Hach-Lange POLYMETRON 9586 - Manual (Page 35)

Table 8 Sensor DIAG/TEST menu
Option Description
MODULE INFORMATION Shows information about the sensor module.
SENSOR INFORMATION Shows the name and serial number that was entered
by the user.
CAL DAYS Shows the number of days since the last calibration.
CAL HISTORY Shows a list of all calibrations by date/time stamp. Use
the arrows keys to select a calibration and push enter
to view the details.
RESET CAL HISTORY Resets the calibration history for the sensor (requires
service-level passcode). All previous calibration data is
lost.
POLARIZATION Contacting conductivity sensors only. Shows
information about the electrode polarization, the cable
capacitance and the time before the next
measurement.
SENSOR SIGNALS Shows the current sensor signal information.
MEMBRANE DAYS Shows the number of days that the membrane has
been in operation.
RESET MEMBRANE Resets the number of days that the membrane has
been in operation and resets all calibration data to
defaults.
Warning and error conditions
Follow the steps below to acknowledge controller warnings.
1. Push the menu key and select DIAGNOSTICS.
2. Select the device (controller, sensor, network card) with the warning or error and push enter.
3. Select the warning, error or event list and push enter.
4. Select YES and push enter to acknowledge the warning.
Note: Errors cannot be acknowledged.
Warning list
A warning icon consists of an exclamation point within a triangle. Warning icons appear on the right
of the main display below the measurement value. A warning does not affect the operation of menus,
relays and outputs. To view warnings, push the menu key and select DIAGNOSTICS. Then select
the device to view any problems associated with that device. The warning icon will no longer be
displayed once the problem has been corrected or acknowledged.
A list of possible warnings is shown in
Table 9 .
Table 9 Warning list for oxygen scavenger sensors
Warning Description Resolution
O2 SCAVENGER TOO HIGH The measured value is >
10000 ppm Make sure that the oxygen
scavenger (hydrazine or
carbohydrazide) level in the process
water is within the operating limits of
the sensor. Calibrate or replace the
sensor.
O2 SCAVENGER TOO LOW The measured value is < 0 ppm Calibrate or replace the sensor.
TEMP TOO HIGH The measured temperature is >
50 °C Reduce sample temperature.
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