Dräger Polytron 8000 Series Technical Manual

30 Technical Manual | Dräger Polytron
®
8000 Series
Remote sensors
6 Remote sensors
Remote versions with explosion protection "explosion proof (Ex d)"
The cable length shall be  30 m.
Polytron
®
8100 EC
Polytron
®
8100 EC is shipped without EC sensor. For remote installations a remote
cable is inserted in the EC sensor enclosure of the transmitter. The other end of the
cable is then connected to the EC remote sensor enclosure away from the
transmitter. The sensor is then installed in the this remote sensor enclosure.
Duct mounting requires additional connection kits.
Observe control drawing included in annex.
Polytron
®
8200 CAT, Polytron
®
8310 IR, Polytron
®
87x0 IR
Instruments are shipped with installed CAT and IR sensors. For remote installations
the sensor must be removed. The sensor is then installed in the Junction Box Ex d
away from the transmitter.
The Junction Box Ex d is an explosion-proof sensor enclosure that makes it
possible to install the sensor separately from the transmitter. The housing consists
of robust stainless steel or aluminum and is suitable for indoor or outdoor
applications.
The Junction Box Ex d is suitable for wall, ceiling and duct mounting.
Duct mounting requires additional connection kits.
6.1 Cable lengths Polytron
®
8200 CAT
6.1.1 Cable lengths of catalytic remote sensors
The connection between transmitter and remote sensor represents a Wheatstone
bridge. One leg of the bridge circuit is enclosed in the sensor enclosure, the other
leg is included in the transmitter.
The maximum cable length between remote sensor and transmitter depends on
different factors. The following factors are key factors to determine the cable length
for a certain application.
– The specifications of the sensor used
– The cable cross-section
– The ambient temperature
– The type of cable
The given cable lengths include a 10% safety margin and are valid for 20 °C (68 °F)
and 50 °C (122 °F). Further values are available upon request.
Transmitter Sensing head IFU part numbers
Polytron
®
8100 EC
EC sensing head remote (9033247)
Polytron
®
8200 CAT
Polytron
®
8310 IR
Polytron
®
87x0 IR
Junction Box stainless steel or alumi-
num (4544286)

Dräger Polytron 8000 Series Specifications

General

Ingress Protection	IP66/67
Detection Principle	Electrochemical, Infrared, Catalytic Bead
Gases Detected	Combustible gases, toxic gases, and oxygen
Display	LCD with backlight
Humidity Range	0 to 99% RH (non-condensing)
Housing Material	Stainless steel
Output Signal	4-20 mA, HART, RS-485 Modbus
Power Supply	10 to 30 V DC
Certifications	ATEX, IECEx, CSA
Temperature Range	-40 °C to +65 °C (depending on sensor)