4 IN 1 Gas Detector ( HTC – GD-801 )

Description

HTC GD-801 4-in-1 Gas Detector — Comprehensive & Reliable Gas Safety Monitoring

The HTC GD-801 is a powerful and versatile portable gas detector designed to protect lives by continuously monitoring multiple hazardous gases. Engineered for robustness and equipped with advanced detection technology, it combines four gas detection capabilities — CO (Carbon Monoxide), H₂S (Hydrogen Sulfide), O₂ (Oxygen), and combustible gas (Ex / LEL) — into a single rugged device. With clear visual and audible indications, voice alerts, data logging, and a durable build, the GD-801 offers all-round safety monitoring for industrial, mining, oil & gas, environmental, and confined space applications.

Key Features & Capabilities

4-Gas Detection in One Device

• Monitors Carbon Monoxide (CO) up to 0–1000 µmol/mol, enabling detection of both low and high levels of CO exposure.

• Monitors Hydrogen Sulfide (H₂S) over a range up to 0–100 µmol/mol, critical in many industrial environments where H₂S is produced.

• Detects Combustible Gas as % LEL (Lower Explosive Limit), enabling early warning of explosive gas mixtures.

• Monitors Oxygen (O₂) concentration from 0–30% vol, ensuring safe breathable air and detecting oxygen deficiency or enrichment.

These four gas types cover many of the critical risks in workplace safety and confined spaces, making GD-801 an “all-in-one” gas safety solution.

Sensor & Detection Quality

• Uses high-precision electro-chemical sensors for CO, H₂S, and O₂ measurements; combustible gases are detected via catalytic combustion sensors for % LEL measurement.

• Response time is fast (less than 30 seconds) to allow prompt detection and reaction.

• Accuracy specification is around ±5% full scale for the gas readings—consistent performance expected under typical conditions.

• Resolution in measurement is fine: typically 1 µmol/mol for CO and H₂S; 1% LEL for combustible gas detection; 0.1% vol for oxygen lines.

Display & Interface

• Comes with a 2.4-inch IPS colour screen that displays all four gas readings together, often with gas type labels, numeric values, and possibly bar graphs.

• Real-time data graphing: often a scroll or historical curve for at least one gas channel to show how gas concentration is changing over time.

• Memory storage for up to 400 sets/data records, allowing operators to review past readings or track exposure over time.

• Voice broadcast feature: the device can announce readings or alarms via voice, enhancing awareness especially in noisy environments or where visual glance may not suffice.

Alerts & Alarms

• Multiple modes of alert: sound, light, vibration—ensuring redundant alert pathways so that alarm is noticeable even under poor visibility or high noise.

• Different alarm thresholds for each gas: low alarms and high alarms per gas type. For example, a warning level for H₂S at ~10 µmol/mol and high alarm at ~20% LEL for combustible gas, etc.

• Voice alerts add an audible spoken warning along with visual / tactile cues.

• Built-in air pump to draw air sample into sensor chamber, improving response in stagnant air or when gas source is not directly in front of detector. Also supports optional external gas pipe & detection handle for flexible sampling.

Power, Portability & Build

• Powered by a built-in Li-ion battery (3,000 mAh) at 3.8 V, ensuring substantial continuous usage before recharging.

• Compact size: height ~174 mm × width ~77 mm × depth ~55 mm; weight ~318 g, making it portable but substantial enough to convey durability.

• Housing uses high-strength engineering plastic and sensitive sensor protection; rated IP54 for dust protection and splash resistance; designed to be explosion proof (Ex proof), suitable for hazardous zones.

• Includes a Type-C charging cable; usual accessories include user manual, cloth bag, hose, colour-pack box, possibly a multi-function detection handle in some “Pro” variants.

Technical Specifications

Here is a more precise spec overview (from the catalogue):

Use-Case Scenarios & Applications

Because the GD-801 supports multiple gases, strong housing, and flexible warning modes, it is ideal for many environments:

• Oil & Gas & Petrochemical Plants: Combustible gases, H₂S, CO are major concerns; this device allows monitoring of multiple hazards in one unit.

• Mining and Tunneling: Underground spaces may have gas stratification, low oxygen, H₂S pockets, or vehicle emissions (CO). Portable comprehensive detector helps ensure safety.

• Confined Spaces / Rescue Work: Entry into tanks, sewers, silos often requires checking oxygen and presence of toxic or explosive gas. With pumps and hose attachments, external sampling becomes possible.

• Industrial Maintenance / Workshops: Engines, generators, welding operations generate CO; combustible gas leaks may occur; oxygen depletion in enclosed spaces may threaten safety.

• Environmental Monitoring & Safety Audits: Regulatory compliance requirements often demand logging of exposure levels. With 400 data points stored, this unit eases documentation.

• Firefighting and Emergency Response: For post-fire or accident scenes, detection of CO and residual gases to assess risk before personnel entry.

Operational & Safety Considerations

• Before use, allow device to “warm up” so sensors stabilize. Electrochemical sensors typically require a burn-in or stabilization period.

• Calibrate or check the sensor periodically, per manufacturer interval (sensor life often ~1 year for many gas sensors). Change sensors once lifespan ends.

• Maintain battery: ensure full charge when entering potentially dangerous zones; monitor battery indicator. Charge via Type-C port.

• When using external hose or detection handle, ensure clamped/secured and leak-free, to avoid false readings or delays.

• Set alarm levels appropriately: in certain environments local laws or safety standards may require stricter thresholds (for example, lower CO or H₂S alarm points).

• Ensure adequate maintenance: clean sensor ports, avoid ingress of dust or liquids beyond rating, avoid bumping or shocking device, which might damage sensors.

Advantages & Why Choose GD-801

• Multi-gas detection (4 gases) reduces need for separate detectors; cost-effective for operations requiring monitoring of more than one gas.

• High accuracy and resolution allow detection of low-level hazards and early warning rather than only emergency thresholds.

• Voice alerts add safety in noisy environments or when visual attention is limited.

• Long battery capacity gives extended field use; compact size and reasonable weight make it portable.

• Robust construction (IP54, explosion-proof design) ensures reliable operation under harsh conditions.

• Ample data storage (400 points) plus real-time graph helps in post-incident analysis and compliance reporting.

Summary

The HTC GD-801 4-in-1 Gas Detector is a top-end solution for monitoring and protecting against multiple gas hazards. It blends high precision sensors, multiple alarm modalities, strong build quality, helpful display and data logging, and useful accessories into a single unit. For industries where CO, H₂S, oxygen, or explosive gases pose real risks, the GD-801 offers a well-rounded, ready-to-deploy tool for safety, awareness, and regulatory compliance.