Could this sensor be used continously for long terms?
JaneYu 2015-04-16 03:08:39 26 Views55 Replies Could this sensor be used continously for long terms?
if I want to use the ORP probe and module outside the arduino system, what are the settings, calibration and conversion of the measured values to the displayed one. I have a system that measures a voltage of 0-10V and I enter a certain value of the input voltage to display the value.
It is this line for me, (OrpValue=((30*(double)VOLTAGE*1000)-(75*avergearray(orpArray, ArrayLenth)*VOLTAGE*1000/1024))/75-OFFSET) which I am unable to enter, so i need to enter the correct values. Thank you
JaneYu pls add a ads module, and try the formula: orpValue=((30*(double)VOLTAGE*1000)-(75*avergearray(orpArray, ArrayLenth)*VOLTAGE*1000/4096))/75-OFFSET;
The sensor requires an external power supply. And connect the external power supply GND and the GND of esp32.
JaneYu Hi,
Where can I buy version SKU:SEN0464??? There is nowhere a link? On dfrobot, the buy link goes to wrong product:
https://wiki.dfrobot.com/Gr...
regards,
FS
JaneYu Please check the link below: https://www.dfrobot.com/pro...
The link you showed is the wiki of SEN0464
Hello DFRobot Support, I need to know which is the storage solution for the probe. I didn´t see that on wiki. Thanks!
JaneYu Hello, does anybody know what opamp they used in their circuit ? I checked the schematics but there's no refecrence for U2. Thanks !
JaneYu Hi there,
I checked your link.
It is not recommended to use, it will damage the ORP electrode probe very quickly.
JaneYu what is the standard of solution for calibrating ORP
JaneYu You could reference the product wiki. In the wiki, there are some details about how to calibrating.
can you give me only signal condiotioning board of ORP Sensor becasue i have sensor and arduino ,i just want sensor board
JaneYu And I also want to know why analog isulator is needed when more than one water quality sensor is used?
JaneYu These sensors will interfere with each other. For example, an Electric Conducivity sensor and this ORP sensor will need to have power isolation to effectively differentiate between the voltage readings they receive. The EC sensor will actively be applying electric currents into the water and therefore, the ORP sensor will have skewed data from this additional electrical input.
Hi! This ORP Probe can submerged in water continuously for long-term.
JaneYu We do not recommend continuous submersion for this probe as it will affect its readings after extended use.
Sorry in advance for my stupid question :) I wanna use a MKR that can deliver 5V (from my understanding), but the analaog pin of the MKR can't receive more than 3.3V. So my question, can i use this probe directly ? Or the analog output can blowup my pin ? :) Not sur if i'm very clear :s
JaneYu Hi,
The measurement range of the sensor is -2.2v~2.2v. But I'm not sure if this value will exceed 3.3v or not. As far as I know, applying the volatge higher than 3.3v to I/O of the MKR could damage the board. So I suggest don't use this module on the 3.3v system.
Is there any description of the threads/coupler used? I'm looking to use this "in line" and would be looking for a mating plumbing fitting.
JaneYu I am looking for the thread description (size and pitch). Did you have any luck with this?
good morning
we are interested in your control of ORP but it is not very clear to us if the kit comes with an arduino board and programming ready to work.
I await answer thanks.
JaneYu Hi,
There is no board in the kit, just ORP probe, ORP probe circuit board, and analog cable.
Hello, is there any way to make this ORP sensor working with a 3.3V supply?? I want to use it with an Arduino Zero that is delivering only 3.3V for a low consumption... I guess data will be incorrect if I try it, but just want to be sure that it's actually not possible. Thanks
JaneYu When you take two ORP or pH readings from arduino SD card , can you tell which data is meant to measure or invalidate one(like you are changing sample, a reading may when electorde is not connected)? thanks for your help.
JaneYu 
