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PROBE DEPLOYMENT
14. PROBE DEPLOYMENT
The Hanna Instruments HI7698494 multi-sensor probe has been designed for a variety of water
quality measurements both in situ or in active deployments in urban or natural waters. Data quality is
dependent upon the site location, service intervals, amount of coatings, sedimentation and vegetation,
and the actual installation.
The deployment location must be accessible for the duration of the measurement (consider seasonal
flooding, freezing and other acts of nature) when selecting a site.
The probe may be installed in a horizontal bank (fixed installation) or a vertical suspension (maximum
depth of 20 m). Unlike probes that require a cable support for active deployments the probe can be
manually lowered and raised by the cable due to its superior strength.
To protect the equipment avoid exposure to wind, sun, foam, turbulence, air temperature gradients,
extended periods of high flow, extended periods of high sediment and floating debris.
The probe is suitable for installation in:
• Confined locations such as air vaults, river intakes, vertical wells, tanks
• Open moving waters locations such as rivers, streams, ditches (farmland drainage), conveyance
canals
• Open waters locations such as lakes, ponds, wetland basin, infiltration basins, bays
• A flow cell
During long deployments, the instrument can be secured by the metallic eyelet at the top.
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