| Model | Oxi 315i | Oxi 330i | Oxi 340i | 
  
    | Measuring
      range/ resolution | O2
      concentration 0.00 … 19.99 mg/l (19.9 mg/l*)  0.0 … 90.0 mg/l (90
      mg/l*) | O2
      concentration 0.00 … 19.99 mg/l (19.9 mg/l*)  0.0 … 90.0 mg/l (90
      mg/l*) | 
  
    | O2
      saturation 0.0 … 199.9% (199%*)   0 ... 600% | O2
      saturation 0.0 … 199.9% (199%*)    0 … 600% | 
  
    | . | O2
      part. press. 0,0 … 199.9 mbar (199 mbar*)    0 ... 1250
      mbar | 
  
    | temperature
      -5.0 … +50.0 | °C
      temperature -5.0 … +50.0 °C | 
  
    | *if
      DurOx oxygen sensor is used | *if
      DurOx oxygen sensor is used | 
  
    | Accuracy
      (±1 digit) | O2
      concentration ±0.5% of value | O2
      concentration ±0.5% of value | 
  
    | O2
      saturation ±0.5% of value | O2
      saturation ±0.5% of value | 
  
    | . | O2
      part. press. ±0.5% of value | 
  
    | temperature
      ±0.1 K | temperature
      ±0.1 K | 
  
    | Temperature
      compensation | 2%
      at 0 ... +40 °C | 
  
    | Air
      pressure compensation | automatic
      with built-in pressure sensor (500 ... 1100 hPa) | 
  
    | Salinity
      correction | 0
      or 35.0 solid SAL | automatic
      from 0.0 ... 70.0, adjustable via display | 
  
    | Display | LCD
      display 60 x 45 mm visible area, simultaneous display of measurement,
      temperature, special characters | 
  
    | Sensor
      evaluation | depends
      on calibration results, shown on display | 
  
    | Calibration
      alarm | 1
      ... 999 days, adjustable | - | 
  
    | AutoRead | for
      reproducibility better than 0.05 mg/l | 
  
    | Calibration | OxiCal®
      rapid calibration in OxiCal®-SL or OxiCal®-D | 
  
    | Calibration
      – protocol | - | - | GLP-conform
      calibration protocol; last protocol stored in memory | 
  
    | Data
      storage | – | - | 500
      data sets (measurement, temperature, date/time, identity no.); time-controlled
      storage at intervals 5 s ... 60 min, non-volatile data storage (even when
      changing batteries) | 
  
    | Data
      output | via
      display | via
      display or interface | 
  
    | Interface | - | - | self-configuring analog output
      0 ... 2 V corresponding to display, or RS 232 bi-directional interface | 
  
    | Operating
      time | 2000 hours with
      normal 4 x 1.5 V batteries continuous operation from mains with
      AutoSwitchOff after 1 h (except logger operation)   | supply;
      600 hours with battery operation with  AutoSwitchOff after 1 h(except
      logger operation) | 
  
    | Protection
      type | IP
      66 and IP 67 to IEC 529 | 
  
    | Dimensions | 172
      x 80 x 37 (H x B x D) | 
  
    | Weight | approx.
      300 g | 
  
    | Certified
      to | CE,
      TÜV/GS, UL, CUL | 
  
    | Warranty | 3
      years on the instrument |