Ziton ZP3, Установка, эксплуатация и обслуживание

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ZP3 Fire Control Panel
Maintenance
ZP3 Fire Control Panel Manual
Page 1 - 20 UD1160.M Iss 6 (25/02/2005)
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1.4.4 Reference (low)
The low reference reading is used to determine that the line on which the device is
connected is healthy and is not subject to residual or unwanted signals. For effective
operation of the line this value must be below 10. A reading of zero is quite usual.
If the low reference reading ever rises above 38 then the panel will treat the device
generating the reading as invalid.
1.4.5 Device status reading
The device status reading is sometimes also referred to simply as the analogue reading. It is
a precise indicator of how strongly the device is sensing the environmental factors (e.g. heat
or smoke) it is designed to detect. For some devices the analogue reading may indicate
some other measure such as the status of a switch.
The panel will interpret the reading according to the device type. The panel uses
sophisticated algorithms based on these readings and their change over time to determine
the true conditions in the area covered by the device. Viewing a snapshot of the analogue
readings cannot provide information with the same degree of accuracy, nevertheless values
can be interpreted, as in the following tables, in order to help assess the status of a device.