Atest Gaz PW-033-A, User Manual

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ALARM
2
1
MEAS.
FAILURE
ALARM
2
1
MEAS.
FAILURE
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Situation Description Indicators Buzzer
Non-critical
failure
Detector malfunction that may negatively impact its
measurement accuracy (e.g. exceeding of time until periodic
calibration
).
The detector still performs measurement.
FAILURE indicator flashes evenly. (
_∏_∏_∏_∏_
).
Critical failure The detector is damaged and does not perform measurement.
FAILURE indicator is lit continuously, the remaining ones are
turned of.
The internal buzzer is on.
Short-time
communication
failure
Communication with a gas detector is interrupted for a short
time. The previous status of the detector is still valid and the
MEAS. indicator is off.
No
communication A gas detector fails to respond for a long time. It is a special
case of a detector failure,
The FAILURE indicator is continuously on and all other ones are
off.
The internal buzzer is active.
„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 (
_∏_∏_____
).
„STOP” mode Operation of the system is halted by an operator. All indicators
blink periodically - once per two seconds 2 s (
_∏_______
).
The STOP indicator on the control panel is on.
Table 17: Indication of the detector statuses – special statuses
3.3.4 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, i.e. LEDs denominated as 1, 2 or alarm (see Section 3.1.3), go on. At the same time the
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User Manual: POD-002-ENG R03
ALARM
2
1
MEAS.
FAILURE
ALARM
2
1
MEAS.
FAILURE
FAILURE
ALARM
2
1
MEAS.
FAILURE
ALARM
2
1
MEAS.