YSI 6000UPG - Manual (Page 33)

3-1
3. BASIC OPERATION
In the previous Section, you learned how to install probes and set up the PC6000, Ecowatch for
Windows, and 6000
UPG sonde software. In this section, you will learn how to calibrate and run the
Model 6000 UPG and how to view your data on a computer display. If you choose to use your
6000 UPG with a 610-series display/logger, refer to the operations manual for the 610 to obtain
similar instructions to those provided below.
3.1 GETTING READY TO CALIBRATE
WARNING: Reagents used to calibrate and check this instrument may be hazardous to your health.
Refer to Appendix A for health and safety information.
Before you begin the calibration procedures outlined below, you may find it helpful to follow some
or all of these calibration tips.
1. You will need one or more containers to hold calibration standards. YSI provides a calibration
cup, but a standard 800 mL beaker also works well.
2. If you use the 6000 UPG Transport Cup for dissolved oxygen calibration, make certain to loosen
the seal to allow pressure equilibration before DO calibration (water-saturated air calibration).
3. For maximum accuracy, the use of a small amount of previously-used calibration solutions to
prerinse the sonde is suggested. You may wish to save old calibration standards for this purpose.
4. Fill a large bucket with ambient temperature water for rinsing the sonde between calibration
solutions.
5. Have several clean, absorbent paper towels or cotton cloths available to dry the sonde between
rinses and calibration solutions. It is important to remove as much residual liquid as possible from
the sonde after each rinse. Shake the sonde to remove excess rinse water from the inside of the
guard. Then dry the outside of the sonde and probe guard. Drying the sonde and probes in this way
reduces carry-over contamination of calibrator solutions and increases the accuracy of the
calibration, particularly when using lower conductivity calibration standards.
6. It is not necessary to remove the probe guard to rinse and dry the probes between calibration
solutions. The inaccuracy resulting from simply rinsing the probe compartment and drying the
outside of the sonde is minimal.