> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Gravity: Analog Electrical Conductivity Sensor PRO (K=1) **Type:** Product page · **SKU:** SEN0451 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia) **Page:** https://core-electronics.com.au/gravity-analog-electrical-conductivity-sensor-pro-k-1.html ([markdown](https://core-electronics.com.au/gravity-analog-electrical-conductivity-sensor-pro-k-1.html.md)) This Gravity: Analog Electrical Conductivity Sensor PRO (K=1) has greatly improved the probe endurance, which allows it to offer 24/7 service for... ## Pricing - **Price:** $319.95 (inc GST) — $290.86 AUD, exc GST - **Quantity discounts:** 6+ $276.32 (exc GST) · 12+ $264.68 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 24 and Aug 28. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0451:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN0451:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description Conductivity is the reciprocal of an object's resistivity. It represents a material’s ability to pass a current. In a liquid, conductivity is a measure of a solution’s ability to conduct electricity and can reflect the amount of dissolved or salinity of a water source, so it’s an important parameter in water quality monitoring. **DFRobot Gravity: Analog Electrical Conductivity Sensor PRO(K=1) is specially used to measure the conductivity in aqueous solutions, and then to evaluate the water quality.** These conductivity sensors are often used in hydroponics, aquaculture, environmental water detection, and other fields. As an upgraded version of the analog electrical conductivity meter, this pro version has **greatly improved probe endurance**, which can be used in 24/7 conductivity monitoring. Besides, **the integrated PT1000 platinum resistance thermometer makes it easier to measure the compensated temperature data**. It supports 3-5V wide voltage input and is compatible with 5V and 3.3V main control boards. The output signal is filtered by hardware and has low jitter. The excitation source adopts an AC signal, which effectively reduces the polarization effect, improves the precision, and prolongs the life of the probe. The supported library comes with a calibration program to allow you to get started easily. Besides, there are practical items in the package, like calibration solution, accessory kit, waterproof connector, etc., which can help you quickly build a conductivity monitoring platform. With this product, a controller board (such as Arduino), and the software library, you can quickly build an electrical conductivity meter, plug-and-play, no solder required. DFRobot provides a variety of [water quality sensor](https://www.dfrobot.com/category-68.html) products with uniform sizes and interfaces, which not only meet the needs of various water quality testing but are also suitable for the DIY of multi-parameter water quality testers. This is an industrial-grade probe and can be immersed in liquid for a long time. If you want a conductivity probe with higher accuracy or larger range, please select the laboratory probe ([Gravity: Analog Electrical Conductivity Sensor /Meter V2 (K=1)](https://www.dfrobot.com/product-1123.html)). **![Electrical Conductivity Probe Pro Pinout](https://core-electronics.com.au/attachments/localcontent/1_20588fd0f38.jpg)** **Electrical Conductivity Probe Pro Pinout** ### Features 10. Easier to measure the compensated temperature data 11. Plug-and-play, no solder required ### Applications 13. Hydroponics 14. Aquaculture 15. Environmental water detection ### Specification 17. Supply Voltage: 3.3-5.0V 18. Output Signal: 0-3V 19. Probe Type: Industrial Grade 20. Cell Constant: K=1 21. Temperature Detector: PT1000 platinum resistance thermometer 22. Maximum Range: 1-2200µs/cm 23. Practical Range: 100-2000µs/cm 24. Operating Temperature: 0 - 50°C (non-freezing) 25. Pressure Resistant: 0.5MPa 26. Waterproof Level: IP68 27. Cable Length: 5m **Documents**29. [Product wiki](https://wiki.dfrobot.com/SKU_SEN0451_Gravity_Analog_Electrical_Conductivity_Sensor_PRO_K_1) ### Parts List 31. Electrical Conductivity Probe x1 32. Electrical Conductivity Signal Conversion Board (Industrial Grade) x1 33. PT1000 RTD Signal Conversion Board x1 34. Gravity Sensor Cable x2 35. Waterproof Joint x1 36. Waterproof Aviation Connector x1 37. Electrical Conductivity Calibration Standard Solution 1413µs/cm x4 38. Nylon Pillar Screws Kit x1 ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0451-1.jpg)