Spectrum 2220, Руководство по эксплуатации продукта

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5
Taking and Data Logging Measurements
When the probe is inserted in soil or water, the me-
ter’s LCD will immediately begin indicating the EC.
When this value stabilizes, the meter locks on to that
value and the LCD will display READY in the upper
right corner. To capture this value with
the data logger, press the
HOLD/
ENTER
button followed by the
Print
button. The
Print
button is on the
lower right corner of the keypad next to
the
Range
button.
If the readings are not being geo-referenced, the
green LED will briefly flash off and then back on. If
the readings are being geo-referenced (see GPS
Connection, p. 10) and a GPS signal is found, the
green LED will turn off for a slightly longer time, then
glow steadily. If the readings are being geo-
referenced but no GPS signal is found, the LED will
flash 3 times, then glow steadily. In this case, the
EC reading will be recorded without latitude/logitude
values. Check the GPS battery status as well as the
connection to the data logger.
Measuring Range
The meter has 5 EC measuring ranges (listed in sec-
tion 4.1 of the accompanying meter instruction man-
ual). When using the 2.76 mS/cm calibrating solu-
tion, the meter should, ideally, be in range r4. How-
ever, the range the meter is using is not generally
visible on the LCD. Pressing the
Range
button al-
lows the user to manually select a different range.
When the
Range
button is pressed, the meter will
transition to the next range which will briefly be dis-
played on the LCD in place of the temperature.
When initially inserted into a sample, the meter will
transition to the most appropriate range.
Print button