Thermo Fisher Scientific Alpha COND 190 (In the process of updating the brand guideline & product image) - Manual (Page 20)

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P1.3: Set Hysteresis value
Hysteresis prevents rapid contact switching if measured value is fluctuating near
the set point. Once activated, relay will not de-activate until measured value
reaches set point plus hysteresis value.
Example: Low set point is 200.0 µS/cm and hysteresis 100.0 µS/cm, relay will
activate when value drops below 200.0 µS/cm, but will not de-activate till
measured Conductivity value rises above 300.0 µS/cm.
Default hysteresis value is 5% of full scale. The hysteresis window can be set to
any value within the range shown below:
Conductivity Range Range No., R Hysteresis Window
0.00 – 20.00 µS/cm 1 0.00 – 2.00 µS/cm
0.0 – 200.0 µS/cm 2 0.0 – 20.0 µS/cm
0.0 – 200.0 µS/cm 3 0.0 – 20.0 µS/cm
0 – 2000 µS/cm 4 0 – 200 µS/cm
0.00 – 10.00 mS/cm 5 0.00 – 1.00 mS/cm
0.00 – 20.00 mS/cm 6 0.00 – 2.00 mS/cm
0.0 – 200.0 mS/cm 7 0.0 – 20.0 mS/cm
0.0 – 200.0 mS/cm 8 0.0 – 20.0 mS/cm
1.
Key in password “022” as per procedure in Section 5.
2. The screen will scroll P1.0 and SP1. Press ENTER three times.
3. The screen will scroll P1.3, HYS1, and current hysteresis value.
4. Press ▲or ▼keys to adjust hysteresis value.
5. Press ENTER to confirm. Press ▲and ▼keys together to return to P1.0.
Press ▲and ▼keys together again, to return to Conductivity measurement
mode.