Komyo ZUS 3-05-12 NDIR Gas Analyzer for Accurate Gas Detection

Product Overview: Komyo NDIR Gas Analyzer Unit ZUS 3 05 12

Non-dispersive infrared (NDIR) gas analysis is the gold standard for measuring concentrations of gases that absorb infrared radiation at characteristic wavelengths — including carbon dioxide (CO₂), carbon monoxide (CO), methane (CH₄), sulfur dioxide (SO₂), nitric oxide (NO), and hydrocarbons. Unlike electrochemical or catalytic bead sensors that degrade over time and require frequent replacement, NDIR analyzers use an optical measurement principle with no consumable sensing element, providing years of stable, drift-free operation with only periodic calibration checks.

The Komyo ZUS-3-05-12 analyzer features a dual-range (II4) measurement configuration, allowing it to automatically switch between two calibrated measurement spans for enhanced resolution at low concentrations while maintaining capability at higher concentrations. This auto-ranging function is essential for process monitoring applications where gas concentrations vary significantly between normal operation and upset conditions — such as combustion optimization, exhaust gas analysis, and leak detection scenarios.

What distinguishes this Komyo analyzer is its combination of universal power input (AC 100-240V, 50/60Hz) and UL certification (E307592) with a 94V-0 flammability rating on enclosure materials. The universal voltage input eliminates the need for external transformers when deploying the analyzer in facilities with different mains voltages — whether in North America (120V), Europe (230V), or Asia (100-110V). Meanwhile, the UL listing and 94V-0 rating confirm that the unit meets rigorous North American electrical safety standards and uses self-extinguishing enclosure materials, making it suitable for installation in classified industrial areas where fire safety is paramount.

Technical Specifications

Parameter	Specification
Manufacturer	Komyo Rikagaku K.K. (Japan)
Model	ZUS 3 05 12 NDIR Gas Analyzer Unit
Measurement Technology	NDIR (Non-Dispersive Infrared)
Range Type	Double Range (II4)
Input Voltage	Universal AC 100-240V
Input Frequency	50/60 Hz
Power Consumption	0.5A max at AC 100-240V
Auxiliary Power Output	5V / 12V / 250mA
UL Certification	UL Listed E307592
Flammability Rating	94V-0 (Self-Extingishing)
Key Components	Cosel Power Supply, Koganei Components
Condition	NEW
SKU	169217
Product Images	5 High-Resolution Images
Warranty	30-Day Aeliya Marine Tech Warranty
Shipping	Free Worldwide Shipping

Key Features & Benefits

NDIR Optical Measurement Technology: Non-dispersive infrared analysis provides long-term stable, drift-free gas concentration measurements with no consumable sensing elements. The optical bench lifespan typically exceeds 10 years with proper maintenance.
Double Range (II4) Auto-Ranging: Dual calibrated measurement spans automatically switch based on concentration levels, providing enhanced resolution and accuracy at low concentrations while maintaining full-scale capability during high-concentration events.
Universal AC 100-240V Input: Operates on any mains voltage worldwide — from Japanese 100V to North American 120V to European 230V — without external transformers. Simplifies global deployment and inventory management for multinational corporations.
UL Listed (E307592): Independently certified by Underwriters Laboratories to meet North American electrical safety standards. The UL mark is required for installation in many U.S. and Canadian industrial facilities and is recognized by insurance underwriters.
94V-0 Flammability Rating: Enclosure materials are rated 94V-0 per UL 94, meaning they are self-extinguishing within 10 seconds when exposed to flame. Critical for installation in areas with combustible gases or dust.
Premium Japanese Components: Built with Cosel switching power supplies (renowned for reliability and low ripple) and Koganei precision pneumatic components, delivering Japanese manufacturing quality and long service life.
Auxiliary DC Power Output: Built-in 5V/12V DC output at 250mA provides convenient power for external sensors, alarm modules, or data loggers — eliminating the need for separate power supplies.
Selective Gas Measurement: NDIR technology measures specific gases by wavelength absorption, providing excellent selectivity against interfering gases. Unlike catalytic or electrochemical sensors, NDIR does not suffer from cross-sensitivity to non-target gases.
NEW Unit at Competitive Pricing: This NEW Komyo analyzer offers significant value compared to equivalent new NDIR analyzers from Western manufacturers priced at $15,000–$25,000+.

✅ NEW Unit Alert: Komyo NDIR Analyzer ZUS-3-05-12— UL certified, universal voltage, Japanese quality.

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Industrial Applications

The Komyo ZUS-3-05-12 NDIR gas analyzer is deployed across industries where accurate, reliable gas concentration monitoring directly impacts process efficiency, product quality, worker safety, and environmental regulatory compliance. Based on our direct experience supplying gas analysis instrumentation, here are the primary application sectors:

Combustion Optimization & Emission Monitoring

NDIR analyzers continuously measure CO, CO₂, and O₂ concentrations in boiler flue gas, furnace exhaust, and incinerator stack gas. Real-time measurement data enables automatic air-fuel ratio adjustment for maximum combustion efficiency while ensuring emissions remain within regulatory limits set by EPA, EU Directives, or local environmental agencies.

Process Gas Monitoring in Chemical Manufacturing

Chemical reactors, distillation columns, and gas purification systems require continuous monitoring of reactant and product gas concentrations. The ZUS-3-05-12's selectivity and double-range capability make it ideal for monitoring variable concentration processes such as hydrogen reforming, steam methane reforming, and partial oxidation reactions.

Indoor Air Quality (IAQ) & HVAC Systems

Commercial buildings, laboratories, and cleanrooms use NDIR CO₂ analyzers to monitor ventilation effectiveness and maintain indoor air quality per ASHRAE standards. The 94V-0 safety rating makes this analyzer suitable for installation in building mechanical rooms and air handling units.

Food & Beverage Processing (CO₂ Monitoring)

Carbon dioxide is used extensively in carbonated beverages, modified atmosphere packaging (MAP), and food freezing. NDIR analyzers monitor CO₂ levels in storage areas, production lines, and cold storage facilities — both for process control and for worker safety, since elevated CO₂ levels present an asphyxiation hazard in enclosed spaces.

Wastewater Treatment & Biogas

Anaerobic digesters at wastewater treatment plants produce biogas (primarily methane and CO₂). NDIR analyzers measure methane concentration for process optimization and flare/combustion system control. The ZUS-3-05-12 can also monitor greenhouse gas emissions from treatment basins.

Marine Engine Exhaust Monitoring

IMO 2020 and MARPOL Annex VI regulations require monitoring of SOₓ and NOₓ emissions from marine diesel engines. NDIR analyzers provide the continuous emission monitoring data (CEMS) required for compliance reporting and exhaust gas cleaning system (EGCS/SCR) control.

Pharmaceutical & Biotechnology

Fermentation processes, cell culture incubators, and freeze-drying (lyophilization) operations require precise CO₂ and O₂ monitoring. The NDIR optical method's non-consumptive nature ensures long-term stability without sensor replacement during extended batch runs.

Why Buy From Aeliya Marine Tech?

Aeliya Marine Tech has been a trusted global supplier of industrial instrumentation, marine equipment, and process automation solutions since 2002. When you purchase this NEW Komyo NDIR Gas Analyzer from us, you receive benefits that ensure a smooth procurement experience:

30-Day Functional Warranty: Every new gas analyzer is verified for calibration integrity and electronic functionality before shipment. If any defect is found within 30 days of delivery, we provide full replacement or refund — no questions asked.
Free Worldwide Shipping: We ship to over 120 countries via DHL, FedEx, and international freight partners. All analyzers are packaged in anti-static, shock-absorbing materials to ensure the sensitive NDIR optical bench arrives in perfect condition.
5 Detailed Product Images: Our high-resolution photography captures the analyzer from all angles — front panel, rear connections, nameplate/serial tag, internal component layout — giving you complete visibility of the unit before purchase.
Technical Pre-Sales Consultation: Our instrumentation engineers can advise on NDIR analyzer selection, gas sampling system design, calibration gas requirements, and integration with your existing SCADA or DCS control system.
Competitive Pricing on NEW Equipment: This NEW Komyo ZUS-3-05-12 offers outstanding value compared to equivalent NDIR analyzers from European and North American manufacturers that typically retail at $15,000–$25,000+.
Documented Authenticity: As a NEW unit, the analyzer ships with original manufacturer documentation, UL certification records, and traceable component specifications (Cosel power supply, Koganei pneumatics).

How to Order & Installation Guide

Purchasing and commissioning your Komyo NDIR Gas Analyzer is straightforward with Aeliya Marine Tech:

Step 1: Place Your Order

Click the "Add to Cart" button and complete checkout. We accept wire transfer, major credit cards, and PayPal. For corporate purchase orders, contact our sales team at sales@aeliyamarinetech.com to establish payment terms.

Step 2: Pre-Shipment Verification

Our technicians perform incoming inspection on the NEW unit, verify all accessories and documentation are present, and confirm the unit powers on and displays correctly. We email you the inspection report and tracking information within 24 hours of shipment.

Step 3: Receive & Unpack

The analyzer arrives in anti-static, shock-protected packaging. Carefully unpack and inspect for shipping damage. Retain all packaging until you've confirmed operation. Store in a clean, dry environment until installation.

Step 4: Electrical Connection

Connect the analyzer to your local AC mains (100-240V, 50/60Hz) using an appropriately rated power cord. The universal input automatically adapts to local voltage — no voltage selector switch is required. Ensure the circuit is properly grounded per local electrical codes.

Step 5: Gas Sampling System Connection

Install the gas sampling line from your process point to the analyzer inlet using appropriate tubing (typically 6mm or 1/4-inch stainless steel or PTFE). Include a particulate filter upstream of the analyzer to protect the NDIR optical bench. If measuring hot or wet gas, install a sample conditioning system with cooler and condensate drain.

Step 6: Calibration & Commissioning

Before first use, calibrate the analyzer using certified span gas (known concentration of target gas) and zero gas (nitrogen or synthetic air with no target gas). Follow the Komyo operator manual for calibration procedures. Document the calibration date and gas cylinder traceability for regulatory compliance records.

External Technical Resources

Komyo Rikagaku K.K. Official Website – Japanese manufacturer of gas detection and analysis instrumentation, product catalogs, and application data
Cosel Co., Ltd. Official Website – Japanese power supply manufacturer, technical specifications for the power supply components used in this analyzer
Wikipedia – Infrared Gas Analyzer – Comprehensive explanation of NDIR gas analysis principles, Beer-Lambert law application, and comparison to other gas sensing technologies
UL (Underwriters Laboratories) – Safety certification organization, information on UL 94 flammability ratings and UL E-number verification
U.S. EPA – Emission Measurement Center – Regulatory standards and test methods for continuous emission monitoring systems (CEMS) using NDIR analyzers

Frequently Asked Questions (FAQ)

Q: What is NDIR gas analysis technology?

A: NDIR (Non-Dispersive Infrared) is an optical gas analysis technique that measures how much infrared light a gas sample absorbs at specific wavelengths. Each gas molecule (CO₂, CO, CH₄, etc.) absorbs IR radiation at characteristic wavelengths according to the Beer-Lambert law. The NDIR analyzer shines infrared light through a sample cell and measures the absorption at the target gas's specific wavelength. The amount of absorption is directly proportional to gas concentration. NDIR provides excellent selectivity, long-term stability, and no consumable sensing elements — unlike electrochemical or catalytic sensors that degrade and require periodic replacement.

Q: Is this Komyo gas analyzer new or used?

A: This is a NEW unit (SKU: 169217) . It is a factory-fresh Komyo ZUS-3-05-12 analyzer that has not been previously installed or operated. Aeliya Marine Tech performs incoming inspection and power-on verification before shipment. The unit ships with a 30-day warranty, 5 detailed product images, original manufacturer documentation, and free worldwide shipping.

Q: What does "Double Range (II4)" mean on the ZUS-3-05-12?

A: Double Range (II4) means the analyzer has two calibrated measurement spans that automatically switch based on the detected gas concentration. For example, the analyzer might measure 0–100 ppm on its low range (Range I) and 0–10,000 ppm on its high range (Range II). At low concentrations, the analyzer operates on the narrow span for maximum resolution and accuracy. When concentrations increase beyond the low-range threshold, it automatically switches to the wide span. This auto-ranging capability is essential for processes with highly variable gas concentrations.

Q: What is UL certification E307592 and why does it matter?

A: UL E307592 is the file number for the Underwriters Laboratories safety certification of this Komyo gas analyzer. UL is the most recognized electrical safety certification organization in North America. The E-number confirms that the product has been independently tested and meets UL's safety standards for electrical shock hazard, fire risk, and mechanical safety. For installation in U.S. and Canadian industrial facilities, UL listing is often mandatory per local electrical codes and insurance requirements. The E307592 certification can be verified on the UL online certification directory.

Q: What is a 94V-0 flammability rating?

A: 94V-0 is the highest flame resistance rating under the UL 94 standard for plastic materials used in electrical equipment enclosures. A 94V-0 rated material must self-extinguish within 10 seconds when exposed to flame, with no dripping of flaming particles. This rating is critical for gas analyzers installed in hazardous locations where combustible gases may be present — it ensures that even if an internal electrical fault occurs, the enclosure material will not sustain combustion or spread flame.

Q: What gases can the Komyo ZUS-3-05-12 measure?

A: The specific gas measurement capability depends on the optical filter configuration installed in the NDIR bench at the factory. Common configurations include CO₂ (carbon dioxide), CO (carbon monoxide), CH₄ (methane), C₃H₈ (propane), SF₆ (sulfur hexafluoride), and various hydrocarbons. The ZUS-3-05-12 designation indicates a specific factory configuration. Contact Aeliya Marine Tech's technical team with the full model code and serial information to confirm the exact gas measurement specification for this unit.

Q: Can I use this analyzer with any AC voltage worldwide?

A: Yes — the Komyo ZUS-3-05-12 features a universal AC input rated for 100–240V, 50/60Hz. This means it will operate correctly on Japanese 100V mains, North American 120V, European 230V, and any voltage in between. The built-in active power factor correction (likely using the Cosel power supply) automatically adjusts to the input voltage. No external transformer or voltage selector is required — simply connect to a properly grounded AC outlet within the rated voltage range.

Q: How does the Komyo NDIR analyzer compare to European and American brands?

A: Komyo Rikagaku has manufactured gas detection and analysis equipment since 1963 and is well-regarded in the Asian and global markets for reliable, cost-effective instrumentation. The ZUS-3-05-12 uses the same fundamental NDIR measurement principle as analyzers from Siemens, ABB, Emerson, and Horiba — with comparable accuracy, selectivity, and stability. The key differentiators are the more competitive pricing ($15,000–$25,000+ for Western brands) and the use of premium Japanese components (Cosel power supply, Koganei pneumatics) that are known for exceptional reliability in industrial environments.

Ready for Precision Gas Analysis at Exceptional Value?

The Komyo ZUS-3-05-12 NDIR analyzer delivers NEW instrument-grade accuracy, UL certification, and universal voltage

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✅ 30-Day Warranty | ✅ Free Shipping Worldwide | ✅ 5 Product Images | ✅ UL Certified | ✅ NEW Condition

June 10 2026 Digital Marketing - Aeliya Marine Tech