Taking Measurements - Hach ORBISPHERE3650 Manuel D'utilisation De Base

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:
Sensor calibration - see
Start automatic data acquisition - see
Start memory storage view - see
Display program identification information

Taking measurements

Once the system is calibrated, you should be able to begin taking measurements. Connect the top-
mounted inlet to accept your sample, typically this is accomplished by connection to a sampling
8 English
Sensor calibration on page 15
Automatic data acquisition
Viewing stored measurements
on page 9
on page 10