TÜBİTAK 1707Ongoing
Portable Multi-Gas Detection Device Development
The risk of personnel exposure to toxic and flammable gases in industrial facilities, maintenance operations and field work is a constant threat. Under the TÜBİTAK 1707 programme, HEFA Teknoloji is developing a portable multi-gas detection device capable of simultaneously monitoring 3 toxic and 1 flammable gas, with a software-based compensation algorithm for reliable measurement over a wide temperature range. The device is currently in the development phase.
What We're Building
Multi-Gas Detection — Sensor Integration
- Electrochemical sensors: 3 independent channels for toxic gases such as CO, H₂S, NO₂, SO₂, Cl₂, NH₃
- Pellistor (catalytic bead) sensor: flammable gas detection, measurement in %LEL units
- Separate signal conditioning and analog pre-processing circuit for each sensor type
- Configurable sensor slot architecture: same platform adaptable to different gas risks
Software-Based Compensation Algorithm
- Real-time correction of electrochemical sensor outputs for ambient temperature variation
- Separately characterised compensation parameters for each sensor type
- Maintained measurement accuracy over wide operating temperature range
User Interface and Power Management
- Display-based interface: real-time concentration values and alarm status for all gas channels
- Dual language support: language selection configurable via device menu
- Rechargeable battery operation with energy-efficient power management firmware
Technical Specifications
| Parameter | Value |
|---|---|
| Toxic gas channels | 3 (simultaneous) |
| Flammable gas channel | 1 |
| Toxic gas sensor technology | Electrochemical |
| Flammable gas sensor technology | Pellistor (catalytic bead) |
| Flammable gas measurement unit | %LEL |
| Compensation | Software-based, wide temperature range |
| User interface | Display-based |
| Alarm notification | Visual alert on display |
| Language support | 2 languages |
| Power source | Rechargeable battery |
| Device type | Portable |
| Project support | TÜBİTAK 1707 (Order-Based R&D) |
Use Cases
- Industrial Facility Maintenance Operations — Toxic and flammable gas checks before and during confined space entry. Configurable sensor structure allows configuration for site-specific gas risks.
- Petrochemical and Refinery Sites — Continuous gas monitoring for personnel safety in process areas, around tanks and at pipeline maintenance points. The flammable gas channel detects combustible gas leaks at %LEL level.
- Mining and Tunnel Operations — Simultaneous monitoring of toxic gas accumulation and explosive atmosphere risk in underground work environments. Reliable measurement over a wide temperature range is critical in variable underground conditions.
- Wastewater Facilities and Sewers — Personnel protection in confined spaces with high risk of H₂S, CO and flammable gas.
Frequently Asked Questions
What does the TÜBİTAK 1707 programme mean?
TÜBİTAK 1707 is an order-based R&D programme. A client organisation partners with an R&D company to develop a product or technology they need. Both organisations submit the application to TÜBİTAK together, which evaluates and decides whether to fund the project. For the client, this means benefiting from public R&D support to have a custom product developed rather than bearing the full development cost alone.
Which toxic gases can the device detect?
The sensor slots are configurable. Depending on client needs, different toxic gas sensors such as CO, H₂S, NO₂, SO₂, Cl₂ and NH₃ can be fitted. This allows the same hardware platform to be adapted to different industrial gas risks.
What does %LEL mean in flammable gas detection?
LEL (Lower Explosive Limit) is the lowest concentration at which a gas-air mixture becomes flammable. By measuring in %LEL units, the device detects the risk of an explosive atmosphere before concentrations reach dangerous levels. For example, a 10% LEL warning means one tenth of the explosion limit has been reached.
How is measurement accuracy maintained over a wide temperature range?
Electrochemical sensor output characteristics can vary with environmental conditions. HEFA's software-based compensation algorithm corrects sensor outputs in real time to maintain measurement accuracy over the wide operating range.
What is the battery life?
The device runs on a rechargeable battery. Power management firmware optimises sensor reading cycles and display management with a focus on energy efficiency to maximise continuous operating time.
This project covers a comprehensive R&D process including electrochemical and pellistor sensor integration, multi-gas channel management, software-based compensation algorithm development, and portable device power management. If you have a portable gas detection device development need or multi-sensor integration requirement, we can evaluate your technical requirements together. gas detection device design service for more information.
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