Endress+Hauser Oxymax COS22 Kurzanleitung Seite 21

Oxymax COS22/22D
• If the CYK10-G cable is installed with its terminal head in Ex zone 0, the cable must be
protected against electrostatic charge.
• The user may not change the configuration. Only in this way will the explosion protection of
the unit remain intact. Every change puts safety at risk.
• The sensors must not be operated under electrostatically critical process conditions. Avoid
strong steam or dust currents that act directly on the connection system. The metal sensor
shaft must be installed at the mounting location in such a way that it is electrostatically
conductive (< 1 MΩ).
• To mount, use and maintain the product, you must follow the information in the Operating
Instructions and the following standards:
– GB50257 -1996 "Code for construction and acceptance of electric device for explosion
atmospheres and fire hazard electrical equipment installation engineering"
– GB3836.13-1997 "Electrical apparatus for explosive gas atmospheres Part 13: Repair and
overhaul for apparatus used in explosive gas atmospheres"
– GB3836.15-2000 "Electrical apparatus for explosive gas atmospheres- Part 15: Electrical
installations in hazardous area (other than mines)"
– GB3836.16-2006 "Electrical apparatus for explosive gas atmospheres- Part 16: Inspection
and maintenance of electrical installation (other than mines)"
• Hazardous area versions of digital sensors with Memosens technology are marked by a red-
orange ring on the plug-in head.
• The maximum permitted cable length between the sensor and transmitter is 100 m
(330 ft).
FM/CSA IS/NI Cl.1 Div.1 GP: A-D
Observe the documentation and the control drawings of the transmitter.
Temperature classes ATEX, IECEx, FM/CSA and NEPSI
Ambient temperature T
Reference temperature T
TIIS Ex ib IIC T4
The certified oxygen sensor Oxymax COS22D-TA****3 may only be connected to the
certified, intrinsically safe, digital sensor circuit of the transmitter Liquiline M CM42-OT* in
conjunction with the measuring cable CYK10-U*1.
Temperature classes TIIS
Ambient temperature T
Reference temperature T
T3
–5 to +135 °C
a
ref
T4
–5 to +60 °C
a
+25 °C
ref
Basic safety instructions
Temperature class
T4
–5 to +120 °C
+25 °C
T6
–5 to +70 °C
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