YSI 6000UPG - Manual (Page 35)

3-3
The number in parentheses is the default value of this parameter and will be used in the calibration
if only Enter is pressed without typing in another value. Remember that this entry should reflect
the actual value of your solution and that entry of values other than the default may be necessary.
Similar prompts will be displayed for calibration of all parameters.
After the calibration value is input (or the default accepted) and Enter is pressed, a real-time
display similar to that shown above will appear on the screen. Note that all parameters which have
been enabled will appear, not just the one being calibrated at the moment. You should carefully
observe the stabilization of the readings of the parameter which is being calibrated and, when the
readings are stable for approximately 30 seconds, press Enter to accept the calibration. The
acceptance will be acknowledged and calibration of the chosen sensor is complete. Then, as
instructed, Hit any key to return to the Calibrate menu.
NOTE: If an ERROR message appears, begin the calibration procedure again. Be certain that the
value you enter for the calibration standard is correct. Also see Section 8, Troubleshooting for
more information on error messages. If error messages continue to be observed during calibration,
contact YSI Customer Service (see Appendix C for contact information).
CAUTION: With rare exception, be certain to immerse the entire array of sensors in solution
standards for calibration of all parameters. Most calibrations require readings not only from the
sensor being calibrated but also from the temperature sensor. Temperature compensation is an
important criterion in nearly all of the calibration procedures. In addition to temperature, the
conductivity reading of the standard is required in several calibration routines and the reference
electrode of the pH probe must be in the same solution as the nitrate and ammonium sensors for
proper function.
Specific start-up calibration procedures for all sensors which commonly require calibration are
provided in the following paragraphs of this section. Remember that these are basic protocols
designed to get the user up and running with regard to the 6000
UPG
. The more-detailed discussion
of sensor calibration found in Section 4.2 should be examined prior to use of the instrument in the
field.
NOTE: If the particular sensor listed is not installed in your sonde, proceed to the next sensor until
the calibration protocol is complete.
========================================================
Date Time Temp SpCond Sal DO pH Batt
MM/DD/YY hh:mm:ss C mS/cm ppt % V
--------------------------------------------------------
To calibrate, press <Enter> when the readings are stable.
05/22/96 09:53:43
27.73 5.05 2.72 54.9 8.73 12.2