HyQual Multi-probes User Manual v3, 08.07.2022
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If you will be using an Underwater Cable, you can run power to the HyQual probe from a surface power
supply to provide power to HyQual
–
you don’t need a
HyQual Battery Pack.
Or, the surface power supply can power HyQual with the optional internal lithium battery pack, thus
saving your batteries for emergencies such as the failure of the surface power supply.
Either way, you will end up with data records in both the HyQual probe and the third-party device.
6.2.4
On-Line Monitoring
On-Line Monitoring, also known as process-control monitoring, means that the HyQual probe is con-
nected to a PLC, SCADA system, etc. An example is monitoring the input to a water-treatment plant for
salinity or chlorophyll. On-Line Monitoring allows you to make water-quality-based decisions in real-
time. The HyQual probe is particularly effective in this application when more than one parameter is
needed in the control loop or decision-making process.
Maintenance
7.1
When to proceed to maintenance?
Judgment gained from observing your field conditions and data requirements provides information
about when to maintain sensors. If you are logging data over long periods, the time when you collect
your data from the HyQual probe is a good time for maintenance and calibration.
7.2
Maintenance
–
1: Keep your device clean
Clean your instrument periodically with warm soapy water - liquid dishwashing soap is fine. Do not use
abrasives or strong solvents (such as acetone). Do not clean with gasoline, kerosene, or industrial clean-
ers. Mild household cleaners work well. You can clean sensor stems with a soft brush, but use only a rag
or paper towel when cleaning the sensor’s actual measurement surface.
Figure 2
–
Rinsing a HyQual multiprobe
Rinse the HyQual probe well with tap water after cleaning, and store sensors with a few ounces of tap
water in the Storage/Calibration Cup.
If you take the HyQual probe apart and expose O-rings, keep them, and their mating surfaces, greased
with silicon grease (found in your Maintenance Kit). The same applies to your Underwater or Data Ca-
ble’s lower connector. Replace any
O-rings with visible cracks.
