5
Thermo Scientific Orion AQUAfast AQ3010 Turbidity Meter User Guide
Figure 3
Keypad
read
enter
cal
Turbidity Meter
Chlorine Colorimeter
read
enter
zero
mode
Keys and
Functions
The keypad has five keys:
ON/OFF
,
CAL
,
▲
,
▼
and
READ/ENTER
.
Key
Functions
CAL
READ
ENTER
Powers on and off the meter. The meter automatically
shuts off 20 minutes after last key press to conserve the
battery life.
CAL
READ
ENTER
Initiates the calibration mode of the meter. When pressed,
the meter is set to accept the first calibration standard.
It is also used to exit the calibration mode if the user does
not want to follow the complete calibration procedure.
CAL
READ
ENTER
When in measurement mode, the
READ/ENTER
key is used
to perform a measurement.
Single-shot measurements: When the key is pressed and
released immediately (a quick key stroke of less than 0.3
seconds), the display will blink [-Rd-] ten times and display
the measured value.
Continuous measurements: If the
READ/ENTER
key is
pressed and held, the instrument will perform a continuous
measurement during which the display is updated every
2 seconds. This can be used for indexing vials. (This
function is not available in calibration mode). After
the
READ/ENTER
key is released, the instrument will
automatically perform a single-shot measurement.
CAL
READ
ENTER
CAL
READ
ENTER
Active only during calibration mode. These scroll keys are
used to select the next calibration point.
Note: After the successful calibration of one point, the
meter automatically selects the next calibration point, or
automatically exits the calibration mode after the fourth
calibration point.