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        | Determination of the conditions of life for fish and microorganisms in waters |  | FYA640O2 Oxygen 
Sensor Type
 
  
    |  
 Applications:
 Determination 
      of the conditions of life for fish and microorganisms in waters and fish 
      tanks, biological treatment of municipal and industrial waste water,
 storage of organic liquids, examinations of drinking water, control of corrosion 
      processes in heating system lines, examination of quality-keeping of beverages.
 
 Accessories:
 
 
         
          | ZB 9640 AS | Adjustment set consisting of: 25g sodium sulphite in 20ml PE bottle for preparation of the null 
            solution, vessel for adjustment of the saturation level
 |   
          | ZB 9640 NS | 25g sodium sulphite in 20ml PE bottle |   
          | ZB 9640 NL | 20ml filling solution in PE bottle for O2 probe |   
          | ZB 9640 EM | Spare membrane cap with protection (2 pieces)
 |  
 
         
          | Type: |   
          | FYA640O2 | Oxygen sensor for O2 measurements in 
            liquids incl. connecting cable 1.5m long with ALMEMO¢ç connector |  | 
         
          | Technical Data: |   
          | Measuring ranges: Temperature range:
 O2 saturation:
 O2 concentration:
 | -5.0 ¡¦ 50¡ÆC 0 ¡¦ 260% saturation
 0.0 ¡¦ 40mg/l (5 ¡¦ 40¡ÆC)
 |   
          | Measuring principle: | Clark |   
          | Working electrode: | Pt cathode |   
          | Reference electrode: | Ag/AgCl counter electrode |   
          | Membrane: | Teflon |   
          | Response time (t90%): | approx. 10-15s |   
          | Zero current at 0% saturation: | < 5nA |   
          | Meas. current at 100% saturation: 
            approx. 700nA |   
          | Accuracy, oxygen measurement: | < ¡¾ 1% of measured value |   
          | Velocity in blower stream: | approx. 10cm/ |   
          | Storage temperature: | -10 ¡¦ 50¡ÆC |   
          | Insertion depth: | 40mm |   
          | Filling volume (electrolyte): | 0.6ml |   
          | Temperature sensor: | NTC type N (10k at 25¡ÆC) |   
          | Accuracy of temp. measurement (at nominal conditions):
 | -20 ¡¦ 0¡ÆC: ¡¾0.4¡ÆC,
 0 ¡¦ 70¡ÆC: ¡¾0.1¡ÆC
 |   
          | Nominal conditions: | 25¡ÆC ¡¾3¡ÆC/1013mbar |   
          | Shaft material: | PVC, black |   
          | Membrane cap: | replaceable (spare) |   
          | Shaft length/shaft diameter: | 145mm/12mm |   
          | Connecting cable: | 1.5m long with ALMEMO¢ç connector
 |   
          | Polarisation voltage: | 650mV |   
          | Service life (with one electrolyte filling):
 | several months
 |   
          | Total service life (durability): | several years |  |  |  |  |  |  |  
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