Hach-Lange POLYMETRON 9523 User Manual - Manual (Page 36)

Table 6 Sensor DIAG/TEST menu (continued)
Option Description
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.
FACTORY CAL Reserved for service technicians only.
DIAG MEAS Shows diagnostic information about the current
measurement.
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 7 .
Table 7 Warning list for conductivity sensors
Warning Description Resolution
MEAS TOO HIGH The measured value is > 2 S/cm,
1,000,000 ppm, 200% or 20,000 ppt Make sure that the display format is
set for the correct measurement
range
MEAS TOO LOW The measured value is < 0 μS/cm,
0 ppm, 0% or 0 ppt Make sure that the sensor is
configured for the correct cell
constant.
ZERO TOO HIGH The zero calibration value is too
high Make sure that the sensor is held in
air during zero calibration and is not
located near radio frequency or
electromagnetic interference. Make
sure that the cable is shielded by
metal conduit.
ZERO TOO LOW The zero calibration value is too low
TEMP TOO HIGH The measured temperature is >
200 °C Make sure that the sensor is
configured for the correct
temperature element.
TEMP TOO LOW The measured temperature is <
-20 °C
CAL OVERDUE The Cal Reminder time has expired Calibrate the sensor.
NOT CALIBRATED The sensor has not been calibrated Calibrate the sensor.
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