General Performance
- Detection Principle: Infrared point detection utilizing dual-wavelength source.
- Target Gas: Methane (factory calibrated defaults).
- Measurement Range: 0 to 100% Lower Flammable Limit (LFL).
- Response Time: T90 speed in less than 1.5 seconds.
- Accuracy: ±3% LFL from 0 to 50% LFL.
- Stability: Zero drift less than ±2% LFL over 12 months.
Electrical Specifications
- Operating Voltage: 24 VDC nominal (range 18 to 32 VDC).
- Power Consumption: 4.0 watts nominal at 24 VDC.
- Peak Power: 7.5 watts maximum under high heater load.
- Current Output: 4–20 mA isolated source or sink configuration.
- Digital Communication: HART protocol overlaid on 4-20mA loop.
- Serial Port: RS-485 Modbus RTU and ASCII compliant.
Mechanical & Materials
- Enclosure Material: 316 stainless steel heavy-duty construction.
- Conduit Entry: 3/4 inch NPT threaded connections.
- Optics Protection: Heated sapphire optical surfaces to prevent condensation.
- Weather Guard: Integrated hydrophobic barrier shield.
- Weight: 11.5 pounds (5.2 kilograms).
Environmental Limits
- Operating Temperature: -40°C to +75°C (-40°F to +167°F).
- Storage Temperature: -55°C to +85°C (-67°F to +185°F).
- Humidity Range: 0 to 99% relative humidity, non-condensing.
- Ingress Protection: IP66 and IP67 certified enclosure rating.
Certifications
- Hazardous Locations: FM, CSA, ATEX, and IECEx explosion-proof ratings.
- Functional Safety: SIL 2 capable for safety instrumented systems.