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Data Harvest Group Ltd.
1 Eden Court, Leighton Buzzard,
Beds, LU7 4FY
Tel: 01525 373666
Fax: 01525 851638
e-mail: sales@data-harvest.co.uk
www.data-harvest.co.uk
Data Harvest. Freely photocopiable for use within the purchasers establishment
Oxygen Adaptor
(Product No. 3130)
Oxygen Electrode
(Product No. 3131)
DS 025
No 6
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Table of Contents
Summary of Contents for Smart Technology 3130
- Page 1 Oxygen Adaptor (Product No. 3130) Oxygen Electrode (Product No. 3131) Data Harvest Group Ltd. 1 Eden Court, Leighton Buzzard, Beds, LU7 4FY Tel: 01525 373666 Fax: 01525 851638 e-mail: sales@data-harvest.co.uk www.data-harvest.co.uk DS 025 No 6 Data Harvest. Freely photocopiable for use within the purchasers establishment...
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Page 2: Table Of Contents
Oxygen Sensor Contents Introduction ..........................2 STEP 1: Preparing the Oxygen electrode ................. 2 STEP 2: Connecting ........................3 STEP 3: Setting the range ......................3 STEP 4: Calibration ........................4 Practical information ........................4 Storage ............................5 Electrolyte ..........................5 Cleaning and maintenance ...................... -
Page 3: Step 2: Connecting
Oxygen Sensor escape. Unscrew slightly to release any pressure and then gently screw the cap on until it is just tight. Note: Do not over tighten – the membrane should not be pressurised (bulging away from the cathode tip), as it will become thin and oversensitive. STEP 2: Connecting ... -
Page 4: Step 4: Calibration
Oxygen Sensor 3. The current range will be highlighted. Select the required range and click on OK. Close Sensor Config. The range setting will be retained until changed by the user. With some EASYSENSE units it is possible to change the range from the unit. Please refer to the EASYSENSE unit’s user manual. STEP 4: Calibration Once the correct range has been selected then calibrate the electrode. -
Page 5: Storage
Oxygen Sensor The gas permeable membrane isolates the sensor elements from the solution on test but allows the oxygen to enter. This transport can cause the readings to begin to shift after 4 to 5 hours. If possible, recalibrate every two hours. ... -
Page 6: Electrode Specification
Oxygen Sensor Make up a paste of baking soda (bicarbonate of soda - NaHCO3) with some water, leave the tip in the paste for at least an hour then rub with some of the paste until the tip is clean and shiny. -
Page 7: Converting Dissolved Oxygen % Saturation Data To Oxygen In Mg/L
Oxygen Sensor A volume of water in contact with air will absorb air, and hence oxygen, until the pressure the absorbed oxygen exerts at the air-water interface equals the pressure exerted at the same interface by the oxygen in the air. At this point, the water is said to be saturated with oxygen. The amount of oxygen actually absorbed is quite small (about five to ten parts of oxygen to one million parts of water). -
Page 8: Troubleshooting
Oxygen Sensor The silver anode is held at a potential of +750 mV (the polarising voltage) with respect to the gold cathode. Oxygen is reduced at the cathode in the reaction: 2H + 4H + 4e creating a point of zero Oxygen tension (partial pressure) at the cathode. Provided that diffusion through the membrane is the rate-controlling step in the path of the Oxygen to the cathode, the signal current that flows from the anode to the cathode is proportional to the concentration (partial pressure) of Oxygen in the sample. -
Page 9: Limited Warranty
Oxygen Sensor Monitoring the pattern between light and changes in dissolved oxygen levels in an aquarium with pondweed Monitoring dissolved oxygen concentration resulting from photosynthesis and respiration in an aquarium containing plants and/or fish Discovering the change in oxygen level during combustion - using a candle burning in a bell jar Limited warranty For information about the terms of the product warranty, see the Data Harvest website at: https://data-harvest.co.uk/warranty.
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