Gas Detector 4 Gases – Reliable Industrial Safety Monitoring

In hazardous industrial environments, the Instrava 4-gas detector provides real-time monitoring of multiple gases simultaneously, ensuring the safety of operators in confined spaces, mines, oil & gas plants, and chemical facilities.

This gas detector 4 gases device combines rugged design, explosion-proof protection, and advanced sensor technology to detect oxygen, combustible gases, carbon monoxide, and hydrogen sulfide.

Key Benefits for Industrial Users:

  • Simultaneous detection of up to 4 gases

  • Fast response ≤30 seconds, accurate readings ≤±2% F.S

  • Rugged, drop-resistant design and IP67/IP68 protection

  • Explosion-proof certified: IECEX, ATEX, CNEX

  • Audible, visual, vibration alarms and man-down safety function

  • Long battery life (>15 hours continuous operation)

Gas Detectors Description  

Industrial Applications of Gas Detector 4 Gases

The Instrava 4-gas detector is designed for industrial safety in challenging environments:

Mining Operations

Protects workers from toxic and combustible gases in underground mines.

Oil & Gas Plants

Detects flammable gases and hazardous emissions during pipeline inspection, drilling, and refinery maintenance.

Confined Spaces

Ensures oxygen levels and gas concentrations are safe in tanks, tunnels, and storage vessels.

Chemical and Wastewater Facilities

Monitors toxic gases like CO and H₂S to maintain safe working conditions.

Portable multi gas detector with docking station used for charging and maintenance of industrial gas detection equipment.
Portable four gas detector front and side view with digital display and industrial protective housing.

Key Advantages of the 4-Gas Detector

Rugged & Durable

  • Can resist 3-meter drops

  • IP67/IP68 protection

  • EMC anti-static tested, works in walkie-talkie environments

Explosion-Proof & Certified

  • IECEX, ATEX, CNEX certified

  • Explosion-proof grade: Exia IICT4 Ga

  • Safe and reliable for hazardous environments

Multi-Level Safety

  • Man down alarm for underground operators

  • Password protection prevents unauthorized menu changes

  • High/low alarm latched function captures sudden gas changes

  • Sound, light, vibration alarm for maximum safety

Gas Detectors Parameter  

Parameter Specification
Product Type Gas Detector 4 Gases
Gas Types Oxygen (O₂), Combustible Gas (LEL), Carbon Monoxide (CO), Hydrogen Sulfide (H₂S)
Detection Range 0–30%VOL, 0–100%LEL, 0–500PPM, 0–100PPM
Resolution 0.01%VOL, 1%LEL, 1PPM, 1PPM
Accuracy ≤ ±2% F.S (except special gases)
Response Time ≤30 seconds
Sampling Method Pump suction (external tube up to 20m), diffusion
Display Monochrome graphics 160×96, auto flip 180°
Backlight Adjustable, auto on during alarm
Alarm 95dB buzzer (@30cm), red LED, vibration, man down alarm, remote optional via Bluetooth
Battery 3.7V rechargeable lithium battery, 2200mAh
Working Hours >15 hours continuous pumping
Charger Travel charger, DC interface, ≥4 hours charging
Explosion-proof Grade IECEX/ATEX (II IG Ex ia IIC T4), CNEX Ex ia IIC T4 Ga
Protection Level IP68
Operating Temperature -20℃ to +50℃
Humidity 0–90% RH (no condensation)
Environmental Pressure 86–106 KPa
Size 157×84.5×59.5 mm (with back clip and filter)
Weight 365g (including battery, belt clip, filter)
Certifications EMC 2004/108/EC, ATEX 94/9/EC

Instrava OEM/ODM

Tailored Sourcing & Customization: Getting You the Exact Product You Need

As your trusted supplier and sourcing partner, we bridge the gap between your custom requirements and China’s vast manufacturing capabilities.

Finding the right product in a massive supply chain can be challenging. That is where we step in.

As a curated industrial supplier, our core value is simple: we stand in your shoes to help you procure the most optimal products. Whether you are an EPC contractor needing specialized technical compliance, an OEM equipment manufacturer looking for custom branding, or an industrial distributor/trader seeking competitive edge, we customize and tailor products to fit your exact procurement needs.

How We Customize to Fit Your Procurement Needs

  • For EPC Contractors & Engineers: We custom-configure instruments and devices to match your precise datasheets—tailoring process connections, exotic materials, signal protocols, and managing third-party calibration and testing so you get project-ready solutions.

  • For OEM Equipment Manufacturers: We provide comprehensive OEM/ODM customization, including custom housing, labeling, branding (private labeling), and tailored technical specifications to seamlessly integrate with your machinery.

  • For Industrial Distributors & Traders: We offer flexible customization in packaging, product ranges, and technical parameters, helping you differentiate your portfolio and win more local bids.

Why Partner with Us for Custom Sourcing?

  • One-Stop Engineering Alignment: You don’t have to deal with multiple factories. We translate your technical requirements into precise manufacturer blueprints.

  • Strict Quality & Compliance Safeguard: We oversee the entire customization and production process in China, ensuring the final customized product meets your local standards and certifications.

  • Our Ultimate Value: We don’t just sell what’s on the shelf. We find, customize, and deliver the most suitable and cost-effective product for your unique application.

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Related Product Recommendations  

The Instrava gas detector 4 gases can simultaneously monitor O₂, combustible gas (LEL), carbon monoxide (CO), and hydrogen sulfide (H₂S).

Optional sensors allow customization for specific toxic or industrial gases, making it ideal for confined space monitoring, industrial plants, and mining operations.

The detector features multi-mode alarms: audible, vibration, and flashing red LED alerts.

Additional safety functions include:

  • Man down alarm for underground operators

  • High/low alarm latched to capture sudden gas changes

  • Password protection to prevent unauthorized menu changes

These features help operators work safely in harsh industrial environments.

The Instrava 4-gas detector provides real-time readings within ≤30 seconds.

Accuracy is ≤ ±2% F.S (depending on sensor type). The detector supports TWA, STEL, MAX, MIN values, making it suitable for industrial safety monitoring and regulatory compliance.

Equipped with a 3.7V rechargeable lithium battery (2200mAh), the detector supports over 15 hours of continuous pumping operation.

Battery protections include overcharge, over-discharge, overvoltage, overheating, and short-circuit protection, ensuring reliable field performance.

Yes. It is designed for rugged and durable use:

  • Drop-resistant up to 3 meters

  • IP68 protection against dust and water

  • Explosion-proof certified (IECEX, ATEX, CNEX)

  • EMC anti-static tested, works even in walkie-talkie environments

This makes it ideal for oil & gas, mining, chemical, and wastewater facilities.

Yes. Key features include:

  • Stores up to 100,000 data sets, exportable via cable

  • Optional Bluetooth for real-time data transfer to PC or mobile

  • Supports unit switching (PPM/mg/m³) and automatic conversion

  • Unique modifiable ID for instrument management

These functions make the detector user-friendly for engineering projects, safety monitoring, and industrial audits.

Why Trust Instrava?

We select manufacturers from a neutral, impartial standpoint, always with your best interests in mind.

Our very existence depends on helping you source the products that are the perfect fit for your needs.

Based in China, we are able to conduct on-site inspections of production environments and product quality firsthand.

We help you avoid intermediaries posing as factories.

We facilitate smoother after-sales support, eliminating time zone issues and the delays often associated with dealing directly with factories.

Our multilingual team ensures effective communication.

For a trading startup, every interaction with a client is a precious opportunity—a sign that you are willing to place your trust in us and give us the chance to prove ourselves.
In the digital age, while information is easily accessible, misconceptions often cloud the trust between people.

Instrava relies entirely on trust; it is our core philosophy and the foundation of our existence in society. It is the fundamental basis for our long-term growth and our commitment to serving the community.

Please place your trust in us.

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