Stream Screens; Loss Of Flow - Hach 1950Plus Instrument Manual

5.2.11.2 Retention Time Screen
5.2.11.3 Alkalinity Screen

5.2.12 Stream Screens

5.2.13 Loss of Flow

UVTOCSetup and System Configuration.fm
This is selectable in hours and minutes from 00:00 to 99:59.
R et en t io n t im e
*12:30*
The Retention Time screen is used to reference the TOC Stream 1 history to
calculate the Removal %. It may be changed at any time, however it will only
provide an updated REM % when stream 2 is online.
This is a user-entered number between 0 and 200 mg/L used to
calculate the pass/fail criteria in compliance with the EPA regulation
(see Table 1 on page 22).
A lk al i ni ty
* 65 m g/ l*
The number of analysis streams may be selected as Single or Dual.
S tr ea m
* Si n gl e *
S tr ea m
* D u al *
If a loss of flow occurs, the analyzer will switch to the alternate stream, go
offline until flow is established, and then purge. Following the purge on this
alternate stream, it will go online. If this alternate stream does not recover
flow, it will switch back to the prior stream. This cycle will continue to occur
until either flow is established. A more detailed explanation of flow failure
event is given in Section 8.6.3 on page
Section 5
139.
Page 87
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