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This Grove O2 sensor is an excellent oxygen level detector and analyzer. It can measure O2 concentration within a range of 0 to 25% Vol and the max detecting concentration is 30% Vol.
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We've released the Seeed Gas Sensor Selection Guide, it will help you choose the gas sensor that best suits your needs.
Grove - Oxygen Sensor(ME2-O2-Ф20) is a kind of analog gas sensor to test the oxygen concentration in air, which is based on the principle of the electrochemical cell to the original work. You can know clearly the current oxygen concentration when you output voltage values proportional to the concentration of oxygen and refer to the oxygen concentration linear characteristic graph.
This Grove O2 sensor can be used to make simple oxygen level detector and analyzer. It can measure O2 concentration within a range of 0 to 25% Vol and the max detecting concentration is 30% Vol. It's very suitable for detecting oxygen concentrations in the Arduino environment project.
This sensor needs to be connected with the grove Pi+ which supports raspberry pi or base shield which supports Arduino Uno. You may also need Grove cable as a connector. Besides, there is a related product- Grove gas sensor(MQ2) who has a wiki about how to set up a gas sensor with Seeeduino. Similarly, you can begin your own project with this sensitive gas sensor and have fun!
The sensor value only reflects the approximated trend of gas concentration in a permissible error range, it DOES NOT represent the exact gas concentration. The detection of certain components in the air usually requires a more precise and costly instrument, which can not be done with a single gas sensor. If your projects aim to obtain the gas concentration at a very precise level, then we do not recommend this gas sensor.
Wide linearity range
Strong anti-interference ability
Extraordinary reliability and stability
This is the wiki page for this product, which will show you how to use the product, as well as details about the software and hardware.
Hi there, The sensor is current sensor. when it is in 20% O2 environment, the output current is around 120uA.
the circuit is amplified by 201. The resistor R7 is 100ohm. So the output voltage is around 120uA * 100 ohm * 201 =2.4V. I supply the 5v to the VCC, i use the multi digital meter to measure the signal pin and it is around 2.4v. thanks.
what is the range
The range of detecting is 0% to 25%.
What are the voltage & current requirements?
The input voltage of this product is 5v, and as for current :"Current Limit Circuit Built-in"
Hi there~ The O2 sensor needs about 20-30 minutes to preheat, and right now it is noly compatible with Arduino. Please tell us more detail, so that we can help you.If you can take a picture or a screenshot of the data will be better. You can email us via # email@example.com # Regards.
Yes, we support delivery to Malaysia,shipping time depend on the logistic mode, After adding all your items to the shopping cart, in the checkout step, please fill in your shipping address, the system will calculate the accurate shipping fee via different shipping options before you pay the order.
Hi there~ You can send an email to ### firstname.lastname@example.org ### Regards
Hi~ Please follow the wiki. If still does not work,please email us and provide more detail , such as photos of your hardware connection and your log ,it will be helpful.The email address as folow.Regards
Hi there~ It is plated. Regards
Hi, there~yes, of course, Regards!
Hi there, we used 1 meter wire previously and it can read the sensor data correctly. But we do not test the up limit. thanks.
Hi Jeff, Please give a try this code. **https://github.com/SeeedDocument/forum_doc/raw/master/reg/Read_O2_value.zip** thanks.
Hi there, please send mail to email@example.com. thanks.
Hi there, please drop mail to firstname.lastname@example.org. thanks.
Hi there, you can not solder on the ME2-O2 pins, you can solder on the grove connector. we provide all the detail info on wiki. please let us know what else you need. thanks.
Yes, we support dilivery to Sri Lanka, it does not include import duties, you need to deal with import duties,please send email to email@example.com , they will help you deal with the sample.
According to the code, the concentration = Vout*100*0.21/2.
So do a simple math, 25%--2.38V 20%---1.90V 15%---1.42V
But this is just a theoretical value，cause the relation between concentration and voltage is not strictly linear.So the real value should be a little bit different
Hi there, Yes, it works, just connect the gnd and vcc, then connect the analog signal to any analog pins. thanks.
Hi there,Sorry, the correct current is 0.1~0.3mA.thanks.
Hi there,Sorry, the correct current is 0.1~0.3mA. thanks.
Hi there,Sorry, the correct current is 0.1~0.3mA. 130~200mA is wrong number. it is our mistake. thanks.