Ionics Instruments 2004 Page 8-2 DLM 30007-08 Rev. A
RAM cards in various sizes can be purchased from Ionics Instrument Business
Group. Table 9 identifies the cards available and their respective capacities at
continuous operation.
Table 9. Available RAM Cards and Storage Capacity
Part Number RAM Card Size Capacity (Days
of Operation)
Battery Lifetime*
(Years)
EMC 05120 512K 102.6 2
EMC 10240 1024K 205.4 1.5
EMC 20000 2048K 411.0 1
* An internal battery is used by the RAM cards to preserve the data when the card is
removed from the analyzer. Battery lifetime is extended if the RAM card is in an
operating unit. Lifetime varies with manufacturer. Some larger cards have rechargeable
batteries to save data when changing main battery.
NOTE
For instrument firmware with the DataGuard feature, enter a Maintenance-level
(or higher) password when prompted. Check with your system administrator
for an appropriate password. See the DataGuard Operation chapter for more
information regarding the DataGuard feature.
Replacing the In-line Filter
To prevent clogging, a filter is installed on the sample inlet line. The lifetime of
the filter element will depend on the level of particles in the water samples. If
monitoring the TOC of the feed water (prior to purification), the filter element
will need to be replaced more often than if monitoring the water after
purification. If the filter element clogs too frequently, contact Ionics Instruments
to receive help in the selection of larger capacity filters. As the filter is used,
the flow rate of water through the sample inlet system will decrease and can
even stop. A simple way to determine if the filter element needs to be
changed, is to periodically measure the flow rate of water out the waste line of
the sample inlet system and replace the filter element when the flow rate starts
to decrease. It is desirable to replace the filter element on a routine basis to
prevent clogging the filter. For this procedure two 3/4" wrenches will be
needed.
To replace the filter element:
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