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8024250/18HT/V2-0/2020-12| SICK
O P E R A T I N G I N S T R U C T I O N S | ZIRKOR200 Ex-G
Subject to change without notice
LAYOUT AND FUNCTION
4
Analyzer unit Z200EXG-y2********************* (y= 1, 2)
Fig. 7:
Analyzer unit
The “Ex-d” terminal compartment of the analyzer unit is equipped with a 1‘‘ NPT thread for
connection to a certified “Conduit” system or for fitting an Ex-d cable inlet according to
IEC60079-1. Cable inlets of simple design must not be used. Observe Sections 13.1 and
13.2 of IEC60079-1. When connecting to a “conduit” system, the associated sealing device
must be located directly on the “Ex-d
”
terminal compartment.
The cover of the “Ex-d” terminal compartment must be screwed in to the stop before
commissioning. It must be secured by screwing in the cover locking screw until it stops.
Cable inlets
A variety of certified “Ex-d” cable inlets are delivered from the factory. Depending on the
type ordered, they are suitable as inlets for armored or unarmored cable types. Observe the
delivered document on the relevant cable inlet.
Tightly screw the “Ex-d” cable inlets into the enclosure. The delivered cable inlets are
suitable for the enclosure temperature range stated in the ZIRKOR200 Ex-G certification.
If other cable inlets than those delivered are used, they must have an Ex-qualification
(ignition protection) and the IP classification and the temperature stability (COT) must be
adhered to, according to the application conditions.
The connection cables, cable inlets and screw plugs or pipe sealing devices must be
suitable for the lowest ambient temperature.
No. Component
Gap description
1
Breathing device - reference air outlet
Sintered metal
2
Locking screw, enclosure cover
-
3
Breathing device - test gas inlet
Sintered metal
4
Breathing device - reference air outlet
Sintered metal
5
Filter head on the measuring probe
Sintered metal
6
Measuring probe locking screw
-
7
Measuring probe with filter head
Thread gap M56x2
8
Enclosure - measuring probe
Taper thread, thread gap 1‘‘ NPT thread
9
Enclosure - screw fitting
1‘‘ NPT thread
10
Enclosure - cover
Thread gap M80x2
