this conductivity meter how much time can be stay in a solution that contains sodium? i need obtain data from 3 monts, 24 hrs day. can hold out that long submerged ??
JaneYu 2015-01-23 02:23:56 42 Views311 Replies this conductivity meter how much time can be stay in a solution that contains sodium? i need obtain data from 3 monts, 24 hrs day. can hold out that long submerged ??
hello, for the hydrophonic nutrient tank, I will use ec and ph meters. I read that an isolator should be used for them to read at the same time.
Is there any need for an isolator if they read one by one?
For example, it will read ec for 1 minute, then the relay will close the ec circuit and read ph after for 1 minute.
JaneYu If the EC sensor is completely de-energised then the sensor will not emit high frequency electrical signals into the water, and then the power supply to the pH sensor will not be disturbed.
So we think this solution is feasible.
Can this be used on microbit?
Is there any program that can be used on microbit?
If there is a program available, I would be very grateful.
JaneYu Yes, this one could be used with the MicroBit.
And we only provide the Mind+ Blocks as well:
https://uploads.disquscdn.c...
where can i find library of this sensor for proteus?
JaneYu Unfortunately, we only have sample code for ESP32 or Arduino, and do not have sample code for other controllers.
10~20000us/cm Low range corresponds to DFR0300 (K=1) Normal concentration, e.g. tap water.
10-100mS/cm High range corresponds to DFR0300-H (K=10) High concentration, e.g. seawater
JaneYu Are both the EC meter and the pH meter from the gravity line compatible with esp-idf? I mean, regarding libraries and some ease of use that are present in the Arduino IDE, I would like to use them in the esp-idf environment without too much headache if possible
JaneYu hi, can you give me an answer about what is the coverage area of that sensor?
JaneYu The coverage of this type of sensor is only in the vicinity of the sensor probe. The sensor can be regarded as an ideal point, and the sensor can only detect a point near the probe
I would like to know if you provide technical advice regarding the use of the sensor.
And how do you provide this advice, through what means can we communicate with you?
JaneYu Hello. I understand that this sensor can't be used for long periods of
time, but can I measure conductivity over an 8-hour period? What is the
longest it can be in water?
Also, can it measure conductivity in water that is changing temperature? Thanks!
JaneYu Hello, due to individual differences in probes. We are not able to give a maximum continuous measurement time.
However, according to feedback from other users, this product has had problems with abnormal values after 1 week of continuous operation in actual testing. So we think 8 hours of measurement is OK.
However, we recommend that you disconnect your controller and EC sensor after 8 hours.
Also, we have built-in temperature compensation in the library file for this sensor.
Please refer to the sample code in our wiki, all you need to do is to add your temperature reading function to the readTemperature() function.
For temperature sensor, we recommend you to use DS18B20.
DS18B20:
https://www.dfrobot.com/pro...
Hello. I understand that this sensor can't be used for long periods of time, but can I measure conductivity over an 8-hour period? What is the longest it can be in water? Thanks!
JaneYu I already contacted them, the point is that they don't have the material I need!
I need this material, Meter V2 (K=1), they have the "K=10", the "K=1" works for me, that's why I need this "K=1".
To send it to Lima - Peru, how much would it cost me everything, the equipment and the shipping cost!
I am looking forward to your response.
JaneYu This product is currently out of stock on our official website and is expected to arrive in early December.
At the same time, you can also pay attention to the arrival time of our distributors.
If you place an order from our official website when the EC sensor(K=1) is arrival, you will pay an estimated DHL shipping fee of US$49.
Good afternoon. I want to buy this product, I need to know if they have a distributor in the city of Lima - Peru.
Or if they send this product to the city of Lima or any part of Peru.
I await your response as soon as possible. Thank you.
JaneYu buenas tardes. Deseo comprar este producto, necesito saber si tienen algun distribuidor en la ciudad de Lima - Peru.
O si envian este producto a la ciudad de Lima o cualquier parte de Peru.
Espero su respuesta lo antes posible. Gracias.
JaneYu Please use it together with the ADS module. For sample tutorials, please refer to: https://github.com/DFRobot/...
ADS module: https://www.dfrobot.com/pro...
Raspberry Pi is a common master control board which is powerful in its functions, but the I/O pins of Raspberry Pi can read digital signals only, what's more, only through an external analog-to-digital conversion (ADC) module can it read signals of analog sensor or device, it is not convenient to use.This module uses 16-bit ADC chip ADS1115, supports 3.3 ~ 5V wide voltage power supply. The chip has a precision reference voltage and programmable gain adjustment (PGA), therefore, accurate acquisition and conversion can be performed for both weak and highly variable signals. So it is also applicable to all types of applications that the main control board needs to accurately collect the analog signals.
JaneYu Sorry, this module is not sold separately. The modules of EC sensor and TDS sensor cannot be used interchangeably.
JaneYu Hi. Just got this one, and I measure 80ms int the 12,88 ms solutiuon. What might be wrong? just for fun, I also measured 11kohm at the connectior in the same sollution.
JaneYu Hi, I have some questions about the Sensor Probe:
* In what type of liquid should the probe be stored when not in use?
* How long should the probe remain in the solution that needs EC measurement to have stable readings?
JaneYu Where can I purchase additional industrial grade probe for this product? I would like to replace the probe for use of 24/7.
JaneYu Where can I purchase additional industrial grade probe suit for this probuct?
JaneYu Hi DFRobot,
I did the EEPROM and still the same result. EC still 0.
Voltage from 0 to 200 after inserting into 1413 solution.
Please advise.
https://uploads.disquscdn.c...
JaneYu Hello, I have this probe and intend do use it with arduino Due, as its not supporting the included library can someone help with a code?
JaneYu Sorry, there is no test record for arduino due. You can ask for help in the forum: https://www.dfrobot.com/forum
