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Introduction：The R-4OX is a 32mm industrial Oxygen sensor, ideal for fixed gas detectors.
Key Features: robust design, proven reliability and high performance
0.10 ± 0.03 mA
Zero Current (Offset)
< 0.6% vol. O2
T90 Response Time
< 15 seconds
0 - 25% Oxygen
Recommended Load Resistor
Temperature Range Continuous
800 to 1200 mbar
Operating Humidity Range
5% to 95% RH
All performance data is based on conditions at 20℃, 50%RH and 1 atm, using CCR Scientific recommended circuitry.
Sensor performance is temperature dependent, and please contact CCR Scientific for temperature performance other than 20℃.
Long Term Output Drift
< 5% per annum
Recommended Storage Temp
Expected Operating Life
> 24 months in air
24 months from date of dispatch
Intrinsic Safety Data
Maximum current in normal operation (pure O2)
Maximum o/c Voltage (10 to 100% O2)
Maximum s/c Current (10 to 100% O2)
Toxic gases at TLV levels will have no cross-sensitivity effect on CCR-Scientific oxygen sensors. 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.
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. CCR Scientific oxygen sensors are not suitable for continuous operation in concentrations of CO2 above 25%.