Phonetics 1108 - Manual (Page 92)

Sensaphone ® Model 1108 User’s Manual
80
• Model 1108 detects a change in the
monitored condition (from the sensor
wired to one of the inputs). This is
considered an alert condition, and does
not qualify as a valid alarm at this point.
• The condition continues throughout the
programmed Recognition Time. If the
condition (or sensor) reverts to its
normal state before the Recognition
Time is reached, no alarm will occur.
• The condition must persist long enough
to meet or exceed the programmed
Recognition Time. When Recognition
Time has expired, but the alert condition
continues, the Model 1108 will
determine that a valid alarm exists.
• When a valid alarm is determined, Call
Delay is activated, forcing the
Model 1108 to wait for a programmed
period of time before starting the dial-
out process. Call Delay applies to the
period just prior to dial-out, before the
first telephone call is made.
• Call Delay provides the opportunity to
cancel a valid alarm at the Model 1108’s
installation site, before dial-out occurs.
An audible voice message indicates
which of the inputs is in alarm. If on-site
personnel acknowledge the alarm within
the Call Delay time, the
Model 1108 will not dial out. (Local
Voice Mute is disabled, so that alarm
messages can be heard at the site.)
I. Model 1108 Detects a Change at the Sensor
Variable Factors II. A Valid Alarm Is Recognized
Variable Factors
Call Delay:
Activated
Valid Alarm:
Exists
Recognition Time:
Expired
Local Voice Mute:
Disabled
Alarm Message:
Audible, On-site
Activated
Recognition Time:
Activated
Input Type: (1) An
open circuit closes,
(2) a closed circuit
opens, or
(3) temperature
limits are exceeded.