Setting Temperature Alarm Limits; Figure 11 Temperature Alarm Limits And Hysteresis - M&C PSS Series Instruction Manual

13.1

Setting Temperature Alarm Limits

You use the temperature alarm limits to determine when the alarm is triggered. HIGH dT and LOW dT
are independently adjustable from dT = 2 to 8 °C [dT = 3.6 to 14.4 °F]. In the following figure, the
upper temperature alarm limit is set at 8 °C [46.4 °F] and the lower one at 3 °C [37.4 °F].
The hysteresis is set to "1".
T
Cooler
alarm
8 °C
no alarm
5 °C
no alarm
alarm
3 °C
Figure 11 Temperature alarm limits and hysteresis
To set the temperature limits:
1. Enter the PIN (see chapter "12.2 PIN Entry").
2. Tap and hold the
3. The display shows the code entry.
The code for setting LOW dT is "013". If you enter this code, you can change the lower temperature
alarm limit.
The hysteresis setting can be changed via code "014". The hysteresis ensures that no "fluttering"
occurs in the event of a temperature alarm. The differential value dT = 1 or 2 °C [1.8 or 3.6 °F] can be
entered.
N O T E
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hysteresis = 1
HIGH dT = 3 °C
LOW dT = 2 °C
hysteresis = 1
-key for a short moment.
The code for setting HIGH dT of the channel is "012". Confirm the
code with the
After confirming the code, the default value "3" appears. The value is
blinking and you can enter values from dT = 2 to 8 °C [dT = 3.6 to
14.4 °F] with the
Press to confirm your change or
without making any changes. After changing or aborting the display
shows the cooler temperature again.
If HIGH dT or LOW dT is reduced to "2", the hysteresis is
automatically reduced to the differential value dT = 1 °C [1.8 °F].
upper temperature alarm limit
set value
lower temperature alarm limit
t
-key, then the display of the pre-set value appears.
and -keys.
PSS-5C | 1.02.02
to leave the code range
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