Industrial Portable CO Detector Design
Budget: ₹12,500 – ₹37,500 INR
I’m building a compact, handheld carbon-monoxide detector for use inside busy industrial plants and I need someone who can take the idea all the way from concept to production files. Your job is to engineer the complete electronics stack—sensor interface, signal-conditioning, microcontroller logic, power management, audible/visual alarms—and turn it into a manufacturable PCB.
Core requirements
• Target gas: Carbon Monoxide only (expandability to other electrochemical sensors is a plus but not mandatory now).
• Operating environment: indoor industrial spaces, so the design must tolerate vibration, electrical noise and a wide temperature / humidity range.
• Compliance path: the hardware must be laid out so it can pass ATEX, UL and CE certification. That means intrinsic-safety zoning, clearances/creepages, EMC-friendly routing and proper component derating need to be baked in from day one.
Deliverables
1. Complete schematic (native Altium, KiCad or Eagle plus PDF).
2. Clean, two-to-four-layer PCB layout with Gerbers, drill files and assembly drawings.
3. Bill of Materials with industrial-grade parts, supplier links and life-cycle notes.
4. Firmware source (if you choose a microcontroller) that handles sensor reading, temperature compensation, calibration routine, alarm logic and battery management.
5. Brief design dossier explaining how each certification requirement has been addressed, ready for submission to a notified body.
6. Optional but welcome: a 3D step file of the board for enclosure fit-checking and any suggestions on enclosure materials.
Acceptance criteria
• Bench test data showing CO measurement accuracy within ±5 ppm across 0–300 ppm.
• Power draw low enough for at least 24 h operation on a single Li-ion cell.
• All PCB files import and generate DRC without errors.
If you’ve already taken gas-sensing products through ATEX/UL/CE, let me know—your experience will help us move faster.
Core requirements
• Target gas: Carbon Monoxide only (expandability to other electrochemical sensors is a plus but not mandatory now).
• Operating environment: indoor industrial spaces, so the design must tolerate vibration, electrical noise and a wide temperature / humidity range.
• Compliance path: the hardware must be laid out so it can pass ATEX, UL and CE certification. That means intrinsic-safety zoning, clearances/creepages, EMC-friendly routing and proper component derating need to be baked in from day one.
Deliverables
1. Complete schematic (native Altium, KiCad or Eagle plus PDF).
2. Clean, two-to-four-layer PCB layout with Gerbers, drill files and assembly drawings.
3. Bill of Materials with industrial-grade parts, supplier links and life-cycle notes.
4. Firmware source (if you choose a microcontroller) that handles sensor reading, temperature compensation, calibration routine, alarm logic and battery management.
5. Brief design dossier explaining how each certification requirement has been addressed, ready for submission to a notified body.
6. Optional but welcome: a 3D step file of the board for enclosure fit-checking and any suggestions on enclosure materials.
Acceptance criteria
• Bench test data showing CO measurement accuracy within ±5 ppm across 0–300 ppm.
• Power draw low enough for at least 24 h operation on a single Li-ion cell.
• All PCB files import and generate DRC without errors.
If you’ve already taken gas-sensing products through ATEX/UL/CE, let me know—your experience will help us move faster.