Technology: Electrochemical Measurement Range: 1-25% vol. O2 Maximum Overload: 30% vol. O2 Output Signal: 0.10 ± 0.02 mA in Air Response Time (T90): <15 Seconds Zero Current (Offset): <0.6% vol. O2 Linearity: Can be considered linear in many cases. See Operating Principles (OP-02) for further details.
Operating Temperature Range: -20°C to +50°C (up to 3 months continuous across RH range) Recommended Storage Temp: 0°C to 20°C Thermal Transient (Temp. plunge +22°C to -20°C): <23.5% vol. O2 Operating Pressure Range: Atmospheric ± 20% Pressure Coefficient: <0.02% signal/mbar Pressure Transient (60 cm H2O step change): <200% signal change Relative Humidity Range: (at 0°C to 20°C) Continuous: 5 to 95%RH non-condensing Short Term: 0 to 99%RH non-condensing
Long Term Output Drift: <2% signal/month Typically <5% over operating life Expected Operating Life: Minimum 24 months in air Storage Life: 6 months in original packaging
Key Features and Benefits: • False alarm immunity • Enhanced response time in extreme applications • Reliably meets stated life • Superior environmental performance
Typical Applications General purpose, portable or fixed life safety.
Poisons CiTiceLs are designed for operation in a wide range of environments and harsh conditions. However it is important that exposure to high concentrations of solvent vapours is avoided, both during storage, fitting into instruments, and operation. When using sensors with printed circuit boards (PCBs), degreasing agents should be used before the sensor is fitted. Do not glue directly on or near the CiTiceL as the solvent may cause crazing of the plastic.
Cross Sensitivity Data Toxic gases at TLV levels will have no cross-sensitivity effect on Oxygen CiTiceLs. At very high levels (i.e. percent levels), highly oxidising gases (e.g. ozone, chlorine) will interfere to the extent of their oxygen equivalent, but most other commonly occurring gases will have no effect.
Acid Gases IMPORTANT NOTE: Acid gases such as CO2 and SO2 will be absorbed by the electrolyte and tend to increase the flux of oxygen to the electrode. This gives an enhanced oxygen signal of approximately 0.3% of signal per 1% CO2. Oxygen CiTiceLs are not suitable for continuous operation in concentrations of CO2 above 25%.