Hach Polymetron 9500, Руководство пользователя, Страница: 27 / 50

Option Description
DISPLAY RANGE
For the 0-20 mA scale:
• Set the 20 mA value
• Set the 0 mA value
For the 4-20 mA scale:
• Set the 20 mA value
• Set the 4 mA value
Sets the values used for the selected scale (0-20 mA
or 4-20 mA)
SIGNAL AVERAGE Sets how often signals are averaged. Higher values
produce a smoother signal but increase the time it
takes for a signal to respond to a change in the
process value.
SET RESOLUTION—
X.XXX, XX.XX, XXX.X, XXXX Sets the number of decimal places used in the display.
SELECT SCALE—
4-20 mA or 0-20 mA Sets scale used for the 4-20 mA input
LOG SETUP—5 sec, 30 sec, 1 min, 2 min, 5 min,
10 min, 15 min, 30 min, 60 min Sets how often data is logged to the internal controller
memory.
RESET DEFAULTS—Push enter to reset
configuration settings or push the back key to
cancel. Resets configuration settings to the default values.
Configure a 4-20 mA output module
The NETWORK SETUP option appears in the Settings Menu only if an analog output module or
other network module such as Modbus or Profibus is installed in the controller.
Outputs for analog output modules are set at 4-20 mA. Outputs can be assigned to represent a
measured parameter such as pH, temperature, flow or calculated values.
For configuration information refer to the manual for the output module installed.
Configure the controller analog outputs
The controller analog outputs can be assigned to represent the measured parameter or secondary
measurements such as temperature and calculations.
1. Push the menu key and select Polymetron 9500 SETUP>OUTPUT SETUP.
2. Select OUTPUT 1 or OUTPUT 2.
3. Choose SELECT SOURCE and select a source from the list. Typically the source is one of the
sensors attached to the system. If an analog input card is installed, the analog input may be used
as a source.
4. From the OUTPUT SETUP menu, choose SET PARAMETER and choose an option from the list.
Parameters will vary depending on the type of sensors installed.
5. From the OUTPUT SETUP menu, select SET FUNCTION and choose a function. Further setup
options will vary depending on which function is chosen.
Option Description
LINEAR CONTROL Signal is linearly dependent on the process value.
PID CONTROL Signal works as a PID (Proportional, Integral, Derivative) controller.
LOGARITHMIC Signal is represented logarithmically within the process variable range.
BILINEAR Signal is represented as two linear segments within the process variable range.
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