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Gravity: Analog Electrical Conductivity Sensor / Meter(K=10)
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Gravity: Analog Electrical Conductivity Sensor / Meter(K=10) OverviewDFRobot Gravity: analog electrical conductivity sensor/meter(K=10) is particularly used ...
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Gravity: Analog Electrical Conductivity Sensor / Meter(K=10) Overview
DFRobot Gravity: analog electrical conductivity sensor/meter(K=10) is particularly used to measure the high electrical conductivity liquid, such as seawater, concentrated brine, etc. The measurement range is up to 100ms/cm. This product is suitable for the water quality application of mariculture, for example, marine fisheries, marine aquariums. You may also check Liquid Sensor Selection Guide to get better familiar with our liquid sensor series.It supports 3~5v wide voltage input and is compatible with 5V and 3.3V main control boards, such as Arduino and Raspberry Pi. The excitation source adopts an AC signal, which effectively reduces the polarization effect, improves the precision, and prolongs the life of the probe; The software library uses a single-point calibration method, and can automatically identify a standard buffer solution, so simple and convenient.
With this product, main control board (such as Arduino), and the software library, you can quickly build an electrical conductivity meter, plug, and play, no soldering required, which provides a set of plug-and-play conductivity measurement solutions for makers.
DFRobot provides a variety of water quality sensor products, uniform size, and interface, not only meet the needs of various water quality testing but also suitable for the DIY of multi-parameter water quality tester.
Tips:
This product does not contain a temperature sensor. In order to ensure the measurement accuracy, it is strongly recommended to add a temperature sensor to measure the temperature and achieve automatic temperature compensation. DS18B20 waterproof temperature sensor can be used.
Arduino Connection Diagram
Attention:
1.The probe is a laboratory-grade probe. Do not immerse in liquid for a long time. Otherwise, this will shorten the life of the probe.
2.Platinum black layer is attached to the surface of the sheet metal in the probe. It should avoid any object touching it. It can only be washed with distilled water, otherwise, the platinum black layer will be damaged, resulting in an inaccurate measurement.
Features
- 3.0~5.0V wide voltage input, 0~3.2V output voltage, which is compatible with 5V and 3.3V mainboard
- AC excitation source, effectively reduce polarization
- Gravity connector and BNC connector, plug and play, no welding
- Software library supports single-point calibration, and automatically identifies standard buffer solution, integrates temperature compensation algorithm
- Uniform size and connector , convenient for the design of mechanical structures
Specification
Gravity: Analog Electrical Conductivity Sensor / Meter(K=10) TECH SPECS
Signal Conversion Board- Supply Voltage: 3.0~5.0V
- Output Voltage: 0~3.2V
- Probe Connector: BNC
- Signal Connector: PH2.0-3Pin
- Measurement Accuracy: ±5% F.S.
- Board size: 42mm*32mm/1.65in*1.26in
Electrical Conductivity Probe
- Probe Type: Laboratory Grade
- Cell Constant: 10±2
- Support Detection Range: 10~100ms/cm
- Temperature Range: 0~40°C
- Probe Life: >0.5 years (Actual life is related to the frequency of use and scene)
- Cable Length: 100±2cm
Documents
Shipping List
- Electrical Conductivity Probe (K=10, Laboratory Grade) x1
- Signal Conversion Board x1
- Standard Buffer Solution 12.88ms/cm x4
- Gravity Analog Sensor Cable x1
- Waterproof Gasket x2
- Screw Cap for BNC Connector x1
- M3 * 10 nylon pillar x4
- M3 * 5 screws x8
Jargon buster
Plain-language definitions for the technical terms used above.
- AC excitation
- AC excitation means the probe is driven with an alternating electrical signal rather than a steady DC signal. This matters for conductivity probes because it helps reduce electrode polarisation, improving measurement stability and probe life.
- BNC connector
- A twist-lock connector commonly used for probes, test equipment, and shielded signal cables. For pH and conductivity sensors, a BNC connector makes it easier to attach or replace electrodes without soldering.
- cell constant
- The cell constant describes the geometry of a conductivity probe and is used to convert the electrical measurement into a conductivity value. A K=1 probe is suited to common water-quality ranges, so it helps you judge whether the probe matches the conductivity levels you expect to measure.
- DS18B20
- A common digital temperature sensor often sold in waterproof probe form. It matters here because the kit does not include temperature measurement, and a DS18B20 is the suggested add-on if your water readings need temperature context.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- Temperature compensation
- Temperature compensation means the sensor adjusts its readings to reduce errors caused by changes in water temperature. This matters for field monitoring because ponds, rivers, and tanks can vary in temperature throughout the day and across seasons.
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