Hach-Lange POLYMETRON 9500 Conductivity Module User Manual - Manual (Page 18)

3. Select CAL OPTIONS and push enter.
4. Use the arrow keys to select an option and push enter.
Option Description
CAL REMINDER Sets a reminder for the next calibration in days, months or years—select the required
delay from the list.
OP ID ON CAL Includes an operator ID with calibration data—YES or NO (default). The ID is entered
during the calibration.
Troubleshooting
Intermittent data
During calibration, data is not sent to the datalog which will result in the datalog having areas where
the data is intermittent.
Test the contacting conductivity sensor
Figure 1 Sensor connector
1 Electrodes 2 Pt100
1. Disconnect the sensor from the module.
2. Electrodes: Check the insulation between the two electrodes. There should be an infinite
resistance when the sensor is dry and exposed to air.
3. Pt100: Compare the resistance measured directly on the connector with the values below:
Temperature (°C) Resistance (Ω)
0 100.00
10 103.90
20 107.70
30 111.67
40 115.54
50 119.40
60 123.24
70 127.07
80 130.89
90 134.70
100 138.50
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