Meaning- An oxygen Purity Meter(OPM 250) is used to measure the concentration or purity of oxygen in a given environment.
https://instrumentkart.com/product-detail/oxygen-purity-meter

Application- In industrial applications, oxygen purity meters play a crucial role in processes that rely on precise oxygen levels, such as welding, metal cutting, and chemical production. By monitoring and maintaining the desired oxygen concentration, these meters help ensure product quality, efficiency, and the safety of workers.

Features-

Sensor — O2 ( EC )
Resolution — 0.1%
Ranges — 0–100%
Response Time — T90 <15 sec with flow > 0 LPM
Display — In-built Graphics Display
Pressure — < 15 PSI
Auto Calibration — User Command for Zero Air Calibration
Battery — Rechargeable(lasts for 20 hours )

Buy industrial instruments at Instrumentkart
https://instrumentkart.com/