Atest Gaz PW-033-B, User Manual

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Situation Description Indicators Display 11 / buzzer
„Inhibit” mode The detector is temporarily excluded from
the system. Flags related to that detector
are ignored by the controller.
All indicators blink twice at the same time
with the interval of 30 s (
_∏_∏_____
).
On display - „Inhibit”.
K12 Pump-H2
„Inhibit” mode
„STOP” mode Operation of the system is halted by an
operator. All indicators blink periodically
– once per two seconds 2 s (
_∏_______
).
On display – STOP.
K12 Pump-H2
STOP
Table 14: Indication of the detector statuses – special statuses
3.4.4
Response to gas concentration
Normal operation of a gas detector is confirmed by continuous activation of the green indicator. After
a hazardous gas appears within vicinity of the detector and its concentration exceeds the first or second
warning threshold or the alarm threshold, corresponding LED indicators on the front panel in the area of
the detector status (see Section: 3.1.3), i.e. LEDs denominated as 1, 2 or alarm go on. At the same time the
internal buzzer is activated, however it can be muted for a specific time by means of a keypad pushbutton
(see Section 3.1.5).
When gas concentration exceeds the maximum range permissible for the detector (overload threshold), the
following actions take place:
for detectors with catalytic sensors – the detector is locked (its sensor is deactivated and the
detector latches the most recent measurement result). The corresponding LED in the area for
status indication goes on (see Section 3.4.2). To restore normal operation of the detector an
operator has to navigate to the ‘Detector unlock’ option of the controller menu (see Section 3.7.3)
or unlock the detector by means of a command issued from another control device connected to
the system.
For detectors with other sensors – the corresponding LED in the area related to the detectors
status and depicted as , goes on. The detector keeps working and continues measurements of
gas concentration, which is confirmed by the MEAS. indicator that is still on.
Signalling depending on the concentration of gas measured by the detector:
11 Display with an example content.
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User Manual: POD-003-ENG R04
FAILURE
ALARM
2
1
MEAS.
FAILURE
ALARM
2
1
MEAS.