Hach-Lange POLYMETRON 9523 User Manual - Manual (Page 30)

Option Description
CONFIG TDS TDS only—changes the factor that is used to convert conductivity to TDS: NaCl
(0.49 ppm/µS) or CUSTOM (enter factor between 0.01 and 99.99 ppm/µS).
CABLE PARAM Sets the sensor cable parameters to improve measurement accuracy when the sensor
cable is extended or shortened from the standard 5 m. Enter the cable length,
resistance and capacitance.
TEMP ELEMENT Sets the temperature element to PT100 or PT1000 for automatic temperature
compensation. If no element is used, the type can be set to MANUAL and a value for
temperature compensation can be entered.
FILTER Sets a time constant to increase signal stability. The time constant calculates the
average value during a specified time—0 (no effect) to 60 seconds (average of signal
value for 60 seconds). The filter increases the time for the sensor signal to respond to
actual changes in the process.
LOG SETUP Sets the time interval for data storage in the data log—5, 30 seconds, 1, 2, 5, 10,
15 (default), 30, 60 minutes.
RESET DEFAULTS Sets the configuration menu to the default settings. All sensor information is lost.
Resin option
Use the RESIN option to view and change the parameters related to the resin cartridge. These
parameters must be defined before the analyzer is used for the first time.
1. Push the menu key and select TEST/MAINT>RESIN.
2. To monitor the status of the resin select the TRACK option and push enter.
Option Description
YES Monitor the resin status. When the life expectancy of the resin is less than 10 days a warning
message is triggered. When the life expectancy reaches 0 days a system error is triggered.
NO The resin is not monitored.
3. To view the current status of the resin select the STATUS option and push enter. The date the
resin was last changed and the current life expectancy are displayed. Push back to return to the
menu or enter to reset the parameters.
4. To reset the resin parameters select PARAMETERS and push enter. Based on the values input,
the life expectancy of the resin is recalculated.
Option Description
CAPACITY Use the arrow keys to enter the resin exchange capacity (0.5 to 5.0 mole/liter).
VOLUME Use the arrow keys to enter the volume of resin (0.5 to 20 liters).
FLOW Use the arrow keys to enter the sample flow rate through the cartridge (2 to
20 liters/hour).
CONCENTRATION Use the arrow keys to enter the resin concentration (0 to 20 ppm).
Calibration
About sensor calibration
The sensor characteristics slowly shift over time and cause the sensor to lose accuracy. The sensor
must be calibrated regularly to maintain accuracy. The calibration frequency varies with the
application and is best determined by experience.
Use air (zero calibration) and the process sample to define the calibration curve. When the process
sample is used, the reference value must be determined with a secondary verification instrument.
Cell constant
Before making a calibration make sure the sensor cell parameters are correct.
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