INCREASE THE SENSOR SAMPLING PERIOD
1. Go to the sonde’s Advanced Menu, then to Data Filter. Verify that the Data Filter is enabled.
2. Go to the Time Constants Menu.
3. Select the turbidity sensor and change the time constant from 12 to 30 seconds and press Enter.
4. If you have chlorophyll, blue-green algae, or optical DO, then you can improve the performance
of these sensors as well by changing them to 30 seconds.
5. Before you exit out of the Advanced Sensor Menu, select “Sensors” and confirm that the
Turbidity Spike Filter is enabled.
Note: There will be a decrease in battery life when the sampling periods are increased.
Note: Increasing the data filter time constant will require that you wait for the longest time constant to
elapse before accepting a calibration point or when looking at real-time data.
SET UP AND PREPARATION
• The sonde and sensors MUST be clean.
• Install clean wipers or remove the wipers completely.
• EDS brush or V2-4 pH brush wipers must be removed.
• The cal cup MUST be clean and free of dust, dirt, sediment etc.
• Use lint-free cloths to clean and dry the sensors and cal cup.
• Wipe off any fingerprints or smudges from the optics.
• In most cases a two-point calibration is acceptable. Use the 126 standard for the second point to
avoid settling issues with Formazin. It is acceptable to calibrate the YSI turbidity probe in properly
diluted Formazin or Hach StablCal turbidity standards as long as the standards stay properly mixed.
• Wait at least 60 seconds after a wipe cycle before accepting a calibration point. Make a visual check
for air bubbles near the optics.
• If calibrating with Formazin, then make all measurements within 2 minutes or settling could change
the value of the standard!
• Do not substitute the cal cup with glassware or plastic containers unless you plan on calibrating with
the sensor guard installed.
• Calibrate in controlled and clean conditions.
INDENTIFY YOUR SONDE TYPE, REVIEW NOTES, & PERFORM INITIAL CALIBRATION
6600 Sondes: Original 2 port, EDS,V2-2 and V2-4 - If you do not own a long calibration cup you need
to acquire one. Calibrating in the original short cup will result in a negative -1.5 NTU offset when in
zero NTU water. The long cup part number is p/n 116275; it measures 9.5 inches in length. If you do not
have access to a long cup, then you can calibrate the probe using a clean sensor guard.
(continued)
11
(43 Seiten)
(184 Seiten)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Kommentare zu diesen Handbüchern