Hach ORBISPHERE 3650 ATEX Manuel D'utilisation De Base page 12

5.7 Storage when not used
At the end of the workday clean the outside of the instrument and interface box (if used) with a damp
cloth. Run clean water through the flow chamber to prevent passageways from clogging. You may
wish to repeat sensor preconditioning (see
use.
If you do not expect not to use your sensor for more than a few months, you should clean the sensor
as instructed in the Sensor Manual and then store it dry, without electrolyte, and with the calibration
cap in place for protection.
Section 6 User interface
6.1 Keypad and function keys
The front panel of the instrument has a three-digit liquid crystal display (LCD). The LCD includes a
right-side marker to distinguish between gas concentration and temperature display. This marker
also indicates the measurement display units (ppm, ppb, %, etc.) depending on the instrument
model. To the LCD's right is a label showing the measurement units configured at the factory for your
application.
In addition to the controls indicated on the front panel, there is also a pressure relief valve switch on
top of the instrument to enable atmospheric pressure equilibrium for sensor calibration, or for
measurements in gaseous samples in % units. The panel keyboard has the following push-button
controls:
Power switch. This turns instrument power on or off. The instrument starts in measurement mode
Places the instrument in measurement mode
Calibrates the analyzer against a reference sample. This button can be locked out from the
WinLog97 PC program
Stores a measurement value into memory
Backlights the LCD for approximately three minutes
Toggles between gas concentration and temperature measurement displays in measurement
mode, increases or decreases the storage number during storage or memory view, or sets a
calibration value during calibration
To start the analyzer, press the keyboard POWER switch (located bottom left of the keyboard). When
you turn power on, the instrument displays its model number briefly, and then starts in measurement
mode. You can access other instrument functions by pushing one of these keys while turning power
on:
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Preconditioning sensors on page 13) prior to the next