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PH0-14 Value Detect Sensor Module + PH Electrode Probe BNC For Arduino

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$ 14 .99 $14.99

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  • Response time:≤5S;Settling Time:≤60S;Component Power:≤0.5W;Detectable concentration range: PH0-14;Module Size: 42mm×32mm×20mm;Output: analog voltage signal output;With 4pcs M3 Mounting Holes
  • Getting the voltage varies on what you're using. The PH for this sensor is not at 0v for a PH7 it's around 2.51v from the multi-meter and PH4 at 3.03. If you calculate the step, 2.51-3.03 =-0.52. The difference between ph4.01 and PH7 is 2.99.
  • If you're using a Particle product like the Photon or Argon, be aware of a bug. It's a hardware issue with the analog ports fluctuating a ghost voltage. This fluctuation is enough at these low voltages reading to make your ph sway by .7 or more. To fix this, you'll need to add a 0.1uF cap between the analog port your using and ground.
  • This PH electrode probe must be calibrated with standard buffer solution before each use, and the electrode probe cannot be tested continuously for a long time, which will shorten its life. There are two trimmers on the circuit board. One of them is for offset adjustment (closest to BNC connector) accomplished by removing the Ph probe and shorting the BNC connector with a wire. The other trimmer is an upper limit threshold for the digital output pin.


Overview:
PH0-14 Value Detect Sensor Module
Features:
Heating voltage: 5 ± 0.2V (AC DC)
Working current: 5-10mA
Detectable concentration range: PH0-14
Detection Temperature range: 0-80 ℃
Response time:≤5S
Settling Time:≤60S
Component Power:≤0.5W
Working temperature:-10-50 ℃ (nominal temperature 20 ℃)
Humidity: 95% RH (nominal humidity 65% RH)
Module Size: 42mm × 32mm × 20mm
Output:analog voltage signal output
With 4pcs M3 Mounting Holes
Note:
The color of item might be slightly different from the picture shown, which mainly lies in different light effect and computer monitor. Please give us your understanding. Thank you!
PH Electrode Probe BNC For Arduino:
The PH electrode has a single cylinder that allows direct connection to the input terminal of a PH meter, controller, or any PH device which has a BNC input terminal.
The PH electrode probe is accurate and reliable that can gives almost instantaneous readings.
Features:
PH range: 0-14 PH
Temperature range: 0-80℃
Zero-point: 7 ± 0.25PH
Alkali Error: ≤15 mv
Theoretical Percentage Slope: ≧98%
Internal Resistance: ≦250MΩ
Response Time: ≦1min
Operating Temperature: 0-60℃
Terminal Blocks: BNC plug
BNC Connector suitable for most PH meter and controller.
Suitable for wide range of application: Aquariums, Hydroponics, Laboratory etc.
Package Includes:
1pcs Liquid PH0-14 Value Detect Test Sensor Module
1pcs PH Electrode Probe Hydroponic Sensor BNC Interface
Note:
We will repackage this item to reduce shipping weight paper and bag waste. We guaranty the item will be well treated and protected. Let's protect the environment together!
Thank you for your understanding!


Woshan Srimal
Reviewed in the United States on May 3, 2022
I tried this sensor in many ways. I gives wired results. As an example, I calibrated this sensor for drinking water around PH7 then put the sensor in lime juice It reads PH10. Fedup with the sensor. Documentation is also not clear.
Alex G
Reviewed in the United States on February 6, 2021
I wonder things, such as ash or bad rain, wouldst alter the water herein, that lieth await of measure. The "sensors", purchased from those of yonder great rainforest, have arrived.Doeth having so much waiste change our waters in ways we cannot imagine, yet may still divine?Valuing my fish and their health perhaps more than I do you and yours, reader, I shall not at mine own hand test these hypotheses. I shall defer to expert authority. Yet I would still measure, and have a little bird tell me in mine ear when such measures ring warning.
jblues
Reviewed in the United States on February 22, 2021
Works well. I am using it with ESP Home. You need a potentiometer if you are going to do that. Also you will need to use the ADC code module and pin A0. The Pot probably causes the accuracy to drop some, but it fits my need in my hydroponic system.
amazonuser
Reviewed in the United States on January 10, 2021
I'm using this probe in a hydroponic system with a Raspberry Pi and an Adafruit ADS-1015 ADC. Setup was quick and easy, and the device functions more or less as expected. I calibrated the system using linear regression on Atlas Scientific reference solutions at pH 4.0, 7.0, and 10.0.My code to read pH get samples from this device 50 times and returns the median value. I repeat this three times and take the mean of medians and round to the nearest tenth of a pH. One would expect that the pH value would be pretty stable at this scale with this method, but on subsequent recordings I see values +/- 0.2 pH. So, this has been useful for getting a general sense of solution pH but I would not recommend it for precise monitoring.Also, note that this device is NOT electrically isolated. This has caused headaches for me as the device works as expected in small samples, but when the probe is added to a solution containing electrical pumps, temperature sensors, etc, the pH is thrown off by about 2 pH.
Stewarts
Reviewed in the United States on April 24, 2020
They are claiming that the slope percentage is +-98%Getting the voltage varies on what you're using Particle photon has a 12-bit ADC with 8 channels input voltages and between 0 and 3.3 volts into integer values between 0 and 4095. So I use voltage = (pinvoltage/ 4095) * 3.3. The PH for this sensor is not at 0v for a PH7 it's around 2.51v from my multi-meter and PH4 at 3.03. If you calculate my step, 2.51-3.03 =-0.52. The difference between ph4.01 and PH7 is 2.99. That's .052/2.99 = 0.173916... That is the Step. So, 7+ ((2.51- voltage)/0.173916) in other words (PH(7) + ((Voltage@PH7- voltage from pin) / step))this should give you the PH. I run 10 samples and get the average to clean it up a bit. The accuracy of my unit swings around a PH of .05, which is higher than advertised .03. I'm a certified horticultural specialist by hobby and a software Engineer by trade. I've designed and developed custom hydroponics control system for large cannabis growers. I wouldn't use this for any growing operations without redundancies and fault tolerance in place. I'll monitor it over time. Just a heads up; If you're using a Particle product like the Photon or Argon, be aware of a bug that will drive you nuts. It's a hardware issue with the analog ports fluctuating a ghost voltage. This fluctuation is enough at these low voltage reading to make your ph sway by .7 or more. To fix this, you'll need to add a 0.1uF cap between the analog port your using and ground. This will clean up the signal. I've got it tweaked in par with a bluelab pH meter. Now you can control your own PH dosing system at a fraction of the cost with a ton more control.
Brandon Utter
Reviewed in the United States on November 9, 2019
There are decent tutorials available on how to calibrate it for use with arduino ide. It is accurate and worked for my project of a diy hydroponic pH adjuster. This probe with some peristaltic pumps, a relay, and an arduino uno are now adjusting my reservoir pH. I will probably purchase it again for use in other projects.
DanH
Reviewed in the United States on November 29, 2019
I found it very difficult to get it working with the ADC and a Raspberry Pi. Maybe it is the 5V or other issues. I assumed it would work but was just frustrating enough I changed my approach. I would have like some better instructions.
themadsailor
Reviewed in the United States on November 14, 2019
Great and easy to use PH sensor. The response time is almost instantaneous even from lower limit to upper limit. There are two trimmers on the circuit board. One of them is for offset adjustment (closest to BNC connector) accomplished by removing the Ph probe and shorting the BNC connector with a wire. The other trimmer is an upper limit threshold for the digital output pin.