Operation; Getting Started; Automatic And Manual Ranging - Extech Instruments EC170 User Manual

Operation
Getting Started
1. Remove the probe's protective cap (bottom of meter) by pulling the
cap firmly downward, away from meter, until it snaps off (see diagram).
2. Press the power button to power ON the meter. The meter display
will cycle through several icons (representing the current configuration
of the meter) before settling on the main display as shown in the
display description above.
3. Press the power button momentarily to power OFF the meter.
4. This meter is powered by four (4) LR44 buttons batteries. If the meter will not switch ON
please check that fresh batteries are installed.
Automatic and Manual Ranging
There are two ranges available Range 1 (0.00 to 10.00 ppt) and Range 2 (10.1 to 70.0 ppt). The
meter defaults to the AUTO Range mode where one of these two ranges is selected
automatically to provide the best resolution and accuracy for each given measurement.
However, MANUAL Range mode can also be used where range 1 and range 2 can be selected
manually.
5. Press and hold the
right of the LCD and 'ran' (range) will appear at the center of the LCD.
6. Release the button and the meter will be forced into range 1.
7. Press and hold the UP arrow button again, the number 2 (range 2) will appear on the lower
right of the LCD and 'ran' (range) will appear at the center of the LCD.
8. Release the button and the meter will be forced into range 2.
9. Press and hold the UP arrow button again, 'ATo' will appear on the lower LCD area indicating
that the meter is once again in the AUTO Range mode.
10. Release the button to end the range setting session or return to step 1 to repeat this
process.
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UP arrow button, the number 1 (range 1) will appear on the lower
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