Forum >Replies by Osama.Choudhry
Replies （1）
- Topic: EC Voltage is not stableYou Reply:
I've encountered several persistent challenges that have hindered the functionality of DFRobot Gravity: analog electrical conductivity sensor/meter(K=10), and despite exhaustive attempts to troubleshoot, I'm yet to find a resolution.
Here are the specific issues I've been facing:
Inconsistent Voltage Readings and Initialization Discrepancy: Upon connecting the sensor, including the temperature sensor for compensation, I observed unstable voltage values. Additionally, while the product specifies a K-value of 10, the code seems to initialize with a K-value of 2. This discrepancy has raised confusion and led to instability in readings. I would greatly appreciate clarification and guidance on resolving this initialization issue.
Calibration Command Glitch: The calibration process, which ideally should respond to the designated commands of 'enterec,' 'calec,' and 'exitec,' has been encountering an unexpected glitch. Instead of responding to the designated commands as specified in the documentation, the sensor seems to require 'enterec ->,' 'calec ->,' and 'exitec ->' with two spaces after 'calec.' This inconsistency has been quite cumbersome and I seek guidance to resolve this irregularity.
Unsuccessful Calibration with Buffer Solution: Despite attempts to calibrate the device using the recommended buffer solution of 12.88ms/cm, the readings remain unstable with a significant voltage range (4.88 to 24 volts). Even after multiple attempts at calibration using two of the provided solutions, I've been unable to achieve calibration with the following error.
Any help regarding these matters will be appreciated greatly.
Thanks.