Gravity Analog pH Sensor Meter Pro Kit V2

The pH Meter Pro Kit V2 from DFRobot is built for continuous pH measurement, for example in hydroponics, aquaculture, aquariums and pools. The industrial probe with 5 m cable is designed for round-the-clock operation. The signal converter board V2 runs on 3.3 V to 5.5 V and outputs 0 V to 3 V. The DFRobot_PH library calibrates with two buffer solutions pH 4.0 and 7.0, which it recognises by itself.

Note: Buffer solutions for calibration are not included. For laboratory measurements, there is the kit with laboratory probe and buffer solutions: Gravity Analog pH Sensor Meter 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:

• Dupont Cables M-M 10cm 20 Pieces
• Gravity 16Bit 4-Channel ADC Analog Digital Converter I2C ADS1115
• Gravity DS18B20 Sensor Kit

Features:

• Industrial probe for round-the-clock measurement, service life over 0.5 years depending on water quality
• Signal converter board V2 with voltage regulator, for 3.3 V and 5 V microcontrollers
• Hardware-filtered output signal with low noise
• Two-point calibration with pH 4.0 and 7.0 via the library
• Keep the BNC plug and the board dry and clean, otherwise the measurement becomes inaccurate
• Do not place the board on wet or conductive surfaces, mount it with the nylon spacers
• Do not touch the glass membrane of the probe with hard objects
• After measuring, disconnect the probe from the board if the board is not powered

Application Examples:

• Hydroponics and aquaponics
• Aquaculture and aquariums
• Pools
• Continuous monitoring of water quality

Documentation:

• Wiki DFRobot SEN0169-V2
• Arduino library DFRobot_PH (GitHub)
• Example hydroponics with pH sensor and DS18B20 (DFRobot Wiki)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: SEN0169-V2
• Board supply voltage: 3.3 V to 5.5 V
• Board output voltage: 0 V to 3.0 V
• Board probe connector: BNC
• Board signal connector: PH2.0-3P (GND, VCC, A)
• Board measurement accuracy: ±0.1 at 25 °C
• Board dimensions: 42 × 32 mm
• Probe: industrial grade
• Probe measuring range: pH 0 to 14
• Probe temperature range: 0 °C to 60 °C
• Probe accuracy: ±0.1 pH at 25 °C
• Probe response time: < 1 min
• Probe internal resistance: < 250 MΩ
• Probe service life: > 0.5 years with round-the-clock measurement, depending on water quality
• Probe cable length: 5 m

Scope of Delivery:

• 1× pH probe (industrial grade)
• 1× pH signal converter board V2
• 1× Gravity analog cable
• 2× waterproof gasket
• 1× screw cap for BNC plug
• 4× nylon spacer M3 × 10
• 8× screw M3 × 5