Hach Polymetron 9611sc PO43– LR Operaciones página 14

4. Select SET FUNCTION>PID CONTROL and then select the
applicable options in the ACTIVATION menu.
Option Description
SET MODE AUTO—the signal is automatically controlled by the
algorithm when the analyzer uses proportional, integral
and derivative inputs.
MANUAL—the signal is controlled by the user. To change
the signal manually, change the % value in MANUAL
OUTPUT.
PHASE Selects the signal result when process changes occur.
DIRECT—signal increases as the process increases.
REVERSE—signal increases as the process decreases.
SET SETPOINT Sets the value for a control point in the process.
PROP BAND Sets the value for the difference between the measured
signal and the necessary setpoint.
INTEGRAL Sets the period of time from the reagent injection point to
the contact with the measuring device.
DERIVATIVE Sets a value that adjusts for vacillation of the process. The
majority of applications can be controlled without the use
of the derivative setting.
TRANSIT TIME Sets the value to stop the PID control for a selected period
of time when the sample moves from the control pump to
the measurement sensor.
5. Select SET FUNCTION>LOGARITHMIC and then select the
applicable options in the ACTIVATION menu.
Option Description
SET 50% VALUE Sets the value corresponding to 50% of the process
variable range.
SET HIGH VALUE Sets the high endpoint (upper value) of the process
variable range.
14 English
6. Select SET FUNCTION>BILINEAR and then select the applicable
options in the ACTIVATION menu.
Option Description
SET LOW VALUE Sets the low endpoint of the process variable
range.
SET HIGH VALUE Sets the high endpoint (upper value) of the
process variable range.
SET KNEE POINT Sets the value at which the process variable
VALUE range divides into another linear segment.
SET KNEE POINT Sets the value of the current at the knee point
CURRENT value.
Relay setup
1. Select SETUP SYSTEM>SETUP OUTPUTS>RELAY SETUP.
2. Select the relay.
3. Select an option.
Option Description
ACTIVATION The menu list items change with the selected function.
Refer to Relay activation options
information.
SELECT Selects the output. Options: None (if the relay is not
SOURCE configured), the analyzer name or calculation (if a
calculation formula has been configured). Refer to
up the calculation
SET FUNCTION Selects a function. ALARM—The relay starts when the
upper or lower alarm value is triggered. FEEDER
CONTROL—The relay shows if a process value is larger
or falls below a setpoint. EVENT CONTROL—The relay
toggles if a process value reaches an upper or lower
limit. SCHEDULER—The relay switches at certain times
independently of any process value. WARNING—The
relay shows warning and error conditions in probes.
on page 15 for more
Set
on page 12.