Oxygen Monitor for welding

PRO OX-100 Oxygen Weld Monitor

Calibration method depends on when your unit was purchased. Units sold prior to August 1, 2019 use Self-Calibration, which relies solely on ambient air as the reference point. Units sold from August 1, 2019 onward use 2-Point Calibration instead, referencing both ambient air (high point) and 99.999% Argon (low point) for a more precise calibration.

Known worldwide for combining advanced performance with an affordable price point, this oxygen monitor features a built-in pump and delivers resolution down to 0.01% (100 ppm) — precise enough for demanding purging and welding applications.

The PRO OX-100 is proudly manufactured in the USA at Aquasol® Corporation's ISO-certified factory and carries CE approval.

Data logging is one of its standout features: the unit captures real-time readings at 15-second intervals and can export up to 50 recorded data points directly to Microsoft® Excel or plain text files, giving operators a permanent, reviewable record.

It also includes a programmable, multi-language on-screen interface, with instructions available in English, Spanish, German, and Portuguese. Combined with support for multiple voltage and frequency configurations, this makes the PRO OX-100 one of the most versatile oxygen weld monitors available anywhere in the world.