for MCU? What Ph probes do you use?

$144 USD 14 päivässä
(1 arvostelu)

Please add Me ((((((((((((((((S.k.y.p.e I.d---zararop)))))))))))))))))))))))) for more discuss ........................................................................................................................

$30 USD 1 päivässä
(1 arvostelu)

Hi there. My name is Keith and I am a professional electrical engineer here in the US. I graduated Vanderbilt University with a BS in mechanical engineering. I now work solely as a contracting designer and freelancer. Lisää

$155 USD 10 päivässä
(0 arvostelua)

hey i i am an electronics engineering student.i have done many projects in my last 3 years.i will do it for you.

$155 USD 3 päivässä
(0 arvostelua)

hello, This is a very interesting job and i am really interested to do this job. i am expert in embedded system design. i made many products using avr and pic microcontroller. please knock me when you are free th Lisää

$100 USD 3 päivässä
(1 arvostelu)

I have more than 10 years experience in microcontroller programming and I can do it without any problems

$244 USD 5 päivässä
(0 arvostelua)