Intended Use; Hints For Safe Use - Dräger PEX 3000 XTR 0000 Notice D'utilisation

Intended Use

The transmitter PEX 3000 is intended to be used for fixed installed continuous moni-
toring for mixtures of flammable gases and vapours with air under atmospheric con-
ditions. The full scale range is 100 % or 10 % of the lower explosive limit (LEL). The
transmitter is connected to a suitable controller unit by means of a 3-core-cable, the
measurement signal during normal operation is between 3.8 and 20.5 mA.
The Transmitter PEX 3000 type XTR 0090 and XTR 0091 (Remote-Version) is inten-
ded to be used in combination with a remote Dräger sensing head, e.g. Polytron
SE Ex PR M (100 % LEL) or Polytron SE Ex LC M (10 % LEL).
As the operation of the PEX 3000 in combination with the mentioned remote sen-
sing heads does not really differ from the operation of the PEX 3000 with built-in
sensors, they are not explicitly considered in these instructions for use. Likewise also
the operation of further housing types, e.g. of the types XTR 0001 and XTR 0011
(drilling templates see page 29) is not explicitly described.
The transmitters must not be used at ambient temperatures lower than –40
For the transmitters PEX 3000 type XTR 0000, XTR 0001, XTR 0010, and XTR 0011
the maximum ambient temperature is depending on the temperature classes and is
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40 C for temperature class T6, 55
perature class T4.
For the transmitters PEX 3000 type XTR 0090 and XTR 0091 the permissible maxi-
mum ambient temperature is 65
The transmitter is approved acc. to the device categories II 2G and II 2D and can
be operated in hazardous areas zone 1 and zone 2 as well as zone 21 and zone 22.
Observe installation instructions.
Not to be used in oxygen enriched atmospheres.
In conjunction with a suitable controller unit with pre-adjusted alarm thresholds
acoustic and visible alarm devices or automatic countermeasures can be activated
before the detected gases or vapours can form dangerous flammable mixtures with
air.

Hints for safe use

Only certified sensors or sensing heads are allowed to be connected to the termi-
nals br/br, ge/yw, and sw/bk.
In potentially gas-explosive areas (zones 1 and 2) the energised transmitter is
only allowed to be opened for maintenance purposes.
In potentially dust-explosive areas (zones 21 and 22) there is no explosion pro-
tection if the energised transmitter is opened. The Ex area has to be temporary de-
classified if necessary!
Before closing the transmitter make sure the atmosphere is free of dust.
9023810 - 2nd edition - September 2005
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C for temperature class T5, and 65
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C generally.
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C.
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C for tem-
Intended Use
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