Gravity Analog pH Sensor Meter Kit V2

The analog pH meter V2 from DFRobot measures the pH value of water and solutions, for example in aquariums, aquaponics, hydroponics and water testing. The signal converter board runs on 3.3 V to 5.5 V and outputs an analog voltage of 0 V to 3 V. The library calibrates with two buffer solutions pH 4.0 and 7.0, which it recognises by itself.

Note: DFRobot intends this kit with laboratory probe for measurements in the laboratory; with long measurements the probe drifts. For continuous measurement, there is the version with industrial probe: Gravity Analog pH Sensor Meter Pro Kit V2.

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:

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

Features:

• Two-point calibration with pH 4.0 and 7.0
• Hardware-filtered output signal with low noise
• Probe with BNC plug, board with Gravity connector
• Voltage regulator on the board, for 3.3 V and 5 V microcontrollers
• Calibrate about monthly depending on use, weekly with frequent use, with fresh buffer solution

Application Examples:

• Aquariums and aquaponics
• Hydroponics
• Monitoring water quality

Documentation:

• Wiki DFRobot
• Arduino library DFRobot_PH (GitHub)

Technical Data:

• Board supply voltage: 3.3 V to 5.5 V DC
• Board output voltage: 0 V to 3.0 V
• Board probe connector: BNC
• Board signal connector: PH2.0-3P
• Measurement accuracy: ±0.1 at 25 °C
• Board dimensions: 42 × 32 mm
• Probe: laboratory grade
• Probe range: pH 0 to 14
• Probe temperature range: 5 °C to 60 °C
• Probe zero point: 7 ± 0.5
• Probe response time: < 2 min
• Probe internal resistance: < 250 MΩ
• Probe service life: > 0.5 years, depending on use
• Probe cable length: 100 cm

Scope of Delivery:

• 1× pH probe (laboratory grade)
• 1× pH signal converter board
• 1× Analog Gravity sensor cable
• 2× pH standard buffer solution 4.0
• 2× pH standard buffer solution 7.0
• 2× Waterproof seal
• 1× Screw cap for BNC plug
• 4× Nylon standoff M3 × 10
• 8× Screw M3 × 5