WhatsApp : +88 01818929292 / +8801730296909
info@smmarineservice.com sohelbhuiyan1213@gmail.com arafatbhuiyan3657@gmail.com
WhatsApp : +88 01818929292 / +8801730296909
info@smmarineservice.com sohelbhuiyan1213@gmail.com arafatbhuiyan3657@gmail.com

NGK Oxygex Oxygen Analyzer – Complete Technical Guide, Maintenance, Troubleshooting, Calibration & Marine Combustion Monitoring System

Posted onJune 13, 2026

NGK Oxygex Oxygen Analyzer

Manufacturer

NGK Insulators Ltd.

Country of Origin

Japan

Product Type

Oxygen Analyzer (O₂ Analyzer)

Marine Application

Boiler Combustion Monitoring, Incinerator Control, Exhaust Gas Analysis & Oxygen Measurement Systems


Product Introduction

The NGK Oxygex Oxygen Analyzer is a precision oxygen measurement instrument designed for continuous monitoring of oxygen concentration in combustion and exhaust gas systems. Manufactured by NGK Japan, the analyzer is widely used on ships, power plants, boilers, incinerators, and industrial combustion systems where accurate oxygen measurement is essential for efficient operation.

Proper oxygen monitoring plays a critical role in fuel efficiency, combustion optimization, emission control, and machinery protection. Excess oxygen reduces fuel efficiency, while insufficient oxygen may result in incomplete combustion, soot formation, and excessive emissions.

The NGK Oxygex Analyzer provides accurate real-time oxygen measurement, helping engineers optimize combustion performance and reduce operating costs.

Original Product Image

The image above shows actual NGK Oxygex Oxygen Analyzer Display Units supplied by SM MARINE SERVICE™.


What Is an NGK Oxygex Oxygen Analyzer?

An oxygen analyzer is a specialized instrument that continuously measures oxygen concentration in gas streams.

The NGK Oxygex Analyzer is commonly used to monitor:

  • Boiler exhaust gases
  • Incinerator exhaust systems
  • Combustion air systems
  • Inert gas systems
  • Industrial flue gas applications

By continuously measuring oxygen concentration, operators can adjust fuel-air ratios and maintain optimum combustion conditions.

NGK Oxygen Analyzer Images

https://images.openai.com/static-rsc-4/vzdqcY_rZO1rNo5fuZ5lZbFh2fcxWVCYc25xO2EPHnkViq4mTI4x1QI6TCfc7DzqQst8vYxcQkj_4phGExTY280ChY7CsS-EMo5GNiM-Yql6q5_PswzxZNozxJOJhanbvvvfS7HB6N4YV-XLRBQvXIcYRXP8wfSmAVdsvq9gDy9K2Ivyck8B-iANkkCopYU5?purpose=fullsize
https://images.openai.com/static-rsc-4/NCV0zjYMMa3bn44nrsZTHvtKlbIa6pX8YGoGtvDqRn8p7hS-wqj-EcSdUd9Ceb8LksTFlY4ZGzBGwoh-ZolIwvOOS90NVf5jlwcHLfqUqQKBzr82mlbEfaXpzra7Vh1LeKiqjGEI6eM1qvUzzmQOE6Q6sr1QCnLy9ePWMVX2HsMDEHwFIA8xXv3FmR3he22z?purpose=fullsize

How the NGK Oxygex Analyzer Works

The analyzer continuously receives gas samples from the monitored system.

The process operates as follows:

  1. Gas sample enters the sensor system.
  2. Oxygen concentration is measured using zirconia sensor technology.
  3. Measurement signals are processed.
  4. Oxygen values are displayed digitally.
  5. Alarm functions monitor abnormal values.
  6. Control systems can adjust combustion parameters automatically.

The analyzer helps maintain efficient combustion while minimizing fuel consumption and emissions.


Main Features

Continuous Oxygen Monitoring

Provides real-time oxygen concentration measurement.

Digital Display

Easy-to-read oxygen percentage display.

High Accuracy

Reliable measurement across operating ranges.

Fast Response Time

Quick detection of oxygen concentration changes.

Compact Panel Mount Design

Suitable for marine control panels.

Combustion Optimization

Supports fuel efficiency improvements.

Long Sensor Life

Designed for continuous industrial and marine operation.

Product Images

https://images.openai.com/static-rsc-4/LRHz5pQ_Vyxl8HpJSUXNp5t7qEXV0OcuPaIl2uqiN6WetajnyeE8RIdKriQfbu13FrNT2HP7iJL0CzgHg7nyih7e-6XZMlysmvpo7XLtDWrqYrac68xe3cHRQfMwPA5_mlHdbi-GstgVNd5dHuwRhzOCrg_LsSfRq5GGloSqA8IGf1wLRc2s_EXLVUfgZNBy?purpose=fullsize
https://images.openai.com/static-rsc-4/_YbiPflKB57qwW4vtMq8AebSK_hRiPD88J3ji9D0j7vW4C_ZMigV7-mwlkRuGt1AwRcQq3IrrkI110xYPcKC_4gX1zAhFW2Wo_gwRWtOiIk5XtOvvjf4Cu6o0H2_infMpCEET7whOqsSUoaX7UdawXURELMHV8rqYrk3hIH5XrK0sD15h1DKmgl-5HQv0oHy?purpose=fullsize
https://images.openai.com/static-rsc-4/wtG0jgfgYT9eRomNRZLYnzKwcUKpqUsdNWjVIGBdDJ7h8c4Nux_mzASrFeBrxwdzgEIfXvz9NrWhb3UDdTphNhrjTqNvKS2Cj2Lx-J0RYsq0Y1TR_gTSYltMdCPRoAPgxr66hXb8UoiXwcMfXZNcQALCrQOXT-SiEc2HqKWvjGcyPAeznOHlIVxNWwgkVEiR?purpose=fullsize

Main Components

1. Analyzer Display Unit

The operator interface section.

Functions

  • Oxygen value display
  • Parameter setting
  • Alarm indication

2. Oxygen Sensor

Measures oxygen concentration.

Functions

  • Oxygen detection
  • Signal generation

3. Signal Processing Circuit

Processes sensor output signals.

Functions

  • Measurement calculation
  • Output generation

4. Alarm System

Monitors abnormal oxygen levels.

Functions

  • High oxygen alarms
  • Low oxygen alarms

5. Output Interface

Communicates with control systems.

Functions

  • Analog outputs
  • Alarm relays
  • System integration

Marine Applications

The NGK Oxygex Analyzer is commonly installed on:

Marine Boilers

  • Auxiliary Boilers
  • Composite Boilers
  • Exhaust Gas Boilers

Marine Incinerators

  • Waste Incinerators
  • Sludge Incinerators

Exhaust Gas Systems

  • Flue Gas Monitoring
  • Emission Monitoring

Inert Gas Systems

  • Oxygen Content Monitoring
  • Safety Control

Vessel Types

  • Tankers
  • LNG Carriers
  • Bulk Carriers
  • Container Ships
  • Offshore Vessels

Marine Installation Images

https://images.openai.com/static-rsc-4/C4_sOe_HYVg9z25lUq5elvidmndz3nooNQjD4lESGRPeptzreHFPMkbh2dZkpE_bQNrqPKeuMI2giyAk630mseb5PRxRo7Gjf2jd3Ii3aqN7z60AEEmoa83i5NQEAmd8GivoWnv336jztFXJ9U1Qx_AZPt-cztle1vPCuIcFf9aGNwHfSbDibeEruaIfI7iY?purpose=fullsize
https://images.openai.com/static-rsc-4/AT6lTTfJjbX8L4OpFt1qqKZoT0NFFkNZxIcHdf-CrG1zEPKX_d_2teFfJxe_KRN3e3JRVsZ6BjUSWvaKh5hau3AnSONDYi6n-CL88eZFfkO1hZM2k_pBIIy4Pa-njVB-8JPlQhj5j_c02l-SkxOJFloNx3R4ZWbBf3p8HQp2dTCSVrJG_iYYPzr_uA0G8IlP?purpose=fullsize
https://images.openai.com/static-rsc-4/1sx0STwd8cuC5QOz5QZBxvHraQZQZEqArsvgTj9OlUQGhY1FRTAiiS_aDOmjniUljwLhECDThmO6tNrWyI9BDihuxuJlzqDz5fpcPfkhXQcvg9Egcr5juQg4x90Ww1OD7Pkt3cVeG_4w2vHYE7k4wCu59yXqJ7xjoJYBm_93iD2QAsuPP8vTfBqydZI2k2TY?purpose=fullsize
4

Common Problems & Troubleshooting

No Oxygen Reading

Possible Causes

  • Sensor failure
  • Wiring fault
  • Power supply issue

Corrective Actions

  • Verify sensor condition
  • Check wiring
  • Test power supply

Unstable Readings

Possible Causes

  • Dirty sensor
  • Sample gas fluctuations
  • Electrical interference

Corrective Actions

  • Clean sensor
  • Verify sampling system
  • Check grounding

Calibration Error

Possible Causes

  • Sensor aging
  • Incorrect calibration gas
  • Calibration procedure error

Corrective Actions

  • Recalibrate analyzer
  • Verify calibration gas
  • Replace sensor if necessary

High Oxygen Alarm

Possible Causes

  • Excess combustion air
  • Air leakage
  • Burner adjustment issue

Corrective Actions

  • Adjust air-fuel ratio
  • Inspect combustion system
  • Check burner settings

Maintenance Tips

Daily Checks

  • Verify display readings
  • Confirm alarm status

Weekly Checks

  • Inspect sensor condition
  • Check sampling system

Monthly Checks

  • Verify calibration values
  • Test alarm outputs

Quarterly Maintenance

  • Clean sensor assembly
  • Inspect electrical connections

Annual Maintenance

  • Full calibration
  • Sensor inspection
  • Performance verification

Maintenance Images

https://images.openai.com/static-rsc-4/9YYGFrelVbT384QaW2bdHqkAX8zir7zom32k0s7eVzTLehZHqyMhwe93wI3ILYRqr3s3dVDDC6yIICqShwA4rwifbF-WdrSyWAif98_W00LvFgAQANn3xMKXjK2IWP_2sKGxRHl8MbKUBYaf6Ot3_4Ib9SU-2UWyog70gSW-5nylijyd5CxEfn4KV_8p6pHk?purpose=fullsize
https://images.openai.com/static-rsc-4/gUkyRTnI58k8IPpn2OiEhd6RPAmM1l4i3ABMHyb2ixHe3g6bwGCEmn5RFNXO2IjhlYSKH5cNlJBOW3HHaNpZvM1x-bMviChrsw0MTAvhzxMAMAc8rH6uNRT0S2-G85K8gHBf5L2EqVkn_cIvPxWwkWiklwMSdVPD3n0LgrvpXLiK0elyTwMk_9COGhSYGJDt?purpose=fullsize
https://images.openai.com/static-rsc-4/eo1JX8d3bL6PQ38WlKDObcVnxO6RLgCXNP0Z2mg2Cxemg3OZ33l7f-k9-r7TpkulNaxVT9x37NwddG0tb7kdiSOQZecDhwBjx08J5fWLnvi0tENgm6zg1Cp0grI6stiCcIwDfoMHTnxb32AZRGOX-bx987GUBAaL7PLiw8JK7ekQ6DElCdolIurDHSB4yP7e?purpose=fullsize
4

Why Ships Still Use NGK Oxygex Analyzers

The NGK Oxygex Analyzer remains popular because:

  • Proven Japanese technology
  • Accurate oxygen measurement
  • Reliable marine performance
  • Long sensor life
  • Easy maintenance
  • Excellent combustion optimization capability
  • Reduced fuel consumption
  • Worldwide industry acceptance

Many vessels continue operating NGK analyzers successfully for years due to their reliability and measurement accuracy.


Frequently Asked Questions (FAQ)

What is the purpose of an NGK Oxygex Analyzer?

It continuously measures oxygen concentration in combustion and exhaust gas systems.

Why is oxygen monitoring important?

Proper oxygen monitoring improves fuel efficiency, combustion quality, and emission control.

Where is the analyzer commonly installed?

Marine boilers, incinerators, inert gas systems, and industrial combustion equipment.

Does the analyzer require calibration?

Yes. Periodic calibration is essential for accurate measurement.

Can the analyzer improve fuel efficiency?

Yes. By optimizing combustion air-fuel ratios, fuel consumption can be reduced.


Short Product Description

The NGK Oxygex Oxygen Analyzer is a high-precision oxygen monitoring instrument manufactured in Japan for marine and industrial combustion applications. Designed to continuously measure oxygen concentration in exhaust gases and combustion systems, it helps optimize fuel efficiency, reduce emissions, and maintain safe operating conditions. Its reliability, accuracy, and robust construction make it a trusted solution for marine engineers worldwide.


Assembly Details

Complete System Assembly Includes

1. Analyzer Display Unit

  • Digital display
  • Control keypad
  • Alarm indicators

2. Oxygen Sensor Assembly

  • Zirconia sensor
  • Measurement element

3. Signal Processing Module

  • Measurement electronics
  • Output circuitry

4. Alarm Output Section

  • Relay contacts
  • Alarm functions

5. Calibration Interface

  • Calibration controls
  • Verification settings

6. Communication Interface

  • External system integration

7. Mounting Hardware

  • Panel mounting accessories
  • Fasteners

8. Electrical Connection Assembly

  • Terminal blocks
  • Signal wiring

SM MARINE SERVICE™

Marine Automation & Navigation Equipment Supplier

Available Condition:

• New Equipment
• Used Equipment
• Refurbished Equipment
• Reconditioned Equipment

Stock Location:

• Bangladesh
• China

Services:

• Worldwide Shipping
• Technical Support
• Spare Parts Supply
• Marine Equipment Sourcing

Contact Information

SM MARINE SERVICE™
Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh

Mobile / WhatsApp / Viber: +88 01818 929292

Email: info@smmarineservice.com

Website: www.smmarineservice.com

 

SM Marine Service

SM Marine Service

Marine Equipment Supplier

Welcome to SM Marine Service! How can we help you today? 10:15 PM
Need Help? Chat with us