Operation, 3 access control and seals – KROHNE ALTOSONIC V12 EN User Manual
Page 35

OPERATION
6
35
ALTOSONIC V12
www.krohne.com
04/2013 - 4002643502 - MA ALTOSONIC V12 R02 en
6.3 Access control and seals
All acoustic transducers and the electronics unit of ALTOSONIC V12 can be exchanged without
the need for recalibration. The only exception is the board that holds all Custody Transfer (CT)
settings. After initial calibration of the ALTOSONIC V12 all CT settings are stored inside the
meter and a dipswitch no 4 is put in the locked position. The dipswitches are subsequently
sealed by the calibration facility, guaranteeing no un-authorised changes can be made to the
meter. Contact KROHNE in case the board with the sealed dipswitches needs to be replaced.
1 Turn cover counter clockwise and remove the cover.
2 Pull the metal grips to remove the display.
3 Remove the plastic cover with a screwdriver.
4 Locate the DIP switch number 4:
ON = free
OFF = locked.
The cover of the electronics can be sealed too (optionally).
Figure 6-3: Location of DIP switch for sealing
CAUTION!
The CT approval is no longer valid if the dipswitch number 4 is switched to ON!
Figure 6-4: Optional sealing of cover
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