Installation Checklist; Operating Controls - Hach ORBISPHERE 3658 Manuel D'utilisation Simplifié

Make sure you install a fully charged set of batteries, or connect the instrument to an external power
source (see External power supply (optional)
on and exposing the sensor's membrane to any liquid.

3.6 Installation checklist

3.6.1 Power
The instrument is designed to work on battery power or an external power supply.
If battery power should drop, a [LO BAT] warning appears in the instrument LCD's top left corner,
and they should be replaced.
If using an external power supply, ensure that this is clean, otherwise it may result in unstable
measurements.
3.6.2 Clock setting
If you use the instrument to store measurements for downloading to a PC, you should verify the date
and time settings of the instrument's internal clock, as described in
3.6.3 Barometric pressure setting
The internal barometric pressure sensor has been factory calibrated but should be verified on-site
with a precision certified barometer, and corrected if necessary. For instructions on how to do this,
please refer to Barometric pressure sensor calibration
3.6.4 Flow chamber
The flow chamber inlet and outlet should be free of any obstructions.
When analyzing carbonated beverages, sufficient pressure must be provided to avoid degassing of
the beverage during its passage through the flow chamber. Check for the absence of bubbles in the
inlet tubing.
If necessary, adjust the pressure using the flow adjustment valve.
Section 4 Operating Instructions
To avoid damaging the sensor, never remove the flow chamber during normal operation. The flow
chamber should only be removed during service procedures.

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.
In addition to the controls indicated on the front panel, there is also a pressure relief valve on top of
the instrument. Refer to
the 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:
Power switch. This 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
on page 8 for details) before switching the instrument
N O T I C E
Instrument overview on page 6. This button need only be pressed as part of
Clock settings
on page 17.
on page 24.
English 9