Product Overview
The AutroPoint HC200 is a fixed, diffusion-based infrared gas detector that continuously monitors flammable hydrocarbon gases from 0–100% LFL.
Its 316 stainless-steel enclosure, sapphire optical components and IP66/IP67 protection make it suitable for harsh marine, offshore and oil-and-gas environments. It can function independently or integrate with larger fire-and-gas safety systems.
Detectable Gases
The detector can detect hundreds of flammable hydrocarbon gases and vapours. It is performance-certified for:
- Methane
- Propane
- Ethylene
- Butane
Other hydrocarbon gases can be configured and calibrated through HART or Modbus communication.
Main Features
- Non-contact infrared measurement
- Measuring range of 0–100% LFL
- Fast-response option available
- Electrically isolated 4–20 mA output
- HART communication
- RS-485 Modbus and ASCII communication
- Optional alarm and fault relays
- Continuous automatic diagnostics
- Local three-colour status LED
- Internal magnetic calibration switch
- Remote-calibration capability
- 316 stainless-steel construction
- Sapphire optical components
- SIL 2-certified versions
- Hazardous-area and marine approvals
Technical Specifications
| Specification | Details |
|---|---|
| Measurement principle | Infrared absorption |
| Standard range | 0–100% LFL |
| Nominal supply | 24 VDC |
| Operating-voltage range | 18–32 VDC |
| Nominal power consumption | 4 W at 24 VDC |
| Maximum consumption | 10 W at 32 VDC |
| Analogue output | Isolated 4–20 mA |
| Digital communication | HART and RS-485 Modbus/ASCII |
| Low-alarm adjustment | 5–60% LFL |
| High-alarm adjustment | 5–60% LFL |
| Accuracy | ±3% up to 50% LFL |
| Higher-range accuracy | ±5% from 51–100% LFL |
| Operating temperature | –55°C to +75°C |
| Storage temperature | –55°C to +85°C |
| Humidity | Up to 99% RH |
| Protection rating | IP66/IP67 |
| Housing | CF8M/316 stainless steel |
| Cable entries | 2 × ¾-inch NPT or M25 |
| Approximate weight | 4.8 kg |
| Dimensions | 236 × 132 × 117 mm |
| Warm-up time | Approximately two minutes |
| Recommended stabilization | One hour |
| Self-diagnostic interval | Once per second |
Typical Methane Response
| Configuration | T50 | T90 |
|---|---|---|
| Standard response, without filter | 4.5 seconds | 7.1 seconds |
| Fast response, without filter | 1 second | 1.5 seconds |
| Standard response, with filter | 4.8 seconds | 7.6 seconds |
| Fast response, with filter | 1.2 seconds | 2.6 seconds |
Response depends on the selected gas, weather baffle, calibration and detector configuration.
Outputs and Integration
Standard outputs include:
- Isolated 4–20 mA
- HART communication
- RS-485 Modbus or ASCII
An optional relay board provides:
- Two programmable gas-alarm relays
- One fault relay
The HC200 can integrate with AutroSafe Integrated Fire and Gas systems and compatible AutroVu display units.
Typical Marine Applications
- LNG and LPG vessels
- Oil and chemical tankers
- FPSOs and offshore platforms
- Pump rooms
- Compressor areas
- Fuel-gas systems
- Machinery spaces
- Gas-processing facilities
- Refineries and terminals
- Double-wall gas piping systems
Certifications
- FM and CSA hazardous-area approvals
- ATEX: DEMKO 01 ATEX 129485X
- IECEx hazardous-area certification
- DNV marine approval
- Marine Equipment Directive certification
- IEC 61508 SIL 2-certified versions
- Ex d and Ex d e configurations
- Suitable for Class I Division 1 and Zones 1 and 2
Model Selection
The exact article number depends on:
- NPT or metric cable entries
- Standard or fast-response output
- Relay-board requirement
- Weather-baffle configuration
- HART-port option
- Required marine and hazardous-area approvals
- Factory calibration gas
The full model configuration should therefore be confirmed before quotation.
