{"product_id":"gravity-analog-ph-sensor-meter-kit-v2","title":"DFRobot Gravity: Analog pH Sensor\/Meter Kit V2 | SEN0161-V2","description":"\u003ch2\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eGravity: Analog pH Sensor\/Meter Kit V2\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDFRobot Gravity: Analog pH meter V2 is specifically designed to measure the pH of the solution and reflect the acidity or alkalinity. It is commonly used in various applications such as aquaponics, aquaculture, and environmental water testing.\u003c\/p\u003e\n\u003cp\u003eAs an upgraded version of \u003ca href=\"https:\/\/www.makerlab-electronics.com\/product\/gravity-analog-ph-sensor-meter-kit-for-arduino\/\" rel=\"noopener noreferrer\" target=\"_blank\"\u003epH meter V1\u003c\/a\u003e, this product greatly improves the precision and user experience. The onboard voltage regulator chip supports the wide voltage supply of 3.3~5.5V, which is compatible with 5V and 3.3V main control board. The output signal filtered by hardware has low jitter. The software library adopts the two-point calibration method, and can automatically identify two standard buffer solutions (4.0 and 7.0), so simple and convenient.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe sensor can be easily connected to most popular microcontrollers  (such as \u003c\/span\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/topic-277.html\" target=\"_blank\"\u003eArduino\u003c\/a\u003e\u003cspan\u003e), with its Arduino library, you can quickly build a pH meter, plug and play. DFRobot provides a variety of \u003c\/span\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/search-water%20quality.html\" target=\"_blank\"\u003ewater quality ph analog sensor products\u003c\/a\u003e\u003cspan\u003e, uniform size, and interface, not only meeting the needs of various water quality measuring  but are also suitable for the DIY multi-parameter water quality tester.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe pH is a value that measures the acidity or alkalinity of the solution. It is also called the hydrogen ion concentration index. The pH is a scale of hydrogen ion activity in solution. The pH has a wide range of uses in medicine, chemistry, and agriculture. Usually, the pH is a number between 0 to 14. Under the thermodynamic standard conditions, pH=7, which means the solution is neutral; pH\u0026lt;7, which means the solution is acidic; pH\u0026gt;7, which means the solution is alkaline.\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0531\/3419\/6927\/files\/SEN0161-V2-Arduino_20Connection_20Diagram.jpg\" alt=\"SEN0161-V2-Arduino Connection Diagram\" width=\"581\" height=\"480\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ffffff;\"\u003eAttention?\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e\u003cstrong\u003eAttention: \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e1. The BNC connector and the signal conversion board must be kept dry and clean, otherwise, it will affect the input impedance, resulting in an inaccurate measurement. If it is damp, it needs to be dried.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2. The signal conversion board cannot be directly placed on a wet or semiconductor surface, otherwise, it will affect the input impedance, resulting in an inaccurate measurement. It is recommended to use the nylon pillar to fix the signal conversion board, and allow a certain distance between the signal conversion board and the surface.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e3. The sensitive glass bubble in the head of the pH probe should avoid touching the hard material. Any damage or scratches will cause the electrode to fail.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e4. After completing the measurement, disconnect the pH probe from the signal conversion board. The ph analog sensor probe should not be connected to the signal conversion board without the power supply for a long time.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e5. The bottle cap of the probe contains protective liquid (3.3mol\/L KCL). Even if the bottle cap is screwed tightly, some protective liquid may still leak around the bottle cap, forming white crystals. But as long as there is still protective liquid in the bottle cap, it will not affect the life and accuracy of the probe. So please use it with confidence. It is recommended that the white crystals be poured back into the protective liquid in the bottle cap.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3.3~5.5V wide voltage input\u003c\/li\u003e\n\u003cli\u003eHardware filtered output signal, low jitter\u003c\/li\u003e\n\u003cli\u003eGravity connector and BNC connector, plug and play, no welding\u003c\/li\u003e\n\u003cli\u003eSoftware library supports two-point calibration, and automatically identifies standard buffer solution\u003c\/li\u003e\n\u003cli\u003eUniform size and connector, convenient for the design of mechanical structures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Conversion Board (Transmitter) V2\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eSupply Voltage: 3.3~5.5V\u003c\/li\u003e\n\u003cli\u003eOutput Voltage: 0~3.0V\u003c\/li\u003e\n\u003cli\u003eProbe Connector: BNC\u003c\/li\u003e\n\u003cli\u003eSignal Connector: PH2.0-3P\u003c\/li\u003e\n\u003cli\u003eMeasurement Accuracy: ±0.1@25?\u003c\/li\u003e\n\u003cli\u003eDimension: 42mm*32mm\/1.66*1.26in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH Probe\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eProbe Type: Laboratory Grade\u003c\/li\u003e\n\u003cli\u003eDetection Range: 0~14\u003c\/li\u003e\n\u003cli\u003eTemperature Range: 5~60°C\u003c\/li\u003e\n\u003cli\u003eZero Point: 7±0.5\u003c\/li\u003e\n\u003cli\u003eResponse Time: \u0026lt;2min\u003c\/li\u003e\n\u003cli\u003eInternal Resistance: \u0026lt;250M?\u003c\/li\u003e\n\u003cli\u003eProbe Life: \u0026gt;0.5 year (depending on frequency of use)\u003c\/li\u003e\n\u003cli\u003eCable Length: 100cm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eDocuments:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/wiki\/index.php\/Gravity:_Analog_pH_Sensor\/Meter_Kit_V2_SKU:SEN0161-V2\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eProduct wiki\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/wiki\/index.php\/Gravity:_Analog_pH_Sensor\/Meter_Kit_V2_SKU:SEN0161-V2#More_Documents\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eMore Documents\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003ePart List:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003epH Probe(Laboratory Grade)  x1\u003c\/li\u003e\n\u003cli\u003epH Signal Conversion Board x1\u003c\/li\u003e\n\u003cli\u003eGravity Analog Sensor Cable x1\u003c\/li\u003e\n\u003cli\u003epH Standard Buffer Solution 4.0 x2\u003c\/li\u003e\n\u003cli\u003epH Standard Buffer Solution 7.0 x2\u003c\/li\u003e\n\u003cli\u003eWaterproof Gasket x2\u003c\/li\u003e\n\u003cli\u003eScrew Cap for BNC Connector x1\u003c\/li\u003e\n\u003cli\u003eM3 * 10 nylon pillar x4\u003c\/li\u003e\n\u003cli\u003eM3 * 5 screws x8\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":42292836925631,"sku":"MLE00753","price":2799.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0531\/3419\/6927\/files\/MLE00753.jpg?v=1748918232","url":"https:\/\/makerlab.ph\/products\/gravity-analog-ph-sensor-meter-kit-v2","provider":"Makerlab PH","version":"1.0","type":"link"}