Sensaphone 1800 - Manual (Page 46)

Sensaphone 1800 Manual
44
ALARM LIMITS
The Alarm Limits determine the level at which a temperature or
4–20mA Zone has reached the alarm threshold. The input value
must not exceed the Alarm Limit to trip an alarm. Each Zone has
a programmable Low and High Alarm Limit. The default settings
are Low Limit=0 and High Limit=100. The range of programming
for 2.8K thermistors is -109° to 115°F (-85° to 57°C). The range of
programming for 10K thermistors is -87° to 168°F (-66° to 76°C).
For zones configured as 4–20mA the range of programming is
-10,000 to 10,000. To make a value negative, precede the value
with the [RINGS/TAD/*] key.
NOTE: Only Zones configured as temperature or
4–20mA can have Alarm Limits programmed.
To program the Low Alarm Limit:
1. Press the SET key.
2. Press the LOW LIMIT key.
3. Press the corresponding Zone key (1–8), 1800 will say “Enter
number.”