HydroFIA - Model TA - Flow Through System Brochure

HydroFIATM TA Analyzer for total alkalinity in seawater The CONTROS HydroFIATM TA is a flow through system for the deter- mination of the total alkalinity in seawater. It can be used for con- tinuous monitoring during surface water applications as well as for discrete sample measurements. The autonomous TA-analyzer can be easily integrated into existing automated measuring systems on volun- tary observing ships (VOS) such as FerryBoxes. Fields of application includes: ocean acidification and carbonate chemistry research, monitoring of biogeochemical processes, aquaculture / fish farming and pore water analysis. The analyzer was motivated and supported by initial investigations carried out at the Helmholtz Centre for Ocean Research Kiel (GEOMAR) and the Helmholtz-Zentrum Geesthacht (HZG). HOW IT WORKS A defined amount of seawater is acidified using diluted hydrochloric acid (HCl). After acidification the generated CO2 in the sample is removed resulting in a so called open-cell titration. The subsequent pH determination is carried out by means of an indicator dye and VIS absorption spectrometry. Together with salinity and temperature the resulting pH is directly used for the calculation of TA. ADVANTAGES ? Fast measurement cycles (5 min) ? Robust pH determination using absorption spectrometry ? Low sample consumption (<100 mL) ? Low reagent consumption (<100 µL) ? ‘Plug and Play‘ reagent cartridges ? Minimized bio-fouling effects due to acidification of the sample ? Autonomous long-term installations ACCESSORIES In combination with the HydroCTM CO2 or the flow through version of this sensor the HydroFIATM TA is ideally suited for carbonate system determinations. Sensors for oxygen will also enhance the carbon cycling investigation capabilities. CONTROS furthermore provides all kind of cables for laboratory and field work, along with subsea power options. HydroFIATM TA DETECTOR VIS absorption spectrometry SYSTEM Temperature stabilized bench-top system FIELD APPLICATION Surface water TEMPERATURE RANGE 0 °C to +35 °C SALINITY RANGE 29 psu to 37 psu MEASURING RANGE 400 µmol/kg dynamic range Standard range is 2000 µmol/kg to 2400 µmol/kg RESOLUTION 1 µmol/kg ACCURACY ± 1 % PRECISION ± 0.2 % MEASUREMENT CYCLE 5 min POWER SUPPLY 100 V to 240 V AC DATA INTERFACE RS-232 or Ethernet, other options are available on request; Data format ASCII FAST FACTS OPTIONS ? Integration into automated measuring systems on VOS (e.g. FerryBoxes) ? Cross-flow filters for high turbidity / sediment loaded waters ? External pump ? Easy integration together with a HydroFlashTM O2 and the HydroCTM CO2 and CH4 family CONTACT US CONTROS Systems & Solutions GmbH Wischhofstr. 1-3 | Bld. 2 | 24148 Kiel | Germany p: +49 [0] 4 31 26 09 59 00 | f: +49 [0] 4 31 26 09 59 01 e: contact@contros.eu | www.contros.eu Specifications subject to change without notice. ©2014 CONTROS Systems & Solutions GmbH, Inc. All rights reserved. Rev. August 2014.