Dwyer DL7 - Manual (Page 5)

B. Calling a pager: The pager system must accept touch-tone
codes that can be displayed on the pager.
1. Type the dial command ATDT in the Number to Dial
box.
2. After the dial command, type the number of the
pager that is to receive the alarm call.
3. After the pager number and before the identifying
code there must be a pause by typing commas. (For most
modems, each comma causes a pause of two seconds).
4. Type a code that will identify the logger. For exam-
ple: ATDT 555-2222,,,,,40167, would instruct the logger to dial
the pager number and pause for ten seconds, and then send the
serial number of the logger.
Setting Call Delay
Call delay is the length of time that a logger will wait before dial-
ing out once an alarm condition has occurred. If you do not
want the remote logger to dial out immediately when one or
more of the channels goes into alarm condition, you can set the
Call delay to designate the number of seconds the logger will
wait before dialing.
If the alarm condition does not exist for the entire delay period,
the logger will not dial out. If the logger comes out of an alarm
condition during the call delay period, the delay timer will stop
and will start again from zero at the next alarm event.
Setting Retry Delay
If a remote logger dials out an alarm but cannot get through (line
is busy), it will continue to dial out until connection is made.
Retry delay is the length of time the logger will wait between
unsuccessful attempts. It is recommended to set the retry dial to
5 minutes. The logger will continue to dial out after every retry
delay time and as long as the alarm condition exists and has not
been acknowledged.
Setting Reset Delay
Reset Delay begins when you acknowledge the alarm by backing
up the logger that has dialed out. Reset Delay deactivates Alarm
Dialout to give time to fix the problem that caused the alarm.
When Reset Delay period has elapsed, Alarm Dialout will reacti-
vate, and if an alarm condition exists, the logger will dial out
again.
IMPORTANT: If an alarm condition occurs and Reset Delay has
been initiated by the last backup, the logger will wait until the
Reset Delay period is over before dialing out. To bypass the
Reset Delay period (if you have fixed the alarm problem but time
remains on the Reset Delay), click the Clear Stored Data button
and follow the subsequent prompts.
Sending the Setup to the Logger
After choosing Alarm Dialout settings, setup logger by clicking
the Save Setup/Clear Stored Data button and follow the subse-
quent prompts.
Responding to Alarm Call
1. When the logger dials out to warn of alarm condition, dial into
the site and backup the logger.
2. Fix the problem that caused the alarm.
3. Reactivate Alarm Dialout by contacting the logger and clicking
Clear Stored Data.
NOTE: Test Alarm Dialout regularly to ensure proper operation.
Fast Read Mode Disabled
Alarm Dialout is not designed to operate in Fast Read Mode.
When Alarm Dialout is enabled, fast Read Mode is disabled;
when Fast Read Mode is enabled, Alarm Dialout is disabled.
PRECAUTIONS
The Series DL7 is designed for long-term trouble-free perfor-
mance. Keep in mind a few precautions to maximize perfor-
mance.
The pressure sensor is compatible with non-corrosive gases and
air. IT IS NOT TO BE USED FOR LIQUID PRESSURE MEA-
SUREMENT.
Always try to make your pressure connections separate from the
module and logger. To accomplish this, leave a short length of
tubing continually attached to the high and low ports.
Overstressing the input connections may cause it to break and
thus cause erroneous readings.
Use an uninterruptible power supply (UPS) to keep power run-
ning to modem and telephone equipment in case of outrage.
Regularly test the Alarm Dialout function to ensure proper opera-
tion.
Cold or Humid Environments
The environment the logger will be placed in must be suitable,
please refer to the physical data section. If conditions are not
acceptable, consider using a protective enclosure. For humid
environments, the logger can be protected by placing it in a
ziplock plastic bag.
If the logger is used in a cold environment, make sure condensa-
tion will not settle on the logger when it is brought back into a
warmer environment. The best way to prevent condensation is
to place the logger in a plastic ziplock bag and include a dessi-
cant. When you bring the logger back into the warmer climate,
leave the logger in the bag with the dessicant until the logger has
come to equilibrium with the environment.
Bulletin E-90-DL7 6/22/05 3:52 PM Page 5