• Sensitivity: 21 to 24 mV/% methane.
• Response Time: t90 from air to 50% LEL methane is less than 15 seconds.
• Zero mV in Zero Air: ±20 mV.
• Range: 0 to 100% LEL methane.
• Linearity: 5% non-linear at 5.5% methane.

• Sensitivity Change at -20°C: 104.5 to 106.5% referenced to 20°C.
• Sensitivity Change at 50°C: 101.5 to 102.5% referenced to 20°C.
• Zero Change at -20°C: Less than ±0.5% LEL referenced to 20°C.
• Zero Change at 50°C: Less than -0.4% LEL referenced to 20°C.
• Temperature Range Certification: T5 -40° to 50°C.

• n-pentane: 0.45% LEL pentane/% LEL methane.
• Acetylene: 0.75% LEL acetylene/% LEL methane.
• HMDS: 9 hours until 50% activity loss at 10ppm HMDS.

• Voltage: 3.0 V (±0.1 V).
• Power Consumption: 190 mW.
• Voltage Sensitivity: Less than 2% sensitivity change per 0.1V change.

All sensors are tested at ambient environmental conditions with methane unless otherwise stated. Customers should test under their own conditions to ensure suitability. Alphasense Ltd provides this information without legal responsibility.

• Figure 2: Shows sensitivity variation with temperature. Sensitivity remains nearly constant over small voltage variations.
• Figure 3: Illustrates non-linearity from 0 to 5% methane. Non-linearity at 100% LEL is less than 4%.
• Figure 4: Displays voltage sensitivity data.