Choosing the right Ntron oxygen analyzer starts with the required measuring range. The OC38, OC39 and OC40 are used for different oxygen concentrations, so the correct model depends on the process gas, normal oxygen level and the conditions being monitored. This article compares the three models and explains the supply support available for new installations and replacement orders.

Ntron OC38, OC39 and OC40 oxygen analyzers for industrial applications.
Model Comparison: OC38, OC39 and OC40
| Model | Oxygen range | Typical applications |
| OC38 | 0-1000 ppm trace oxygen | Inert atmosphere monitoring, nitrogen generators and 3D-printing chamber monitoring |
| OC39 | 0-25% O2 | General-purpose process gas monitoring and marine inert-gas systems |
| OC40 | 0-96% O2 | High-oxygen-concentration working conditions |
All three models use zirconia oxygen sensing technology. The range is designed for long sensor service life and low signal drift, with a robust mechanical design for straightforward field integration.
Where These Oxygen Analyzers Are Used
Ntron OC38, OC39 and OC40 analyzers are used in nitrogen generators, marine nitrogen plants, heat-treatment equipment, lithium-ion production, semiconductor processes and modified-atmosphere food packaging lines.
The OC38 is used for ppm-level trace oxygen monitoring. The OC39 is suitable for general process gas and marine inert-gas systems. The OC40 is specified for applications requiring measurement up to 96% oxygen. The analyzers are used in both new installations and replacement projects, so buyers often need fast confirmation of the correct model and dependable supply.

Supply support for Ntron OC38, OC39 and OC40 oxygen analyzers.
Sourcing and Supply Support
Demand for new installations and replacement units can create availability pressure, especially when production schedules or planned maintenance cannot wait. Our supply support for OC38, OC39 and OC40 covers the following areas.
Genuine original units: We supply genuine original Ntron units through direct supply channels, with complete documentation and no refurbished or substitute parts. This is suitable for export projects and site acceptance checks.
Stock availability: We maintain safety stock for these high-volume models to reduce dependence on long overseas lead times. Both small trial orders and large project orders are supported.
Competitive pricing: Scale-based sourcing helps remove multi-level markup and provides cost-effective purchasing options.
Technical assistance: We provide model selection guidance, parameter verification and application advice to help match the analyzer to the working conditions and reduce selection errors.
Global shipping support: We handle export-required documents for international orders.
How to Request a Quotation
To request pricing and supply details, please send the required model, measuring range, application and order quantity. If you are unsure which model fits your process, describe the process gas and expected oxygen range, and we can help confirm the most suitable option.
For OC38, OC39 or OC40 supply requirements, contact JIEXI Marine or send your inquiry to sales@fastmarine.cn.
Contact JIEXI for Ntron oxygen analyzer supply
Product applications and supply details in this article are based on the information provided for the Ntron OC38, OC39 and OC40 oxygen analyzer range.