Marking; Signal Transmission To Central Controller; Analog Signal; Power Supply And Relays - Dräger Polytron 8100 Notice D'utilisation

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NOTICE
i
i
The table shows the response of the sensor to other
gases than the target gas (cross sensitivities). The
listed values are typical and are valid for new sensors.
The table does not claim to be complete. Gas mixtures
can be displayed as the sum of all components.
Gases with a negative cross sensitivity can cancel out
a positive sensor signal. The influence of the O
displacement is not taken into account (partial
pressure measurement).
Example:
2 Vol% ethylene in the air - cross sensitivity (table
value) = -1 Vol% O
O
displacement caused by 2 Vol% ethylene (2% of 20
2
Vol% O
) = -0.4 Vol% O
2
Instrument display (20.9 - 1 - 0.4) = 19.5 Vol% O
CAUTION
!
The exposure to higher concentrations of unsaturated
hydrocarbons, alcohols or hydrogen over an extended
period of time (dose approx. 100,000 ppm x hours)
could cause the sensor to fail.
Dräger Polytron 8100
.
2
2

10.2 Marking

The marking is reproduced on a separate piece of paper
shipped with the instrument.
Serial Number key: The third letter of the serial number
specifies the manufacturing year: A = 2009, B = 2010,
C = 2011, D = 2012, E = 2013, F = 2014, H = 2015, J = 2016,
2
K = 2017, etc.
Example: Serial Number ARCB-0103: the third letter is C,
which means that the unit was manufactured in 2011.

10.3 Signal transmission to central controller

.
2
NOTICE
i
i
Frequency of measurement calculation: 1 x per
second (update of display, analog interface and
relays).

10.3.1 Analog signal

Description
Normal operation
Drift below zero
Measuring range exceeded
Instrument fault
Fault on analog interface
Maintenance signal

10.4 Power supply and relays

Operating voltage
Cable specification
Inrush current
Operating current
(max.)
Relay rating (option) SPDT, 0.1 A - 5 A at 230 V~,
Technical data
Analog output
4 to 20 mA
3.8 to 4 mA
20 to 20.5 mA
≤ 1.2 mA
> 21 mA
3.4 mA steady signal or 1 Hz
modulation between 3 and
5 mA (selectable)
10 to 30 V
at the instrument
3-core shielded cable
2.3 A for 2 ms at 24 V
10 Ω resistor
80 mA at 24 V
, without relay,
non-remote sensor
100 mA at 24 V
, with relay,
remote sensor
0.1 A (minimum) - 5 A at 30 V
resistive load.
For safety-related applications (SIL 2),
the maximum contact rating is reduced
(see Dräger Polytron 8x00 Safety
Manual).
,
,
43

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