{"title":"Gravity: Analog Spear Tip pH Sensor / Meter Kit (for Soil and Food Applications)","handle":"gravity-analog-spear-tip-ph-sensor-meter-kit-for-soil-and-food-applications","url":"/products/gravity-analog-spear-tip-ph-sensor-meter-kit-for-soil-and-food-applications","description":"The Gravity Spear Tip pH Sensor Kit is designed for measuring the pH of semi-solid materials such as wet soil, fruit, meat, and vegetables. The stainless steel spear tip protects the glass electrode and allows the probe to be pushed directly into soft materials — something standard pH probes cannot do without damage.\n\nThe kit includes a spear tip pH probe with BNC connector and a signal transmitter board with a Gravity interface, making it Arduino-compatible and easy to integrate into soil monitoring and food quality projects.\n\nKey Features\n\n\nSpear Tip Design – Stainless steel tip for direct insertion into semi-solid materials\n\npH Range – 0 to 10 pH with ±0.1 pH accuracy\n\nGravity Interface – Analogue output (0–4.0V) via 3-pin PH2.0 connector\n\nArduino Compatible – 5V input, plug-and-play with Gravity expansion shields\n\nBNC Connection – Standard BNC connector between probe and transmitter board\n\n\nSpecifications\n\n\nProbe Measuring Range – 0–10 pH\n\nProbe Accuracy – ±0.1 pH\n\nTransmitter Accuracy – <±0.2 pH (at 25°C)\n\nOperating Temperature – 5–60°C\n\nResponse Time – ≤2 min (in standard buffer solution)\n\nProbe Wire Length – 850 mm (including BNC connector)\n\nSalt Bridge Material – PTFE\n\nShell Material – POM (Polyoxymethylene)\n\nTransmitter Input – 5V\n\nTransmitter Output – 0–4.0V analogue\n\nTransmitter Dimensions – 43 × 32 mm\n\n\n\nWarning: The spear tip is sharp — handle with care. Do not measure hard solids, oily samples, high-viscosity materials, or samples with fine abrasive particles. The probe is a laboratory electrode not designed for prolonged immersion. Clean the probe carefully after each use. Not suitable for non-aqueous titration.\n\n\nIdeal For\n\nSoil pH measurement for gardening and agriculture\nFood quality testing (fruit, meat, vegetables)\nScience and chemistry experiments\nEnvironmental monitoring projects\n\n\nPackage Contents\n\n1× Spear tip pH probe (BNC connector)\n1× Signal transmitter board (Gravity interface)\n\n\nResources\n\nWiki documentation\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":8558,"title":"Default Title","sku":"DF-SEN0249","price":175.59,"on_sale":false,"in_stock":true,"available_quantity":33,"option1":"Default Title"}]}