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Dräger Polytron 5100
Sensor principle
7
Sensor principle
Dräger electrochemical sensors are measuring the partial
pressure of gases under atmospheric conditions. The
monitored ambient air diffuses through a membrane into the
liquid electrolyte in the sensor. The electrolyte contains a
measuring electrode, a counter-electrode and a reference
electrode. An electronic potentiostat circuit ensure a constant
electrical voltage between measuring electrode and reference
electrode. Voltage, electrolyte and electrode material are
selected to suit the gas being monitored so that it is
transformed electrochemically on the measuring electrode and
a current flows through the sensor. This current is proportional
to the gas concentration. At the same time, Oxygen from the
ambient air reacts at the counter-electrode electrochemically.
The current flowing through the sensor is amplified
electronically, digitized and corrected for several parameters
(e.g. the ambient temperature).
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Disposing of the instrument
Disposing of electrical and electronic equipment:
EC-wide regulations governing the disposal of
electrical and electronic appliances which have been
defined in the EC Directive 2002/96/EC and in national
laws have been effective since August 2005 and apply
to this device.
Common household appliances can be disposed of
using special collecting and recycling facilities.
However, this device has not been registered for
household usage. Therefore it must not be disposed of
through these channels. The device can be returned to
your national Dräger Sales Organization for disposal.
Please do not hesitate to contact Dräger if you have
any further questions on this issue.
Disposing of electrochemical sensors:
To be disposed in accordance with the material safety
data sheet of the corresponding sensor.
!
WARNING
Danger of explosions! Do not dispose sensors in fire,
risk of chemical burns!
Do not open with force.
Observe the applicable local waste disposal
regulations. For information, consult your local
environmental agency, local government offices or
appropriate waste disposal companies.
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