For Your Safety; Intended Use; Conditions For Safe Use - Dräger Polytron SE Ex PR M1 DD Gebrauchsanweisung

For Your Safety

Strictly follow the Instructions for Use
Any use of the transmitter requires full understanding
and strict observation of these instructions.
The sensing head is only to be used for purposes spec-
ified here.
Maintenance
Inspection and service only by trained personnel.
We recommend that a service contract be obtained with
DrägerService and that all repairs also be carried out by
them.
Only authentic Dräger spare parts may be used for
maintenance. Observe chapter „Maintenance intervals".
Use in areas subject to explosion hazards
Equipment or components which are used in potentially
explosive atmospheres and have been tested and ap-
proved according to international or European regula-
tions may be used only under the conditions specified
here.
Modifications of components or the use of faulty or in-
complete parts are not permitted.
In case of repairs of equipment or components the na-
tional regulations must be observed.
Safety symbols used in these Instructions for Use
These Instructions for Use contain a number of
warnings for risks and hazards which might occur when
using the instrument. These warnings contain signal
words which will alert you to the degree of hazard you
may encounter. These signal words and corresponding
hazards are as follows:
Indicates a potential hazardous situation which, if not
avoided, could result in death or serious injury.
Indicates a potential hazardous situation which, if not
avoided, could result in injury or damage to property.
It may also be used to alert against unsafe practices.
NOTICE
Additional information on how to use the device.
26
WARNING
CAUTION

Intended Use

Conditions for Safe Use

The sensing heads Polytron SE Ex PR M1/2/3 DD and
SE Ex PR NPT1 DD as well as SE Ex HT M DD and
SE Ex LC M1/2/3 DD and SE Ex LC NPT1 DD are in-
tended to be used for fixed installed, continuous moni-
toring for combustible gas/air or vapour/air mixtures
below the Lower Explosion Limit (LEL) or below 10% of
the LEL resp. under atmospheric conditions.
The sensing heads are marked by the device
categories II 2G and II 2D and thus can be operated in
hazardous areas with potentially explosive atmos-
pheres of zones 1 and 2 and also zones 21 and 22.
The sensing heads Polytron SE Ex PR M1/2/3 DD and
SE Ex LC M1/2/3 DD are designed for gas explosion
protection acc. to device category 2 (to be used in zones
1 or 2) in the type of protection flameproof enclosure "d"
and increased safety "e".
For dust explosion protection according to equipment
category 2 (use in zones 21 or 22), the type of protection
is protection based on casing "t".
According to the European directive 94/9/EC the sens-
ing head Polytron SE Ex HT M DD is an assembly con-
sisting of three components (DrägerSensor HT M DD,
enclosure and cable gland), where all these three com-
ponents are type approved according to 94/9/EC and
marked by the device category II 2GD. Thus this sens-
ing head is suitable to be operated in hazardous areas
with potentially explosive atmospheres of zone 1 and
zone 2 as well as zone 21 and 22.
Sensing head SE Ex PR M1/2/3 DD for a measuring
range of 0 to 100 %LEL
The sensing head Polytron SE Ex PR M1/2/3 DD com-
prises a gas sensor of type DrägerSensor PR M DD
(type of protection: flameproof enclosure "d" or type of
protection: protection based on casing "t", approved as
XDS 021x).
Sensing head SE Ex PR NPT1 DD for a measuring
range of 0 to 100 %LEL
The sensing head Polytron SE Ex PR NPT1 DD com-
prises a gas sensor of type DrägerSensor PR NPT DD
(type of protection: flameproof enclosure "d" or type of
protection: protection based on casing "t").
Sensing head SE Ex LC M1/2/3 DD for a measuring
range of 0 to 10 %LEL
The sensing head Polytron SE Ex LC M1/2/3 DD com-
prises a gas sensor of type DrägerSensor LC M (type of
protection: flameproof enclosure "d" or type of protec-
tion: protection based on casing "t").