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3650 Portable O2 Analyzer - Operating Information 13 of 50
Operator Manual
ORBISPHERE
2 Operating Information
2.1 Operating Controls
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, or %)
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 (as indicated in Fig 1-1 on page 7) 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:
Fig 2-1: Instrument Front Panel
Power switch. 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