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Summary of Contents for idronaut OCEAN SEVEN 306
- Page 2 Idronaut S.r.l. waives responsibility of any labour, materials, or costs incurred by any person or party as a result of using this document. Idronaut S.r.l. shall not be liable for any damages (including, but not limited to, consequential, indirect or incidental, special damages, or loss of profits or data) even if they were foreseeable and Idronaut S.r.l.
- Page 3 Use it to understand the purpose of each of the OCEAN SEVEN 306 probe components and functions. It will help you to understand the OCEAN SEVEN 306 probe behaviour. It will serve you as a reference when some problems arise when using the OCEAN SEVEN 306 probe. Software updates and technical support Please visit our website download area for software updates and technical support: http://www.idronaut.it...
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Page 4: Table Of Contents
SENSOR 6.2.1. To etch the sensor, perform the following: 6.2.2. Important remark on the pH measurement 6.3. REDOX SENSOR OCEAN SEVEN 306 – ELECTRONIC SCHEMATICS 7.1. CUSTOMIZATION of the pH SENSOR MEASURING RANGE 7.2. DETERMINATION OF THE pH SLOPE FACTOR IDRONAUT –... -
Page 5: Introduction
0..5V and allows the in situ determination of pH and redox (oxidation reduction potential) in natural waters as oceans, lakes, rivers and estuaries, at depths down to 600 bar. The OCEAN SEVEN 306 pH and redox combined sensor, is specifically designed to simplify the integration in CTD probes. -
Page 6: Reference Sensor
OCEAN SEVEN 306 - pH and redox probe 1.1.2. Reference sensor Internal cell: Ag/AgCl filled with solid gel. Max pressure: 700 bar. Sensor body: titanium. Life: 1 year if intensively used for monitoring, up to 2 years if used weekly for daily profiling or monitoring. -
Page 7: Technical Specifications
OCEAN SEVEN 306 - pH and redox probe potential of the reference electrode with respect to hydrogen must be always added to the value measured by our probe. When using reference electrodes different from the hydrogen ones, it is usual practice to present data as Eh by obviously taking into account the potential of the reference electrode with respect to the hydrogen electrode. -
Page 8: White Pom Housing - 150 Bar
OCEAN SEVEN 306 - pH and redox probe Connectors: Bulkhead male connector: IMPULSE IE55-1206-BCR Dummy connector: IMPULSE IE55-1206-SCP Mating female pigtail (1.8m): IMPULSE IE55-1206-CCP Bulkhead male connector pin-outs: Pin 1: power GND Pin 2: analogue GND Pin 3: pH 0..5V analogue output Pin 4: power supply 12VDC (11..15 VDC) - Page 9 OCEAN SEVEN 306 - pH and redox probe IDRONAUT – Brugherio (MI) OCEAN SEVEN 306 12-2015...
- Page 10 OCEAN SEVEN 306 - pH and redox probe Mechanics: Probe housing: POM white plastic, 150 bar (1500 m depth) Sensor heads: titanium Probe diameter: 75 mm Probe length: 480 mm (including hanging rod) Probe weight: 1,7 kg in air 0,7 Kg in water...
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Page 11: Sensor Wiring
OCEAN SEVEN 306 - pH and redox probe 1.4. SENSOR WIRING IDRONAUT – Brugherio (MI) OCEAN SEVEN 306 12-2015... -
Page 12: Shipping List
DAILY OPERATIONS The OCEAN SEVEN 306 pH and reference sensors are protected by hydrating caps which prevent the sensors from dehydration. First of all, remove the hydrating cap and soak the sensors with water. If needed, carry out a pH sensor calibration (see calibration section) and then connect the pH &... -
Page 13: Ph Buffer True Value
If the variation voltage is greater than 70% of the pH sensor slope, the reference is contaminated or exhausted and must be replaced. Thus: ΔV = V – Nominal V OUTpH7 The below table resumes the maximum permitted variation voltage for each OCEAN SEVEN 306 measuring range. Measuring range Nominal VOUT Nom. slope Max. ΔV 0..14 pH... -
Page 14: Redox Calculation
OCEAN SEVEN 306 - pH and redox probe Temperature Sample temperature in °C. 58.168 Nerst constant at 20° C. 54.2 Nerst constant at 0° C. 0.1984 V per pH unit per °C. The above calculation is based on the following assumption: The NERST equation, E = E0 + 2.303 RT/nF log a, predicts the theoretical output of any electrochemical cell. -
Page 15: Maintenance
6.1. REFERENCE SENSOR During all periods of non use, the reference sensor must be always hydrated with the IDRONAUT REFERENCE SENSOR STORAGE SOLUTION or, if not available, even with a KCl saturated solution, using its plastic hydrating cap. Fill the cap to about one third with the solution. The cap should be squeezed in order to allow an easy insertion. -
Page 16: Important Remark On The Ph Measurement
The caps must be respectively filled with pH7 Buffer Solution (or simply with clean water) and Idronaut Reference Sensor Storage Solution (or even with KCl saturated solution). Alternatively for a short time (i.e. half a day), immerse the probe sensor head in clean water to prevent the pH and reference sensor dehydration. -
Page 17: Ocean Seven 306 - Electronic Schematics
OCEAN SEVEN 306 - pH and redox probe 7. OCEAN SEVEN 306 – ELECTRONIC SCHEMATICS IDRONAUT – Brugherio (MI) OCEAN SEVEN 306 12-2015... - Page 18 OCEAN SEVEN 306 - pH and redox probe IDRONAUT – Brugherio (MI) OCEAN SEVEN 306 12-2015...
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Page 19: Customization Of The Ph Sensor Measuring Range
“R10”. After the modification, it is mandatory to calculate the new SLOPE factor. 7.2. DETERMINATION OF THE pH SLOPE FACTOR The OCEAN SEVEN 306 pH electronic preamplifier is linear and therefore the SLOPE can be calculated by using two pH buffers only. To obtain the SLOPE, proceed as follows: ...
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