Dräger Polytron 7000, Инструкция по эксплуатации

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_ Dräger Polytron 7000
Conventions in this document
– The electric network (gas detector and alarm devices) in which the gas detector
is installed must be equipped with a circuit breaker or a fuse.
– The circuit breaker or fuse must be easily accessible and must be marked as
belonging to the gas detector.
– Observe the operational temperature range of the cables. Electric strength of
the cable insulation corresponding to the supply for the alarm devices that are
connected to the relays.
– If the gas detector is not connected to a controller, an alarm signalling device
must be connected to the fault relay.
1.4 Detection and measurement of oxygen in line with EN
50104
– P3U is certified with the EU type examination certificate BVS 03 ATEX E 406 X
and the type examination certificate PFG 16 G 005 X for the measurement of
oxygen.
– The certified measuring function concerns the measuring range 0 to 25 % O
2
(v/v) for the purpose of measuring inertisation (BVS 03 ATEX E 406 X) plus the
monitoring of the ambient air for oxygen deficiency and surplus
(PFG 16 G 005 X).
– Only configure alarms as “non-acknowledgeable”.
– Only use the readouts on the 4-20 mA analogue output or the switching states of
the relays for purposes relating to safety.
– Approved sensors and components:
– DrägerSensor O
2
LS (6809630)
– DrägerSensor O
2
(6809720)
– Remote sensor (8317275)
– Relay module (8317360)
2 Conventions in this document
2.1 Meaning of the warning notes
The following alert icons are used in this document to provide and highlight areas of
the associated text that require a greater awareness by the user. A definition of the
meaning of each icon is as follows:
Alert icon Signal word Consequences in case of nonob-
servance
WARNING Indicates a potentially hazardous situation
which, if not avoided, could result in death
or serious injury.
CAUTION Indicates a potentially hazardous situation
which, if not avoided, could result in injury.
It may also be used to alert against unsafe
practices.