Gravity Analog ORP Sensor for Arduino

This Gravity sensor from DFRobot measures the oxidation-reduction potential (ORP) of water, for example in a pool, an aquarium or for water testing. The probe with BNC plug connects to the signal board, which outputs an analog signal for a 5 V microcontroller such as the Arduino UNO. The measuring range is -2000 mV to +2000 mV.

Note: An ORP sensor measures the oxidation-reduction potential in mV and not the chlorine content in ppm like an amperometric chlorine sensor. An ORP standard solution or a comparison with chlorine test strips is suitable for checking the measurement.

Note: The connection cable can be converted to male pins with a Dupont cable M-M, so that it also fits an Arduino UNO.

Recommended Accessories:

• Dupont Cables M-M 10cm 20 Pieces
• Gravity 16Bit 4-Channel ADC Analog Digital Converter I2C ADS1115

Features:

• Measuring range -2000 mV to +2000 mV
• Probe with BNC plug
• Button for zero calibration, LED for power
• Gravity PH2.0 3-pin connector
• The protective cap of the probe contains 3.3 mol/l KCl solution; according to DFRobot, white crystals on the cap do not affect the probe

Application Examples:

• Monitoring pools and hot tubs
• Aquariums and aquaculture
• Hydroponics
• Water testing and chemistry lessons

Documentation:

• Wiki DFRobot SEN0165
• Schematic (PDF)
• Datasheet (PDF)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: SEN0165
• Supply voltage: 5.00 V
• Measuring range: -2000 mV to +2000 mV
• Accuracy: ±10 mV at 25 °C
• Response time: ≤ 20 s
• Temperature of medium: 5 °C to 70 °C
• Probe connector: BNC
• Signal connector: PH2.0 3-pin (GND, +, A)
• Board dimensions: 40 × 27 mm
• Weight: 168 g

Scope of Delivery:

• 1× ORP probe with BNC plug
• 1× ORP signal board
• 1× Gravity analog cable 3-pin