P29 Instruction Manual
16
8.3 Warning
Use this menu item to set the warning values. The first menu item that appears here is Select
Warning Message (1 or 2). The settings for this warning message should then be changed.
Use the “^” and “>” keys to select the number of the warning and press Enter to move to that
warning's menu.
The following sub-menu items are available:
•
Value
•
Hysteresis
•
TV
•
Warning
signal
•
Mode
8.3.1 Value
This item adjusts the pressure value at which the particular warning should be activated. The
pressure range defined by the scale can be used as the setting range. Select the pressure
unit set for the display as the unit. If the volumetric flow, mass flow or flow rate (root-
extracted display) is displayed, select the Pa unit.
8.3.2 Hysteresis
This item can be used to select the hysteresis for the particular warning. The action
described in 7.3.1 applies to the entry unit. The hysteresis is always positive.
8.3.3 TV delay time
The entry value of the warning is derived from the unfiltered pressure value. With this
parameter, you can now specify how long the pressure value can be exceeded or not met
until the warning is activated. The adjustment is done in ms. 25 ms is specified as the
minimum value.
8.3.4 Warning signal
A warning signal sounds once every second when a threshold value is exceeded. With this
parameter, you can set the duration of this warning signal for each warning. The maximum
value here is 1000 ms (continuous tone). If both warnings are active, the longer warning
signal of the two sounds. The warning signal may sound different depending on the
activation level. A warning signal duration of 0 ms switches the signal off.
8.3.5 Mode
This item can be used to adjust whether the warning is to be activated when the pressure
exceeds or falls below the warning pressure threshold. This affects the processing of the
hysteresis value.