Hach NA5600 sc Na+, Руководство по эксплуатации

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Figure 5 Alarm function
1 High alarm 4 Low alarm 7 Time (x-axis)
2 High deadband 5 ON delay 8 Source (y-axis)
3 Low deadband 6 OFF delay
• FEEDER CONTROL function (refer to Figure 6 and Figure 7 )
Option Description
PHASE HIGH —Sets the relay to on when the measured value is more than the setpoint value.
LOW —Sets the relay to on when the measured value is less than the setpoint value.
SET SETPOINT Sets a measurement value as the setpoint value.
DEADBAND Sets the deadband value for the relay. If PHASE is set to LOW, the relay stays on until
the measurement value increases to more than the setpoint value plus the deadband
value. If PHASE is set to HIGH, the relay stays on until the measurement value
decreases to less than the setpoint value minus the deadband value.
OVERFEED TIMER Sets a time limit for how long the relay can stay on. Once an overfeed alarm is present,
it must be manually reset. Refer to
Reset the overfeed timer for relays on page 21.
OFF DELAY Sets a delay time before the relay is set to off.
ON DELAY Sets a delay time before the relay is set to on.
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