In-Situ Monitoring of Total Alkalinity
Alkalinity Sensor at a Glance:
- – Accurate measurement of microfluidic alkalinity over the range 1500-2500 µmol / kg
- – Measurement calibrations against certified reference materials
- – Programmable sample rate and concentration range
- – Technology Flexibility: An excellent contender for towed systems, un-crewed vehicles, gliders, ROVs, Voluntary Observation Ships, buoys, and profiling floats
- – Customizable and configurable to fit into most platforms
Features:
- – Alkalinity Sensor
- – Rigid Reagent Housing
- – Self-Contained
- – 275 samples / 25 standards per reagent load*
- – Programmable sample interval & range
- – Easy transport and deployment
- – Flexible mounting configurations
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Options:
- Optional power from platform or battery pack
- Dual- and Tri-case mounting brackets
Product Specifications
Weight
- In Air: 5 kg (11.0 lbs)
- In Salt Water: 1.8 kg (4.0 lbs)
Dimensions
- Diameter: 89 mm (3.5 in)
- Length: 442 mm (17.4 in)
Depth Rating: 200 m (656 ft)
Sample Rate: 1 sample every 20 minutes to 1 sample per day (programmable)**
Temperature Range: 5-25°C
Intake Filters: 25mm – 0.45µm pore size (default)
Instrument Precision: 16 µmol/kg
Power Draw: 1 W (typ) to 10 W (max)***
Reagents:
- – Reagents: 0.01 mol/kg HCl with 20 µmol/kg bromocresol green indicating dye
- – Standards: Prepared Na2 CO3 solution or certified reference material
Data Output:
- – Ethernet, RS232
- – Binary, Hex
Concentration Range:
- – 1500-2500 µmol/kg (default)
- – Programmable to different ranges in situ
Options:
- – Mounting brackets
- – Software visualization
- – Real time data output
- – External battery case (Lithium Primary)
- – Rigid, floodable reagent case
* Based on current reagent volumes of 500 ml titrant & 250 ml standard
** Standard sample processing time is currently 20 minutes per sample
*** Total number of samples processed will depend on sampling frequency; each measurement consumes about 4.4 kJ of battery energy
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