KROHNE UFM 500 ATEX EN - Manual (Page 2)

1
WARNING !
No changes may be made to the devices. Unauthorized changes
might affect the explosion safety of the devices.
These additional instructions are an extension to the standard Installation and
Operating Instructions and only applies for the EEx version of the UFM 500 K
compact ultrasonic flowmeter. All technical information described in the
standard Installation and Operating Instructions are applicable, when not
specifically excluded or replaced by the instructions in these additional
instructions.
CONTENTS
1. SYSTEM COMPONENTS .................................................................................................2
1.1 G ENERAL INFORMATION .................................................................................................... 2
1.2 UFS 500-EE X PRIMARY HEAD .......................................................................................... 2
1.3 UFC 500-EE X SIGNAL CONVERTER .................................................................................. 3
1.3.1 Electronics compartment....................................................................................... 3
1.3.2 Terminal compartment .......................................................................................... 3
2. ELECTRICAL CONNECTION...........................................................................................4
2.1 P OTENTIAL EQUALIZATION ................................................................................................ 4
2.2 O PERATION OF THE SIGN AL CONVERTER ........................................................................... 5
3. CONNECTING CABLES....................................................................................................5
4. CONNECTION DIAGRAM.................................................................................................6
5. SERVICE..............................................................................................................................7
5.1 R EPLACEMENT OF ELECTRONICS UNIT OR MAINS FUSE ( S ) ................................................. 7
5.1.1 Replacement of electronics unit............................................................................ 8
5.1.2 Replacement of mains fuse(s).............................................................................. 8
5.1.3 Changing power supply voltage (not for 24 V AC/DC version).......................... 11
6. SPARE PARTS .................................................................................................................11
7. MAINTENANCE ................................................................................................................11
8. EC-TYPE EXAMINATION CERTIFICATE ....................................................................12
9. DECLARATION OF CONFORMITY ..............................................................................16
10. DATA PLATE...................................................................................................................17
Be sure to follow these instructions !
IMPORTANT !
•
The prescriptions and regulations as well as the electrical data described in the EC
type examination certificate must be obeyed.
•
Beside the instructions for electrical installations in non-hazardous locations according
to the applicable national standard (equivalent of HD 384 or IEC 364, e.g. VDE 0100),
especially the regulations in EN 60079-14 "Electrical installations in hazardous
locations" or equivalent national standard (e.g. DIN VDE 0165 Part 1) must be strictly
followed.
•
Installation, establishment, utilization and maintenance are only allowed to be
executed by personnel with an education in explosion safety !