Atest Gaz PW-033-B, User Manual

Page: 21 / 52

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For the home screen the Control Unit Module periodically displays information for all channels, where
channels are switched over every three seconds. Alternatively, an operator can scroll scanning of channels
manually by depressing the right or left arrow buttons on the keypad (see Section 3.1.5), Upon each
depressing the Control Unit Module holds content for the specific channel for 15 seconds and then moves
to the subsequent channel.
The detector status area on the front panel (see Section 3.1), shows status for the detector that is assigned
to the channel that is currently displayed. Refer to Sections 3.4.2 and 3.4.3 for specification of specific
signals to be shown on the display).
3.4.1 General code of indications
Status of a detector is indicated according to the following rules:
green continuous light – means, in general, that the detectors works properly, i.e. measures
concentration of gases,
red light – means that a hazardous concentration of gas is detected,
yellow – any failures or defects within the system,
other colours or flashing light that are different from the foregoing indications are considered as
any special status of the system.
3.4.2 Detector’s state signalling – gas alarms
Situation Description Indicators Display 6 / buzzer
No danger The detector works properly and
continuously measures gas concentration,
which is confirmed by continuous light of
MEAS. indicator
K12 Pump-H2
0.5 %LEL _____
Warning 1 The gas concentration exceeds the first
warning threshold.
Indicator 1 on the front panel is
continuously on and the internal buzzer is
activated (can be muted by means of the
keypad).
K12 Pump-H2
11.2 %LEL _____
Warning 2 The gas concentration exceeds the second
warning threshold.
Indicators 1 and 2 on the front panel are
continuously on and the internal buzzer is
activated (can be muted by means of the
keypad).
K12 Pump-H2
17.9 %LEL ____▄
6 Description of the display content refers to example settings with the assumption that the warning level 1 corresponds to 10% of LEL, warning
level 2 – 15% of LEL and alarm level – 20% of LEL.
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User Manual: POD-003-ENG R04
ALARM
2
1
MEAS.
FAILURE
ALARM
2
1
MEAS.
FAILURE
ALARM
2
1
MEAS.
FAILURE