153 Measuring with Optical Dissolved Oxygen (DO) Probes
Averaging Samples
Option: 1 to 60
Average sampling is a software filter to minimize sensor noise and provide more stable readings. Allows users
to get a representative reading of the “average” value from flowing water.
Averaging affects measurement. If a fast response is needed, this value should be kept low.
• With item selected, press Set.
• Use the
ud keys to modify the number of samples.
• Press CFM to save.
Salinity Source
Option: Setup, Probe
Selects the source for salinity compensation.
• With Salinity Source selected, press Setup to use the Salinity Factor value.
• With Salinity Source selected, press Probe to use the salinity value from a connected EC probe.
24.5. CALIBRATION
HI520 process controller allows two types of dissolved oxygen calibration procedures:
•
Standard single or two‑points calibration using water‑saturated air or air‑saturated water and a zero‑
oxygen solution to verify that the probe is working correctly and establish a slope
•
Process single‑point calibration performed with the calibrated probe (two points) installed in the process.
Process calibration allows the user to adjust the measured DO value to match the value determined with
a reference device.
Notes: See 6.1 Probe Settings Navigation for Temp. Offset & Temperature Calibration Procedure section.
To calibrate the internal pressure sensor, see Pressure Calibration in 13 Technical Menu section.
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