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2. Operating Modes
The function switch is used to select the required mode. The four operating modes
available are…
1.
SET LIMIT
: Switch to
SET LIMIT
when setting the Dissolved Oxygen
value at which the Alarm LED and (optional) relay output are
activated. The relay output is not operational in this mode.
See section 0.
2.
STANDBY
: Switch to
STANDBY
to inhibit the Alarm LED and
(optional) output relay action. Select this mode for
calibration, or when automatic dosing is not required.
3.
AUTO
: Switch to
AUTO
to enable the Alarm LED and (optional)
relay output. These will be activated when the Dissolved
Oxygen is outside the limit value. See section 0.
4.
MANUAL
: Switch to
MANUAL
to manually switch on a control device
or alarm when the optional relay output is fitted. The relay
output will be activated for as long as the
mini
CHEM
-DO
2
is
in this mode, regardless of the Dissolved Oxygen reading.
See section 7.
