difference between ph sensors

andresrtr 2017-11-15 03:45:43 2470 Views3 Replies
Hi, I have a question, why is the "Gravity: Analog pH Sensor / Meter Pro Kit for Arduino" sensor more expensive than the "Crowtail-PH Sensor" made in elecrow?

links:

"Gravity: Analog pH Sensor / Meter Pro Kit for Arduino": https://www.dfrobot.com/product-1110.html

"Crowtail- PH Sensor": https://www.elecrow.com/crowtail-ph-sensor.html

2017-11-16 15:49:51 I am not very clear about the detail, but as I know, the pro one is more resistant to the corrosion of the liquid, the difference is the material of the head robert.chen

2017-11-15 21:13:37 ok thanks you.
i have other question, Why does this sensor last longer?
Could you tell me the specific difference? andresrtr

2017-11-15 17:43:42 This analog pH sensor Pro Kit has a pro probe, which could be put in water for a long time, normal pH sensor can only measure pH of sample solution, this one could be put in water directly and you don't have to always calibrate it. robert.chen