Endress+Hauser Oxymax COS22D, Руководство по эксплуатации

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Oxymax COS22D Wiring
Hauser
15
4 Wiring
WARNING
!
Device is energized
Improper connection can cause injury or death.
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The electrical connection must only be carried out by a certified electrician.
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Technical personnel must have read and understood the instructions in this manual and must
adhere to them.
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Prior to beginning any wiring work, make sure voltage is not applied to any of the cables.
4.1 Sensor design for hazardous area applications
4.1.1 Quick wiring guide
The inductive sensor-cable-plug-in system Memosens, consisting of
• oxygen sensor Oxymax COS22D-BA**** and
• measuring cable CYK10-G**1
is suitable for the use in explosion-hazardous areas acc. to the type-examination certificate
BVS 04 ATEX E 121 X . The corresponding EU declaration of conformity is part of this document.
• The certified oxygen sensor Oxymax H COS21D-*12*1COS22D-BA**** in combination with the
measuring cable CYK10-G**1 may only be connected to certified, intrinsically-safe, digital sensor
circuits of the transmitter Liquiline M CM42-*G*********. The electrical connection must be
carried out in compliance with the wiring diagram.
• Oxygen sensors for use in Ex areas have a special, conductive O-ring. The metallic sensor shaft is
electrically connected to the conductive mounting location (e.g. a metallic assembly) by means of the
O-ring.
• You must take appropriate measures to connect the assembly or the mounting location to the
operational ground in accordance with Ex guidelines.
• The sensors must not be used under electrostatical critical process conditions. Strong vapour or dust
streams acting directly on the plug-in system are to be avoided.
• Ex versions of digital sensors with Memosens technology are marked with an orange-red ring on the
plug-in head.
• The maximum permissable cable length is 100 m (330 ft).