Xylem WQL-pH pH DATALOGGERS - Manual (Page 39)

WQL-pH Measuring directly
113 ba75821e01 10/2009
6 Measuring directly
In conjunction with the pH logger, the WQL-Log PC program can directly
measure and display the pH value or corresponding electrode voltage of a
solution. The directly measured values are not stored in the logger.
Proceed as follows when you want to measure directly:
Note
During calibration and direct measurement make sure that neither the
calibration or measurement solution nor the logger shaft are electrically
grounded (e.g. with a metal stand). Otherwise, this could result in erroneous
values.
1 Connect the WQL-pH logger to the PC with the USB cable.
2 In the Device/Login menu, connect the logger to the WQL-Log PC
program.
3 If there are any logged data, import them with the query (direct
measurement is not possible without importing the logged data ).
4 In the Device menu, click the Measure menu item.
5 Immerse the WQL-pH logger (with installed electrode) in the test
sample.
6 The measured value window pops up with the pH or mV value
(depending on the setting) and the temperature value of the test
sample.
7 Terminate the direct measurement with Quit.