Wireless oxygen gas sensor

The CMA wireless oxygen gas sensor measures the gaseous oxygen concentration in the range of 0 to 25%. It uses optical technology based on luminescence.
The sensor is equipped with an OLED color display that shows sensor information and measured values. This makes the sensor suitable for use as a standalone measuring instrument.

This wireless oxygen gas sensor can be used wirelessly via Bluetooth or wired via USB with the Coach 7 or Coach 7 lite programs/apps on computers (Windows and Mac), Chromebooks, and mobile devices (Android and iOS).
The sensor is designed exclusively for measuring gaseous oxygen concentrations, not for measuring O2 in liquids. Never insert the sensor tube directly into a liquid.
It may take some time for the O2 sensor measurement to stabilize because the gas door must diffuse through a membrane filter into the sensor probe.

Technical specifications:

• Measuring range: 0 .. 25% O2
• Resolution: 0,01%
• Warrantee: 24 months
• OLED display: 0.96” 128 x 64px
• Response time: < 30 seconds to detect and respond to 90% of the actual change in oxygen levels
• Maximal sampling rate: 1 Hz
• Battery life: 12h when fully charged (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 Product manual.

Suggested biology and chemistry experiments:

• Monitoring oxygen levels in different environments outdoor and indoor (classroom)
• Monitoring changes in oxygen concentration during photosynthesis and respiration of plants
• Monitoring changes in oxygen concentration respiration of animals, insects, or germinating seeds
• Monitoring consumption of oxygen by yeast during respiration of sugars
• Measuring oxygen level during combustion e.g. burning a candle in a closed jar
• Measuring oxygen level in exhaled air