78Plumbing and Connection OptionsA.2 Connect a 2-parameter optionThe 2-parameter configuration is required for Options 4, 6, 8b, 9b,10b and 11b.When using a continuous sample the AMTAX sc can measure oneparameter: NH 4 –N. To operate a second parameter with the samecontinuous sample (i.e. phosphate measured by thePHOSPHAX sc) the sample line must be connected to the overflowvessel of the first instrument in the row. For this purpose, the firstinstrument must be modified to the 2-parameter variant.Note: The 2-parameter configuration applies to outdoor and indoor optionsand to one and two-channel options (Ch1 + Ch2).Refer to Figure 27 and following instructions to connect a2-parameter configuration.1. Remove the small blind plug (item 1, Figure 27) from the tophole on the overflow vessel. Remove the large fitting (item 2)from the bottom hole on the overflow vessel. Discard the plugand fitting.2. Slide the small fitting (union and ferrule, item 3) over the tubing(item 5). Cut the tubing flush with the ferrule.3. Install the small fitting to the top hole on the overflow vessel totake the sample to the second analyzer.4. Close the bottom hole with the large blind plug and sealingwasher (item 4).Note: Always connect the front overflow vessel for the first instrumentto the front overflow vessel for the second instrument.Figure 27 2-parameter option configuration1 Small plug 4 Large plug LZY1932 Large fitting 5 Tubing LZY1953 Small fitting and ferrule LZY111 6 To second analyzer
