Description; Product Overview; Intended Use; Intended Operating Area And Conditions - Dräger Polytron 8100 Notice D'utilisation

Description

2 Description
2.1

Product overview

Refer to figure A on the fold-out page.
1 Enclosure lid
2 Set screw (2 mm Allen screw)
3 Handle
4 PCB unit (and optional relay)
5 Enclosure bottom
6 Sensor
7 Feed-through cable
8 Docking station
9 Explosion proof instrument
10 Explosion proof instrument with increased safety wiring
compartment (Docking Station)
2.2

Intended use

The Dräger Polytron 8100 is an explosion proof instrument for
continuous monitoring of toxic gases or oxygen in the ambient
air. The instrument is housed in a rugged stainless steel or
aluminum enclosure for indoor and outdoor applications. The
instrument can be connected through a sealed conduit or
approved cable gland to a Dräger monitoring system or a
Programmable Logic Controller (PLC). With the optional alarm
relay configuration, the instrument can be operated as a stand-
alone unit. The instrument is designed to be installed in
permanent locations and is approved for use in hazardous,
classified areas, see Section 10.1 on Page 38. With the
optionally integrated relay module, the instrument can be
operated without a central controller (with additional local
alarm signaling).
For a safe operation in accordance with BVS 13 ATEX G001 X,
the connection to a central controller is necessary. This also
applies if all relays are connected because the fault relay is not
activated during maintenance. In any case, the analog output
must be monitored because it might indicate a special status
by a current between 0 and 3.5 mA. Additionally Dräger
Polytron 8100 is available with fieldbus interfaces. Using the
fieldbus interface no relays are available. The fieldbus
interface is not in accordance with the BVS 13 ATEX G 001 X.
2.3

Intended operating area and conditions

Hazardous areas classified by zones:
The device is intended to be used only in hazardous areas
classified Zone 1 or Zone 2, within a temperature range as
marked on the device, where gases of explosion Groups IIA,
IIB or IIC and temperature class T4 or T6 (depending on the
maximum ambient temperature) or dusts of Groups IIIA, IIIB or
IIIC may be present.
Hazardous areas classified by divisions:
The device is intended to be used only in hazardous areas
Class I or II, Div. 1 or Div. 2, within a temperature range as
marked on the device, where gases or dusts of Groups A, B,
C, D or E, F, G and temperature class T4 or T6 (depending on
the maximum ambient temperature) may be present.
8
2.4

Design

The instrument is powered by 10 to 30 VDC (see Section 10.4
on Page 43). Gas concentrations, status messages, and menu
choices are displayed on a backlit graphic LC-display and 3
colored LEDs. The measured gas concentration is converted
to a 4 to 20 mA analog (per NAMUR recommendation NE43)
or a digital HART output signal. The instrument can be
operated as current source or sink. Optionally the instrument
can be equipped with a fieldbus interface allowing the
integration in an asset management system. Using the
fieldbus interface no relays are available. The fieldbus
interface is not in accordance with the BVS 13 ATEX G 001 X
NOTICE
i i
For further information regarding the usage of the
fieldbus interface (Modbus RTU, Profibus PA or
Foundation Fieldbus H1) consult:
- Technical Modbus Handbook,
- Technical Profibus Handbook or
- Technical Fieldbus Handbook
Navigation through the menu is done by taping a magnetic
wand on the glass at the appropriate indicator.
The instrument can be configured, calibrated and maintained
non-intrusively without declassifying the area.
Dräger Polytron 8100