The Wireless pH sensor W42 measures the degree of acidity/pH value of a solution in the range from 0 to 14 pH. The pH electrode is connected to the sensor box by means of a coax cable and a BNC connector.

The sensor can be used wirelessly via Bluetooth or wired via USB. The sensor is equipped with an OLED color display which shows some sensor information and the measured by the sensor values. This makes the sensor suitable to use as an independent measuring instrument.

The sensor can be used wirelessly via Bluetooth or wired via USB with the Coach or Coach Lite programs/apps on computers (Windows and Mac), Chromebooks and mobile devices (Android and iOS).

Technical Specifications

• Measuring Range: 0 … 14 pH
• Resolution: 0.001 pH
• Type Electrode: Sealed, gel-filled, epoxy body, Ag/AgCl
• Sensitivity: 0.06 V per pH unit
• Response Time: 90% of final reading in 1 second
• Temperature Range: 5 to 80°C
• Isopotential pH: pH 7 (point at which temperature has no effect on output)
• Maximal Sampling Rate: 100 Hz
• Display: OLED 0.96\” (128*64 px)
• Battery: Li-Poly Rechargeable Battery (3,7 V 2000 mAh)
• Battery Life: Approximately 13 hours (after full charge)
• Connection: Bluetooth 5, Low Energy (Mac, Android, iOS) Bluetooth 2.1, Classic (Windows) or USB-C 2.0

All specifications of the sensor are described it its User guide.

Suggested Experiments

The pH sensor can be used for various experiments such as:

• Measurements of the pH of different acids and bases,
• Acid-base titration experiments,
• Monitoring pH during chemical reactions,
• Investig