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Elster NV/SA
Rijkmakerlaan 9
2910 Essen,
Belgium
T + 32 3 670 0700
www.elster-instromet.com
DOCUMENT TITLE
ULTRASONIC FLOWMETER SERIES 6, MODELS Q.SONIC
PLUS
SUBTITLE
QUICK START MANUAL
DOCUMENT NUMBER
22.100.200.000.02/2
REVISION
B
REVISION DATE
2013-02-22
This reproduction is sole property of Elster NV/SA and is subject to the conditions that it or any information contained therein will not be used in any way
detrimental to our interests and that all copies will be returned immediately on demand
PAGE
15 OF 29
22.100.200.000.02_2_B ULTRASONIC FLOWMETER SERIES 6.DOC
4.7
Sealing
This chapter describes the important sealing locations. This chapter describes the sealings
as required by MID certificate T10335 (see also chapter 9). Even if MID is not required it is
advised to seal the UFM.
4.7.1.
Main plate
Figure 13 shows how the main plate is sealed to the flow cell.
Figure 13: sealing main plate
4.7.2.
SPU
The SPU in the main compartment of the flameproof certified box is sealed on 2 locations.
•
By means of the PCB sealing bracket the SPU electronics is sealed to the flameproof
certified Box, see Figure 14.
Figure 14: Example PCB sealing bracket
•
The meter should be protected from undesired changes in the software. Therefore a
hardware switch is placed on the main board. This hardware switch can be reached
through a hole in the back panel. The hole in the back panel is protected with a
transparent cap (see Figure 15).