Hach BioTector B7000i - 8.1.1.2 Flow Test

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8.1.1.2 Flow Test
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This menu enables the user to simulate various Flow Tests through the system. The menu also shows the
current status of the Mass Flow Controller. Any settings made by the user in this menu are automatically reset
when the user exits this menu.
1. Exhaust Test. Use this function to simulate the flow through the Exhaust Valve. When the Exhaust Test
is activated, an “*” will be shown, and a small menu will display the following data:
Time: The time for the flow test is 30 seconds. This time shows the time left to the end of
the test.
MFC Setpoint: This is the BioTector mass flow controller flow setting (80 l/hr by default) for the flow
test.
MFC Flow: This is the actual flow from the mass flow controller. If there is no blockage in the
lines, then the setpoint should match the flow.
Status: At the end of the test, the status below is shown:
TESTING: Test in progress.
PASS: The Exhaust Test finished its cycle with a flow above the Pass (Flow
Warning) level (72 l/hr by default). See Section 8.3.4.6
Pressure/Flow Test Program for details.
WARNING: The Exhaust Test finished its cycle with a flow below the Pass level
(less than 72 l/hr), but above the Fail level (greater than 40 l/hr).
FAIL: The Exhaust Test finished its cycle with a flow below the Fail level
(40 l/hr by default).
2. Exhaust Flow. This is similar to the Exhaust Test menu, but its time has been extended to 999s, allowing
the user to locate any blockage in the system. Pass, Warning and Fail are automatically shown on the
screen, depending on the status of the test.
3. Sample Out Test. This is similar to the Exhaust Test. This function allows the user to test the flow
through the Sample Out Valve.
4. Sample Out Flow. This is similar to the Exhaust Flow. This function allows the user to test the flow
through the Sample Out Valve.