Aalborg DPM Series, Руководство по эксплуатации

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3600 seconds. The default value is 0: no delay.
f) Pressure Alarm Action Latch (Tabular entry)
The Pressure Alarm Action Latch settings control the Latch features. If SSR output is
assigned to the Pressure Alarm event, in some cases the Pressure Alarm Latch feature may
be desirable.
The following settings are available: Enabled or Disabled. By default, the Pressure Alarm is
non-latching, which means that the Alarm action is indicated only while the monitored
Pressure reading value exceeds the specified conditions that have been set.
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The DPM provides the user with a flexible Alarm system that monitors the Fluid
Temperature for conditions that fall outside configurable limits and provides
visual feedback for the user via the OLED, status LED or an SSR output. The
Temperature Alarm has several attributes which may be configured by the user
via the OLED/joystick interface or digital communication interface. These
attributes control the conditions which cause the Alarm to occur and specify
actions to be taken when the temperature reading rate is outside the specified
conditions.
Temperature Alarm conditions become true when the current temperature
reading is equal to, or higher or lower than, corresponding values of High and
Low Temperature Alarm levels.
Alarm action can be assigned with preset Delay Interval (0-3600 seconds) to
activate the SSR output. The Latch Mode control feature allows SSR output to
be latched on or follow the corresponding Alarm status.
Following settings are available for Temperature Alarm (see Figure 13 ):
a) Temperature Alarm Mode (Tabular entry)
ThisfunctiondetermineswhethertheTemperatureAlarmisEnabledorDisabled.
Two selectionsareavailable:EnabledorDisabled.ThedefaultentryisDisabled.
Alarm Mode selections can be set with the Joystick
UP and DN buttons and are
accepted by pressing the joystick equivalent of an ENT button.
b) Low Temperature Alarm (Numerical entry)
The limit for the Low Temperature Alarm value can be entered in currently
selected temperature units, in increments of 0.1 degree within the range of
-20 °C to 69.9 °C.
If a Low Alarm occurs, and SSR output is assigned to the Low Temperature
Alarm event (see Section 6.4.13.5), the SSR output will be activated when
the temperature is lower than the preset Low Temperature Alarm value.