The Picarro SI2205 gas concentration analyzer delivers fast, precise, real-time measurements of hydrogen fluoride (HF) at parts-per-trillion (ppt) sensitivity with negligible drift for atmospheric science and air quality applications. It incorporates coated components in the critical gas pathway. This reduces the propensity of HF molecules to adhere to pathway surfaces, which improves measurement response time. The SI2205 requires virtually no consumables, thereby offering significant ease-of-use and lower cost of ownership benefits. The analyzer is rugged and easily transportable.

• Fast, continuous, real-time measurements without interference 
• Precise temperature and pressure control ensures accuracy with negligible drift
• Small footprint, field or lab deployable, long-term stability for infrequent calibration 
• Water correction automatically reports dry gas mole fractions

Precision at 5 minutes is <10 ppt. Maximum drift over 24 hours is ±.15 ppb when measured at 25 °C and 760 Torr.

Water correction software automatically reports dry gas mole fractions to help reduce research complexity and consumable costs.

The SI2205 analyzer can operate and deliver accurate measurements for months without user interaction, and concentration trending data is continuously archived to the analyzer’s internal hard drive. The analyzer can be configured to automatically export measurement data via Ethernet, RS-232 interface, Analog 4-20mA or Modbus outputs.

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