Lake Shore Model 331 Temperature Controller User’s Manual
Alarms (Continued)
Select for Alm A °®
Alarm On
Use the
s
or
t
key to toggle between Alarm On or Off. Press the
Enter
key.
Select for Alm A °®
Source Temp K
Use the
s
or
t
key to cycle through the following data sources: Temp C, Temp K, Linear, or Sensor,
where Temp C = degrees Celsius, Temp K = kelvin, Linear = MX+B or M(X+B) (refer to Paragraph
4.14.2), or Sensor = volts (V), millivolts (mV) or ohms (
Ω
). Press the
Enter
key.
Enter for Alarm A
Alarm Low 50½
The Low Alarm Point is entered using the numeric keypad, which includes the numbers 0
–
9, +/–, and
decimal point. For this example, enter 50 K. Press the
Enter
key.
Enter for Alarm A
Alarm High 100½
The High Alarm Point is entered using the numeric keypad, which includes the numbers 0
–
9, +/–,
and decimal point. For this example, enter 100 K. Press the
Enter
key.
Select for Alm A °®
Alarm Latching Off
Use the
s
or
t
key to toggle between Latching On or Off. For this example, select Alarm Latching
Off. Press the
Enter
key.
Enter for Alarm A
Dead Band 5½
The dead band is entered using the numeric keypad, which includes the numbers 0
–
9, +/–, and
decimal point. Press the
Enter
key. The audible parameter determines whether the internal beeper
will sound when an alarm is active. This is a global parameter so it is set once for all alarms.
After specifying either Alarm Setpoint On or Dead Band, next is the Alarm Audible screen.
Select With °®
Alarm Audible On
Use the
s
or
t
key to toggle between Audible Alarm On or Off. For this example, select Audible
Alarm On. Press the
Enter
key.
4-30
Operation
