The Wireless Current sensor W08 is a general-purpose sensor to measure currents in AC and DC circuits in the range between -3 and +3 A. The sensor is equipped with two 4-mm banana plugs and two additional alligator clips are delivered with the sensor. The Current sensor should be placed in series with the circuit component through which the current will be measured. Currents in either direction can be measured.

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 wireless conductivity 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: Differential -3 … +3 A
• Resolution: 0.001 A
• Accuracy: ±0.3%
• Warrantee: 24 months
• Max. current protection: ± 5 A
• Max. Voltage: ± 15 V (protection until 30V)
• Resistance between inputs: 0.01 O / 2W
• Maximal sampling rate: 100 Hz wireless or 1 kHz via USB
• Battery life: 12h when full (rechargeable)
• 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

• Confirmation of the direct relation between conductivity and ion concentration in aqueous solutions. Concentration of unknown samples can be determined.
• Measuring characteristics of a light bulb and a diode.
• Measurement of internal resonance and electromagnetic field.
• Measurements in series and parallel electrical circuits.
• Together with a Voltage sensor, it can be used to explore the relationship between current and voltage in electrical circuits.