Issue with SEN-0257 Water Pressure Sensor
Account cancelled 2019-07-03 01:24:01 1521 Views0 Replies Hi,
I have recently purchased a SEN0257 Water pressure sensor and I am wondering if they are wrong.
In the data sheet here: https://wiki.dfrobot.com/Gravity__Water ... U__SEN0257
It states that they can handle liquid/gas as a medium. However when I place 4bar of air pressure (measured with analog sensor) into the sensor, I get the reading around 6bar. Yes, I have callibrated it, I even checked voltage output of sensor with multimeter.
I wonder if the sensor works accurately with air. I then placed 2m of water in a pipe above the sensor and read 0.27 bar instead of 0.2 as should be the case. Could it be possible that I have a bad batch of sensors that are not calibrated correctly? Do the senors accurately measure air?
Thanks for the help!
I have recently purchased a SEN0257 Water pressure sensor and I am wondering if they are wrong.
In the data sheet here: https://wiki.dfrobot.com/Gravity__Water ... U__SEN0257
It states that they can handle liquid/gas as a medium. However when I place 4bar of air pressure (measured with analog sensor) into the sensor, I get the reading around 6bar. Yes, I have callibrated it, I even checked voltage output of sensor with multimeter.
I wonder if the sensor works accurately with air. I then placed 2m of water in a pipe above the sensor and read 0.27 bar instead of 0.2 as should be the case. Could it be possible that I have a bad batch of sensors that are not calibrated correctly? Do the senors accurately measure air?
Thanks for the help!
