Xylem YSI Pro20, Быстрый старт

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DO Calibration
The Pro20/Pro20i can be calibrated in % saturation, mg/L, or ppm. Calibration of any
option (%, mg/L, or ppm) will automatically calibrate the others. The Pro20/Pro20i can
be calibrated with the press of one key when One Touch Cal is enabled in the System
Setup menu.
The following procedure outlines the % saturation calibration option with and without
One Touch Cal enabled.
1.
Moisten the sponge in the cal/transport sleeve with a small amount of water
and install it on the probe. The cal/transport sleeve ensures venting to the
atmosphere.
Make sure the DO and temperature sensors are not immersed
in the water.
2.
Turn the instrument on. If using a polarographic sensor, wait 10 minutes for the
DO sensor to stabilize. Galvanic sensors do not require a warm up time.
3.
Ensure the barometer reading and salinity correction values along the bottom of
the screen are accurate.
4.
Press and hold the Cal key for three seconds.
5.
If One Touch Cal is enabled, the instrument will indicate Calibrating %DO on
the display and automatically calibrate the sensor to the barometer reading and
salinity correction value.
6.
If One Touch Cal is not enabled, highlight
%
or
%Local
and press
Enter
. The
Pro20/Pro20i will display the current DO% and temperature readings along
with the % calibration value. Wait at least 3 seconds, then, once the DO% and
temperature readings are stable, press
Enter
to complete the calibration.
7.
Calibration Successful will display for a few seconds to indicate a successful
calibration and then the instrument will return to the run screen.
8.
If the calibration is unsuccessful, an error message will display on the screen.
Press the
Cal key to exit the error message and return to the run screen.
Salinity Compensation Calibration
The Pro20/Pro20i uses an inputted salinity value in ppt (parts per thousand) to
compensate dissolved oxygen mg/L values.
2.
From the run screen, use the up or down arrow keys to highlight the barometer
box then press enter.
3.
Use the up or down arrow keys to adjust the barometer reading to the local,
true barometric pressure .
4.
Press enter to confirm and save the barometer adjustment.