Vaisala Drycap DMT152, User Manual

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Syntax Description
Example:
amode 2 1
Ch1 output : 4 ... 20 mA
Ch2 output : 0 ... 20 mA
5.3.1 Limit Alarm
The limit alarm is activated when the measured parameter goes below the low limit or above
the high limit. The alarm can be specified during ordering for a specified parameter, or
configured on the serial line using the
ALARM command.
When ordering a limit alarm, the alarm levels are set as follows:
• For current output, an active alarm is indicated by the current being at the maximum of
the scale (20 mA).
• For voltage output, an active alarm is indicated by the voltage being at the maximum of
the selected scale. For example, if the voltage output scale is 0 … 5 V, an output of 5 V
indicates the alarm is active.
Using the ALARM command, you can also set a hysteresis value to prevent the repeated
triggering of the alarm when the measurement fluctuates around a limit value.
Table 13 ALARM command
Syntax Description
ALARM ?
<cr> View the current alarm settings.
ALARM
<cr> Select at the prompt (
?
) whether the alarm is
enabled or disabled and define the alarm limits.
DMT152 User Guide M210865EN-J
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