Atest Gaz Alpa EcoDet XT, Руководство пользователя

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5 User interface
Detectors indicate its status (operation mode) by means of four LEDs that are available on the side wall of
the detector enclosure (See Figure 2 and 3).
Indicating LEDs belong to two areas:
DETECTOR (information about the detector
status.),
BUS (information about interconnections
of the detector).
Figure 3: User interface
Table 3 summarizes how modes of the detector operation are indicated by LEDs, whereas the detailed
specification of each status is provided in Section 1.2.
Status of LED indicators Meaning of indications
Green LED (OK) is permanently ON
D
ET
EC
TO
R
Regular operation of the detector, gas concentration is below
the established thresholds
Yellow LED ( ) is permanently ON Detector failure
Red LED (ALARM) blinks once per period The 1
st
warning threshold is exceeded
Red LED (ALARM) blinks twice per
period The 2 nd warning threshold is exceeded
Red LED (ALARM) is permanently on The alarm threshold is exceeded
Yellow LED ( X1) is permanently on
BU
S
Failure (break) of a communication bus, improper input current of the
detector – see also Section 8
Periodical flashing of all LEDs Warm up
Table 3: Indication of operation modes
6 Layouts of gas detection systems
Gas detectors can be mutually interconnected in two ways:
star layout (conventional architecture), or
serial bus layout (an open or closed chain of gas detectors connected to a common
communication bus).
Such system may comprise only the Alpa EcoDet XT detector or pairs made up of the Alpa EcoDet XT
detector combined with the Alpa EcoWent XT unit.
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User Manual: POD-043-ENG R03
Information about the
Detector status
Information about
interconnections of
the detectors