Apogee Instruments - MO-200: Oxygen Sensor with Handheld Meter

Brand: Apogee Instruments

The Apogee MO-200 pairs a 0 to 30 percent gaseous oxygen sensor with a handheld meter for instant spot checks of O2 in the root zone, sealed rooms, and compost. The sensor reads on a 2 m lead.

Oxygen is the overlooked variable in the root zone and in CO2-enriched sealed rooms; the MO-200 makes it easy to verify O2 levels where plants and microbes compete for it.

Key Features

• Measures 0 to 30 percent gaseous O2 with a linear voltage output
• Heated membrane option prevents condensation in soil, media, and compost
• Rugged polypropylene body, fully potted for long-term deployment in porous media
• Internal thermistor for temperature monitoring and signal correction
• Simple ambient-air calibration (atmosphere is 20.95 percent O2)
• Built and calibrated in Logan, Utah; NIST-traceable, made in the USA, and backed by an industry-leading 4-year warranty.

Why Choose This Model

The MO-200 is the simplest way to spot-check gaseous oxygen without wiring a sensor into a datalogger.

Ideal Applications

• Root-zone and substrate O2 spot checks
• Sealed, CO2-enriched grow rooms
• Compost and respiration studies