MZ-RD – Multi-Zone Remote Display
Instruction 3015-5157 27
longer be blinking, indicating that the alarm has been acknowledged. Repeat this procedure to
acknowledge any remaining alarms.
Alarm Summary Screen (Acknowledge Mode)
When all the alarms associated with a given gas monitor are acknowledged, its RED LED will turn
off and any external alarms connected to the gas monitor relays will de-activate. All pending
alarms across the entire network must be acknowledged before the MZ-RD returns to normal
operation. When that occurs, its RED LED will turn off and any associated external alarms
connected to the MZ-RD relays
will de-activate.
The system will continue to generate new alarms if ppm values above the alarm thresholds are
detected.
4.7. The Trend Screen
4.7.1. Overview - Log Interval
The gas monitor retains a data log of 100 measurements for each zone. The log interval is the
number of minutes from 1 to 1440 between each log point. This parameter can be changed from
Zone Setup Screen #1.
The default setting for this parameter is 1440 minutes (24 hours). If the log interval time is set to
0, then a measurement is recorded in the trend log after every measurement cycle. Therefore,
after the trend log is filled it will contain the last 100 measurement points for a zone. If you want
the data logged less frequently you should increase this value. It is important to remember that
cy
cle time is dependent on many factors, including the number of zones being monitored, input
line length, and the run zeroing mode selected. Before changing this value it may be useful to first
review the log data using the Trend Screen to determine the nominal cycle time.
4.7.2. Navigating to the Trend Screen
Access the Trend Screen from the Zone Screen as follows:
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