CMS/User Guide - Filterteknik

• Conversely, when placed on a very clean system it can have difficultyin working out the flow due to the very low number ofparticles passing through the flow cell. This will not effect thecontamination measurement, but it is worth noting that a lowerconfidence or no indication at all on a clean sysem. If this is thecase the tick box is avaiable to allow a contamination reading.• It may be necessary that the low flow indicator is turned off iffiltration is below 10um.12.6 Continuous TestingIn the Continuous Testing area are settings which control how theCMS decides when to perform and log a test. Selecting Test Continuouslymakes the CMS automatically repeat the test, accordingto the specified Test Interval. Setting an interval longer than the testduration results in the test being repeated upon each expiry of thatinterval. For example, setting a Test Duration of 1 minute, and a TestInterval of 10 minutes, results in a 1 minute test performed every 10minutes. Setting the interval to a value less than the Test Duration(for example zero) results in a new test being started immediately atest finishes.Start Testing Automatically sets the CMS to begin a test soon afterit is powered up. This is ideal for unattended systems.Stop Testing When Clean is a feature intended for cleaning rigs or"filter trolley’’ type applications. The CMS continues testing untilthe fluid is "clean’’, at which point an alarm is signalled and testingstops.Confirm Target Level Before Stopping This helps to ensure that atest sequence is not terminated too soon, when there are still a fewSettings 33