Memory Card; Calibration; Calibration And Repeatability Check - Deckma Hamburg OMD-2008 Instruction Manual

13.1 Memory Card

The Memory Card is on the backside of the Display PCB inside the computer
housing. It is suitable for the life of the instrument, as it is calculated according
MEPC 107(49) to the required storage time of at least 18 month. When the card
is completely used, the oldest entry will be overwritten, so that a replacement is
not necessary. Under normal use the card should not be taken out, as this is
linked with the specific system. The card can be read in other OMD-2008 units,
but writing is only possible in the related system.
1: Display PCB 2: Memory Card
Fig. 6
If no Memory Card is mounted or a card from another system is mounted, the
unit will be in alarm condition.

14 Calibration

15 ppm Bilge Alarms built according MEPC.107(49) have to be protected against
access beyond the checks of instrument drift, repeatability of the instrument
reading and zero adjustment. For this reason the instrument is electronically
sealed, so that only the manufacturer or his authorized persons, equipped with
the related tools, are able to get access for changing the calibration.
To provide a simple procedure to check the instrument aboard ship, the OMD-
2008 EV-FC is constructed in that way, that the zero check also confirms the
instrument drift within the specifications.

14.1 Calibration and repeatability check

a) Switch off the power supply and stop any water flow.
Issue: 25.09.2015 preliminaryInstruction Manual OMD-2008 (All Versions)
DECKMA HAMBURG GmbH
Page 37 of 28