Section 4 Operating Instructions; Operating Controls - Hach ORBISPHERE 3654 User Manual

Section 4

4.1 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 (g/kg, V/V, etc.) depending on the
instrument configuration. To the LCD's right is a label showing the measurement units
configured at the factory for your application.
Figure 4 Instrument front panel
In addition to the controls indicated on the front panel, there is also a pressure relief valve on
top of the instrument. Refer to
installation procedures, and/or if pressure builds up inside the instrument due to large
temperature changes.
The panel keyboard has the following push-button controls:
Operating Instructions
Power switch. Turns instrument power on or places in standby. When
switched on, the instrument performs a series of start-up procedures
before switching to measurement mode
Places the instrument in measurement mode
Calibrates the analyzer against a reference sample. This button can be
locked out using the WIN3654 PC program
Stores a measurement value into memory
Backlights the LCD for approximately three minutes. Push repeatedly to
increase the backligth to the maximum value and back to minimum.
4 on page 9. This button need only be pressed as part of the
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